Ergebnisse (178)

Sortierung:

Alle Alles auswählen

Seite 1

ELIV 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2357 2019

Treffer in den folgenden Teilen:

A. Weichslgartner Embedded Intrusion Detection based on AI – A Data-Driven Approach S. 469-478

„… normal and feature vectors which do not adhere to it are detected as anomalies and need further …” „… Embedded Intrusion Detection based on AI A Data-Driven Approach Dr.-Ing. Andreas …” „… how Artificial Intelligence (AI) and a data-driven approach can enable an adaptive intrusion detection …”

M. Giertzsch Data Structures and Interfaces for High-resolution Maps in Rapid Prototyping Applications of Highly Automated Driving S. 319-332

„… 12 … : Using the normal vector of the reference curve in the origin point, the lane center …” „… co-ordinate systems are right-handed and orthonormal. Note: In this chapter, , , , , , denote unit vectors …” „… co-ordinates can be computed from the origin point , ∈ and the distance vector by vector addition …”

R. Grave Use of open source software in automotive safety projects – A decision tree for the usage of open source software components in safety projects S. 269-274

„… Hypervisors in the spatial domain and execution monitoring in the temporal domain. This approach was for …” „… in the separation scenario is the approach to argument that the OSS component itself is …” „… integrated along with safety software elements without separation. A reason for this approach might be …”

M. Brunner, H. Adlkofer Hardware matters: how one chip can impact the security of a connected vehicle S. 455-468

„… attacks. Based on the importance of a holistic approach we depict the pillars of automotive security and …” „… need for a holistic security approach Connected and autonomous vehicles (CAV) are based on a …” „… of the art that is evolving quickly. Thus, a holistic security approach becomes paramount to …”

doi.org/10.51202/9783181023570

Teilzugriff

Markieren für den Zitationsdownload

International Conference on Gears 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2422 2023

Treffer in den folgenden Teilen:

C. Kirchhoff, P. Tenberge Optimization of the vibrational behavior of ZI crossed helical gears with a plastic wheel and a steel worm S. 1419-1434

„… equation in the HESSE normal form is needed. Equation (5) shows this plane form in vector form. The vector …” „… 𝑛 is the normalized normal vector of the plane and the vector 𝑃 is the contains the coordinates …” „… ) via the scalar product of the support vector and the normalized normal vector. The advantage of this …”

L.-C. Chang, Q. Y. Zhuang, S.-J. Tsai, J.-F. Hochrein, S. Landler, M. Otto, K. Stahl Comparing the contact characteristics of involute gear/ eccentric cycloidal gear calculated by various loaded tooth contact analysis models S. 397-412

„… meshing analysis model for EC gear pairs includes profile equations and normal vectors which are derived …” „… MG ,R/Lcos sin 0 0sin cos 0 00 0 11 0 0 0 1 1iiix xy yz s zC (7) The normal vector of tooth surface …” „… points CG of the gear along the contact curve. The tangent vectors tG are derived from the normal vectors …”

L. Becker, P. Tenberge Crossed helical gears – simulative studies and experimental results on non-involute geometries S. 1499-1514

„… direction of the normal vector on the tooth flank at point S. Two tangent vectors are required to calculate …” „… the normal vector TN. The first vector TV1 is tangential to the flank in the transverse section of the …” „… normalized normal vector TNE at the point S together with S and the radius of the sphere leads to the …”

C. Karampatzakis, A. Mihailidis, A. Mantzaflaris, C. Provatidis Contact simulation of tooth flanks using Isogeometric Analysis S. 413-428

„… characteristic of B-Splines is the continuity between adjacent elements. Further-more, the smooth normal vector …” „… , regardless of polynomial degree, and thus the surface's normal and tan-gent vectors are ambiguous in that …” „… greater than , the normal and tangent vector fields are well defined and are smooth on all points of a …”

E. Grabovic, A. Artoni, M. Gabiccini, E. Ciulli Exploration of trade-offs between NVH and efficiency in bevel gear design S. 853-880

„… normal vector of surface 1 at the contact point, while and are the spatial angular velocities (with …” „… contact points , tangential vectors , , and normals (j = 1, 2) required in eq. (16) can be obtained at …” „… );  , and , are the generic position and normal vectors of the family of the tool surfaces during motion …”

M. Vivet, A. Rezayat, J. Verhoogen, K. Kucukcoskun, S. Donders Numerical analysis of bevel gear transmission acoustic emission using a 3D gear contact force model within a multibody system dynamics simulation environment S. 689-702

„… vector of the contact locations and the contact normal vector . At each time step of the dynamic …” „… and presented for three spiral bevel gear variants; two that have a normal gear blank design and one …” „… transmission error and the contact pattern’s size and location. Approaches for acoustically optimized bevel …”

S. Landler, M. Trübswetter, M. Otto, K. Stahl Parameter Based Definition of Eccentric Cycloid Gearings S. 1207-1228

„… by vector addition with the vector OAPC which is normal to the trochoid and points in the direction …” „… x-component, yPC the y-component of the vector pPC. The contact angle describes the rotation of the normal …” „… angle of the normal vector on the flanks in relation to the common tangent of the pitch circles, see Fig …”

J. Gründer, A. Monz Analytical Method for Calculating the Nominal Tooth Root Stress in Worm Gear Shafts S. 1091-1110

„… its components Fx, Fy and Fz by calculating the direction of the normal vector in each point along the …” „… obtaining the direction of the normal vector nP,i at PF,i on the surface of the flank. The force vector …” „… approach for calculating bending, compression, and shear stresses in the tooth root of worm shafts to close …”

D. Matsuura, D. Hashioka, T. Kobayashi, H. Maki Generation Method of Polygonal Shaped Work Pieces Based on Gear Meshing Theory S. 1631-1640

„… degrees to satisfy a condition between a relative sliding velocity, v21, and a surface normal vector, n …” „… well-known mathematical approach of gear meshing analysis can therefore be applied to calculate a conjugate …” „… cutting velocity along the tooth line occurs due to the existence of a stagger angle [3]. The vectors #1 …”

D. Gallagher, E. Wiita, R. Weidig Improved Method for Validation of Root Stress in Polymer Gears S. 1333-1350

„… Improved Method for Validation of Root Stress in Polymer Gears introducing a hybrid approach to …” „… moulded polymer gears. VDI-Berichte Nr. 2422, 202313344. Building the Case for a Hybrid Standards Approach …” „… appropriate tooth temperature Fuß using VDI 2736-2:2014? This “best case” hybrid approach, picking the most …”

T. Tra My Truong, S. Schumann, B. Schlecht On the Testing of Flank Fracture Calculations Based on 3D-Gears S. 243-256

„… . Dif-ferent approaches are tested and compared to estimate the load-bearing capacity with regard to flank …” „… of methods can be used to determine the normal and shear stress amplitudes 𝜎 , as well as the …” „… normal and shear mean stresses 𝜎 and 𝑚, e.g. minimum circumscribing circle (MCC), maximum rectangular …”

G. Vasileiou, C. Vakouftsis, C. Kalligeros, V. Spitas, C. Papalexis, A. Tsolakis, P. Zalimidis Continuous prestressed reinforcement of plastic gear teeth and its effect on bending strength vs conventional reinforcement S. 1375-1388

„… approach to enhance the strength of plastic gears involves the use of polymer materials reinforced with …” „… properties of plastic gear teeth through fiber reinforcement. One common approach involves the implementation …” „… the majority of the normal load. This efficiency is further enhanced when the fibres are placed in the …”

D. Park, A. Rezayat, Y. Gwon Design optimization of multi-stage gear trains with asymmetric teeth under a broad range of torques by incorporating multibody simulations S. 383-396

„… et.al. [2] presented a process to reach the best designs by using a multi-variable approach considering …” „… simulation in this study, a set of approaches proposed by Jordi et. al. [8] are newly implemented together …” „… and load vector applied on the HPSTC (highest point of single tooth contact) is calculated. Afterwards …”

F. Mieth, D. Tazir Local load capacity analysis for the design of a balanced flank modification for cylindrical gears according to bevel gear procedures S. 927-944

„… ). For this purpose, the nominal tangential load Ft on the reference diameter is converted to the normal …” „… the tooth normal force Fn of the length of the contact line lbm and the radius of the relative …” „… . 𝜎𝐹∙∙ ∙ ∙ ∙ (0-2)The nominal normal force Fn of the virtual cylindrical gear (0-3) is calculated from …”

B. Guilbert, D. Dureisseix, P. Velex Hybrid models for the simulation of displacements and stresses in lightweight gears S. 315-328

„… thin-rimmed/-webbed gears, this approach is no longer valid and more refined models are needed. This limitation is …” „… approach and make it possible to clarify some of the characteristics of vibrations in gears with highly …” „… ijk determined from the results of Weber and Banaschek [29] and an equivalent normal deviation ijM …”

T. Schmid-Schirling, N. Saum, C. Eberz de Oliveira Löhrer Marker-Free, Single Item Traceability in Gear Wheel Production Based on Inherent Surface Patterns S. 1877-XXIX

„… to use inherent features instead of markings. Many approaches have been proposed, but only few have …” „… become relevant [2]. The most promising approach for a technological implementation in production …” „… without surface microstructure or volume scattering semi-transparent objects. Additionally, the approach …”

S. Sepp, A. Wenig, M. Otto, K. Stahl Acoustical behavior of periodic flank modifications under dynamic operating conditions S. 341-356

„… design approach uses static assumptions, whereas operating conditions include dynamic operation. The …” „… ∙ 𝑥 ∙ 𝑥 ∙ 𝑥 𝑓 (1) where is the mass matrix 𝑥 is the acceleration vector is the damping matrix 𝑥 …” „… is the velocity vector is the stiffness matrix 𝑥 is the displacement vector 𝑓 is the external force …”

L. Bonaiti, M. Monti, C. Gorla, M. Geitner, T. Tobie, K. Stahl The consequences of different methodologies for the elaboration of pulsator test results with respect to the load spectrum assessment of gears S. 33-52

„… been mainly defined by the authors. The first approach generally follows the determination of the …” „… approach, several curves can be adopted to describe experimental pulsator data. The aforementioned curves …” „… curve cannot be exactly the same. Among all methodologies, this article focuses on the approach …”

K. Lübke, K. Stein Quality inspection of special geometries measured with computed tomography – Evaluation of involute cylindrical gears according to ISO 1328-1 S. 1787-1802

„… small spur gear large spur gear number of teeth 12 43 normal module in mm 0,6 0,4 pressure angle in …” „… determined tactile on the steel pin by measuring a cylinder. This is a stable approach and allows clamping on …” „… pin. With normal modules of the gears of mn12=0,6 mm and mn43=0,4 mm it is possible to probe the …”

A. Wedmann, M. Stein, K. Kniel Large gear metrology at PTB S. 1803-1820

„… = 250 mm Helix angle β in ° 0 10 r 20 l 0 10 l 20 r Normal module mn in mm 25 25 25 18 18 18 Number of …” „… teeth z 38 37 36 14 13 13 Normal pressure angle n in ° 20 20 20 20 20 20 Profile shift coefficient x 0.0 …” „… Normal module mn in mm 18 18 18 18 18 18 Number of teeth z 107 105 101 -95 -93 -89 Normal pressure angle …”

doi.org/10.51202/9783181024225

Kein Zugriff

Markieren für den Zitationsdownload

International Conference on Gears 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2355 2019

Treffer in den folgenden Teilen:

T. Pinel, J. Bruyere, P.Velex, L. Billet Parametric Study of a 3D trochoidal reducer model with involute profile S. 437-448

„… point of contact , is defined a normal deflection ∆ equivalent to the normal approach with respect to …” „… , 2019440 ∆ . . where is the normal contact vector for the ith tooth pair and jth cell of contact. A …” „… structural vector is defined according to the contact geometry (positions vectors and normal vectors …”

M. Chapron, Q. Theurillat-Bonjour Tooth contact analysis of non-circular gears with non-involute tooth profiles: Application to horological spur gears S. 925-936

„… , and the associated outward normal vectors are considered constant and lying in this base plane. In the …” „… contact point M at the center of the chord segment, (ii) the normal vector n considered positive in the …” „… tooth deflection ( ) can be seen as the rigid body approach of the two parts in the normal direction …”

L. Ryali, D. Talbot A gear load distribution model for planetary gear set with a flexible carrier S. 809-822

„… ( ) and rigid approach vector ( ) along the contact normal, to establish whether the contact is closed …” „… contact normal direction using a transformation matrix , to compute the rigid approach vector …” „… at each of these points, by considering the initial separation vector ( ), elastic approach vector …”

Y. Zhao, Q. Meng, Z. Yang Curvature interference characteristic of conical worm gear S. 607-618

„… surface, g , and its normal vector, a n , in a as follows a a a a aa , sin cos sin sin cosg …” „… ). The equation for the abrasive wheel generating surface S g , ( 1,2S ) and its normal vector can …” „… Eqs. (5-6), the vector equations for the abrasive wheel generating surface S g and its normal …”

K. Matsuo, Y. Suzuki, I. Moriwaki Simulation of tooth flank profile in the gear honing process S. 1707-1724

„… shown below. V , , ∙ ∙ tan , ∙ ∙ sin tan , 0 The normal vector N of P1 is …” „… , , ∙ ∙ , ∙ ∙ , ∙ ∙ The unit normal vector n of P1 is calculated as follows: n …” „… function of the honing wheel, r2 is the radius of P2, V is the velocity vector of P2, N is the normal …”

D. Mevissen, C. Lopenhaus, T. Bergs Calculation of mixed friction conditions in large-scale rolling-sliding contacts for different surface structures S. 555-568

„… approach, the results are validated by friction measurements in a disk-on-disk test rig. With the novel …” „… procedure is based on submodels. In existing calculation approaches, the results of each submodel on the …” „… pressure distribution and thus, on the performance of tribological systems. The calculation approach bases …”

F. Eigner, R. Michel, M. Berger Analysis on the efficiency of HypoGear S. 127-136

„… contains the position of the point (X, Y, Z), the direction of the normal vector (X, Y, Z) and other …” „… force polygon over the position of the axes as well as the normal vector of the point P considered …” „… vector field of the sliding velocity. Based on a starting point, the integration along the flow …”

C. Gosselin, E. Fritz, L. Seiler Design and CnC manufacturing of face milled beveloid gears S. 379-390

„… pitch pb separates consecutive profiles a1 and a2 along the normal vector to the profile, while …” „… between the surfaces are along the normal vector to the tooth surface at the considered point. It is …” „… approach is that it allows practical production of cylindrical / Beveloid gears on 5Axis CnC machines …”

K. Liu, H. Liu, W. Shi Investigation on dynamic behavior of differential gearing with herringbone teeth S. 1215-1222

„… ] analyzed the approach of coupling the left and right ends of helical gears into the double helical gear …” „… instantaneous total normal contact line on teeth derived by Maatar, M. [1], the time-varying meshing stiffness …” „… , whose value can be calculated with ISO6336. The ( )L is the length of instantaneous total normal …”

X. Tian, Y. Wu, J. Han, L. Xia Online estimate and compensation of the gear machining error based on electronic gearbox cross-coupling controller S. 1835-XXVIII

„… control (CCC) method which was on the basis of a contour error vector using parametric curve interpolator …” „… , nm , and are the tooth number of the workpiece, thread number of the cutter, normal module …” „… is the normal distance between the two designed tooth profiles that contain the actual external tooth …”

M. Solf, C. Lopenhaus, T. Bergs Influence of elastic effects on the grinding force in plunging bevel gear grinding S. 1687-1696

„… simplified plunging process is commonly used, in which the tool is moved along a straight feed vector [2 …” „… grinding process was carried out in a plunging process with vector feed and eccentric movement. For the …” „… and the normal force Fn are approximately linearly proportional to the spindle power P and thus to …”

C. Chevrel-Fraux, R. Fargere, J. Bruyere, P. Velex Modelling of high power geared transmissions, introduction of a filling material S. 903-914

„… difference between the normal approach δ(Mij) and the initial gap δ0(Mij) for any potential contact point …” „… M M M 1 1 2 2u n u n (1) Fig. 3 : Base plane The normal approach needs to be …” „… O1, the vectors n1 and n2 are the normal to contact, the term u2(Mij) correspond to the …”

F. Rudolph, S. Schumann, B. Schlecht Consideration of solid particles in a gear lapping simulation S. 1675-1686

„… (2). The flank geometry is then modified by the calculated wear depth along the normal vectors of …” „… efficient tooth contact analysis and a VDI-Berichte Nr. 2355, 2019 1675 widely used wear approach, such a …” „… plane. The application of a normal load and sliding motion to the contacting bodies leads to the …”

M. Pillarz, A. von Freyberg, A. Fischer Multisensory measurement of the base circle radius as a fundamental shape parameter of large gears S. 1207-1214

„… to the fixed measuring volume. As solution, a multisensory approach with scalable measurement volume …” „… than 5 µm, which verifies the scalability of the sensor system. To validate the multisensory approach …” „… proposed multisensory approach for precise gear inspections. 1. Introduction Large gears (d > 1 m …”

M. Ruzek, F. Ville, P. Velex, Y. Marchesse Windage power loss reductions in high-speed gear pairs S. 91-100

„… single pinion and a gear pair. 2. Experimental approach The experimental test rig dedicated to the …” „… tooth tip. 3. Numerical approach Simulations based on the Reynolds Averaged Navier Stokes (RANS …” „… surfaces at the limits of the external computational domain. The normal velocity component at the planes …”

P. Scholzen, C. Lopenhaus, C. Brecher, D. Billenstein, F. Rieg, G. Hammerl Investigation of the influence of elastic gear body structures on the operational behavior of gears S. 785-796

„… and Approach The design of the gear body (GB) has a decisive influence on the meshing stiffness of …” „… [3]. In this application, a so-called bonded contact is required, which is why the contact normal …” „… vector ni(M) becomes 1 in the shown equation system. The diagonal element 1/βgL of the extended …”

doi.org/10.51202/9783181023556

Teilzugriff

Markieren für den Zitationsdownload

International Conference on Gears 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2389 2022

Treffer in den folgenden Teilen:

C. Gosselin, B. Leitz Tooth deburring and chamfering: a general approach for 5axis CnC manufacturing S. 1383-1394

„… tip edge: ?: the local tangent vector, ?: the local normal vector, ??: ? ? ?, the pivot vector, ????⃗ …” „… along the tooth edge: ?: the local tangent vector, ?: the local normal vector, ??: ? ? ?, ????⃗?: the …” „… ) are required to orient the CT along the tooth edge: ?: the local tangent vector, ?: the local normal …”

F. Mieth, C. Ulrich, B. Schlecht Stress calculation on bevel gears with FEM influence vectors S. 585-596

„… in normal direction, influence vectors can be oriented arbitrarily.Fig. 5: Comparison of influence …” „… i of the flanks (in normal direction) approaching around . In [4] the calculation of the deformation …” „… Stress calculation on bevel gears with FEM influence vectors Loaded tooth contact analysis with …”

L. Becker, D. Vill, P. Tenberge Optimized crossed helical gearboxes using non-involute transverse sections S. 1197-1208

„… . To describe the generating profile completely, tangent and normal vectors must be determined. These …” „… investigate them regarding their properties in gear meshing. For this purpose, a general approach was chosen …” „… special case. He extended the approach, so changes in the axis distance and in the axis crossing angle of …”

F. Eigner, S. Heinrich, M. Berger An approach on contact analysis for micro geometry optimization of the gear unit HypoGear S. 943-950

„… normal VDI-Berichte Nr. 2389, 2022 943vector (X, Y, Z) and other information, e.g. the number of the row …” „… An approach on contact analysis for micro geometry optimization of the gear unit HypoGear Florian …” „… are set in rotation, in order to create a vector field of the sliding velocity. Based on a starting …”

F. Muller, S. Schumann, B. Schlecht Innovative tooth contact analysis with non-uniform rational b-spline surfaces S. 171-184

„… is necessary to determine the co-ordinates, normals and curvatures for each of these points. In …” „… ) can be insufficiently represented with this approach. Thus, surface deviations can have a direct …” „… the flank and root geometry. For this purpose, both the Bézier and NURBS approach are compared Fig. 1 …”

L.-C. Chang, S.-J. Tsai, C.-H. Huang Contact characteristics of cycloid planetary gear drives considering backlashes and clearances S. 215-226

„… pin-shaft is effective for transmission if the inner product of the position vector uOCAOC and the normal …” „… Bearing. Force FBOi for outer race-roller pair projected along the normal vector nBI,iof the inner race …” „… presence of bearing clearance. A computerized loaded tooth contact analysis (LTCA) approach based on …”

L. Ryali, D. Talbot Dynamic load distribution of planetary gear sets subject to both internal and external excitations S. 389-408

„… separation vector (? ), elastic approach vector (? ), and rigid approach vector (? ) are determined can be …” „… vector ( errε ) along the contact normal direction is introduced in Eqn. 8, to incorporate the effects of …” „… the literature employ a lumped parameter approach, which is not very effective for root cause analysis …”

J. Hochrein, M. Trubswetter, M. Otto, K. Stahl Direct flank geometry calculation for face gears S. 1447-1460

„… triangulated surface). The puncture VDI-Berichte Nr. 2389, 2022 1453of the normal vector ? from the point …” „… cutter typically generates the face gear. Several geometry generation approaches exist. These approaches …” „… operations are needed due to the implicitness of the governing equations in the analytical approaches, but …”

J. J. Zhang, Prof. Y. M. Hu, X. X Luan, Z. S. Zhang Research on the effectiveness of roelands formula with constant VPC in EHL of higher pair contact S. 119-132

„… Volume force vector of the fluid and solid (N/m3) Velocity strain tensor (1/s), ( ) / 2TV V Fr Froude …” „… higher Pair. 1 modeling approach As shown in Fig. 1, the physical model of EHL point contact consists of …” „… through the ball center O and normal to X-Z plane. The velocity of the ball is u1=ωR, with R the ball …”

W. Wagner, S. Schumann, B. Schlecht Enhanced loaded tooth contact analysis of hypoid gears within a multi-body-system simulation S. 357-370

„… removed from the penetration vector. For a negative force the resulting matrices are shown exemplary …” „… respect to each other at the contact point is used. Normally, the normals of the two flanks lie in the …” „… meshing plane. Thus, the angle between the normals of the flanks can be used to determine the penetration …”

B. Legrady, M. Taesch, G. Tschirschnitz, C. F. Mieth Prediction of churning losses in an industrial gear box with spiral bevel gears using the smoothed particle hydrodynamic method S. 651-664

„… . and normal vector as , (4) . The specific torque generated around the …” „… conditions in gearboxes. In conservative approaches, this requirement is fulfilled by an oil oversupply that …” „… experiments [13]. The investigations of the last decades are based on traditional CFD approaches that utilize …”

doi.org/10.51202/9783181023891

Kein Zugriff

Markieren für den Zitationsdownload

Detection of Moving Objects for Aerial Surveillance of Arbitrary Terrain

Marco Munderloh

Reihe: Informatik/ Kommunikation

Band 847 2016

Treffer in den folgenden Teilen:

Multi-Planar Landscape Model based on Triangle Meshes S. 58-72

„… ) · n̄ = 0. (4.19) The mesh node M0 is assumed to be the position vector whereas n̄ is a normal vector …” „… the mesh to cover the full frame. In this work, the later approach was chosen by extrapolating eight …” „… additional displacement vectors at the frame boundary: four at each corner and four on the centers of the …”

Titelei/Inhaltsverzeichnis S. I-XII

„… elements in x- and y-direction n(nx,ny) point in image coordinates n̄, n̄0 normal vector and unit normal …” „… parallax model and one on a smooth optical flow approach. Following this, a motion compensation method for …” „… . . . . . . . . . . . . . . . . . . . 63 4.4 Accuracy Analysis of the Mesh-based Approach . . . . . . . . . . . . 65 5 Experiments 73 5.1 …”

doi.org/10.51202/9783186847102

Teilzugriff

Markieren für den Zitationsdownload

Medical Image Segmentation using Level Sets and Dictionary Learning

Saif Dawood Salman Al-Shaikhli

Reihe: Elektrotechnik

Band 415 2016

Treffer in den folgenden Teilen:

Topological Prior For Image Segmentation and Classification S. 29-50

„… 3.1.2, is used as a feature to classify normal and abnormal brains using a dictionary learning approach …” „… dictionary, this feature vector is classified a normal or abnormal case. Let Dc be a dictionary n × Kc matrix …” „… prior knowledge. Furthermore, beside the segmentation of brain structures, the classification of normal …”

Background S. 11-28

„… , we focus on automatic segmentation approaches using local and global image features as prior …” „… of MRI sequences of the same patient (brain with glioma tumor). The appearance of normal and abnormal …” „… development of the brain and the volumetric analysis of normal brains. Brain image segmentation is also useful …”

Coupled Dictionary Learning For Image Segmentation S. 51-82

„… algorithm using a dictionary learning approach. This part is applied to solve a multi-label brain tumor …” „… surrounding the tumor) lead to a mass effect on the normal brain tissues. Thus, due to clinical relevance, the …” „… . of biological information of the normal brain and tumor tissues [39]. The appearance of glioma …”

doi.org/10.51202/9783186415219

Teilzugriff

Markieren für den Zitationsdownload

Model-based diagnosis of electronic cooling fan drive systems

Michael Pagel

Reihe: Mess-, Steuerungs- und Regelungstechnik

Band 1262 2018

Treffer in den folgenden Teilen:

Methods of Fault Detection and Diagnosis S. 8-17

„… fault-free case (Wolfram, 2002). A symptom is the deviation of the generated features from the normal …” „… faults (Wolfram, 2002). In comparison, the model-based approach allows for a deeper and broader …” „… , the main approaches based on process models used throughout this work are covered in more detail …”

Introduction S. 1-7

„… eccentricity signatures and use a support vector machine to predict the type and the degree of eccentricity …” „… eccentricities, with their approach it is also possible to detect mixed-eccentricities. A review of methods for …” „… analysis, model- as well as knowledge-based approaches. As for other areas of fault detection of electrical …”

Fault Detection and Diagnosis of the electrical motor: Online Parameter Acquisition S. 40-98

„… (2011)). Utilization of a PRBS leads to a disturbance of the normal drive operation, which can not be …” „… method for reliable winding resistance measurement during standstill as well as during normal operation …” „… parameter in the parameter vector. The resistance and the ux linkage both depend on temperature. The self …”

doi.org/10.51202/9783186262080

Teilzugriff

Markieren für den Zitationsdownload

Reactor network synthesis with guaranteed robust performance

Xiao Zhao

Reihe: Verfahrenstechnik

Band 952 2017

Treffer in den folgenden Teilen:

Titelei/Inhaltsverzeichnis S. I-XIV

„… , Mixed-integer nonlinear programming, Normal vector approach, Robust optimization In this work a systematic …” „… of freedom SA spectral abscissa NVA normal vector approach CV controlled variable MV manipulated …” „… vector approach . . . . . . . . . . 82 5.4 Eigenvalue optimization …”

Solution methods S. 60-106

„… predefined small number for -optimality. 5.3.3 A robust design method: Normal vector approach The normal …” „… vector approach (NVA) [113, 119] is a robust design method for dynamic systems. In this method, normal …” „… 5.1: A geometric illustration of the normal vector approach. The figure is drawn in the space of …”

Introduction S. 1-16

„… first step. The resulting uncertain problem is solved by applying the normal vector approach [120 …” „… ]. Advantage of this two-step hybrid solution strategy is that, the normal vector approach in the second step …” „… two-step solution strategy (cf. Section 5.6), we directly use the normal vector approach proposed in [120 …”

Case study of allyl chloride production S. 107-132

„… treating the SIP (cf. Eq. (5.100)) is applied before applying the normal vector approach. This intermediate …” „… the critical boundary is not in the selected 2-dimensional subspace, but along the normal vector …” „… vector approach is based on Eq. (5.101). Compared to the first step, the second step is computationally …”

Summary and outlook S. 133-140

„… by applying the normal vector approach, which guarantees robust dynamic properties. A great advantage …” „… of applying this two-step hybrid method is that, the normal vector approach can be properly …” „… approach by using simulations. Simulation 134 7.2 Future research directions studies show that the …”

Bibliography S. 158-176

„… . Marquardt. A normal vector approach for integrated process and control design with uncertain model …” „… , 1972. [53] J. Gerhard, W. Marquardt, and M. Mönnigmann. Normal vectors on critical manifolds for …” „… , 2004. 165 Bibliography [119] M. Mönnigmann and W. Marquardt. Normal vectors on manifolds of critical …”

Appendices S. 141-157

„… is well defined because the normal vector r is well defined under TC.). Denote z̄′ = (x̄′T , ȳ′T )T …” „… flowrate variables evaluated at point y ∗ (elements of q in vector y) remain non-zero inside Uy∗ and only …” „… denote the vector space of nxi-by-nxi real matrix. The inner structure of Jid(y ∗) with diagonal block …”

doi.org/10.51202/9783186952035

Teilzugriff

Markieren für den Zitationsdownload

International Conference on Gears 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2294 2017

Treffer in den folgenden Teilen:

L. Liu Tooth contact analysis of a new type of face gear drive S. 457-466

„… VDI-Berichte Nr. 2294, 2017 459 of cn , the unit normal vector for c in cS . Coordinate systems for the …” „… tooth surface of convex TIG is denoted as 1 . The position vector 1R and unit normal vector 1n are …” „… tooth space; sn is the unit normal vector of 2 represented in 2S . Fig: 6: Tooth …”

B. Guilbert, P. Cutuli, P. Velex Hybrid dynamic model of hollow thin-rimmed gears S. 623-634

„… ijM M M (1) with , the normal approach with respect to rigid-body positions and 0 , the …” „… approach [10]. Fig. 1: Hybrid gear element with rigid body pinion and flexible condensed gear …” „… updated in order to account for the mesh stiffness and tooth shape variations [1]. The normal deflection …”

C. Gosselin, E. Fritz, L. Seiler CnC manufacturing of circular faced cylindrical gears S. 1343-1352

„… a plane perpendicular to the common normal vector. When applied to the reference frames of Fig. 1 …” „… ) ))sin(( 0 )cos( SR S D (4) Similarly, Eq. (5) defines vector N , the normal …” „… any contact point, the coordinates on the pinion and gear teeth must be equal and the normal vectors …”

Y. Zhao Curvature interference characteristic of conical surface Enveloping Spiroid S. 835-844

„… normal vector of g can be worked out from Eq. (1). The result is a a a aa , cos cos cos sin …” „… , the unit normal vector of Sg in d can be attained from Eq. (2) and the result is …” „… B , and o1 z zz A u B . In Eq. (8), the three components of the unit normal vector n can …”

A. von Freyberg, A. Fischer Automatic geometry segmentation of involute flank regions S. 1015-1024

„… cars. For this purpose, only a few approaches exist, and all of them are based on assumptions and …” „… demand for several applications. A novel approach for the estimation of unknown geometric gear …” „… involute flank have to be segmented first. The presented novel approach is a holistic approximation …”

J. Thomas, C. Wirth Determination and improvement of bevel gear efficiency by means of loaded TCA S. 707-718

„… for tooth contact analysis (TCA) are based on numerical methods. An approach developed by ZG GmbH …” „… the local approach the micro geometry of the gear (based on machine settings) can be optimized …” „… point #1 the normal force Fn1 acts against the pinion flank. Sliding velocity at this point causes a …”

C. Brecher, C. Löpenhaus, F. Goergen, D. Mevissen Crack propagation analysis of pitting damages of high-strength material systems in gear applications S. 281-292

„… principal normal and principal shear stresses at the top right. The vectors length correspond to the …” „… depth of the fatigue zone can be explained by the time-depended change of normal and shear principal …” „… normal and shear principal stress. The combination of damage characteristics and the new evaluation of …”

B. Černe, D. Zorko, J. Duhovnik Semi-analytical method for the prediction of the flank temperatures of polymer gears during running S. 1611-1624

„… , with a penetration tolerance of 0,005-0,01mm, a normal stiffness coefficient value of 0.1 and …” „… deformation vector. The distance change between the peak stress nodes at two adjacent time steps must be …” „… rotation of the coordinates of the current sliding nodal distance vector rd=(Xd,Yd), by the angle ∆φ has …”

E. Rigaud, P.-H. Cornuault, B. Bazin, E. Grandais-Menant Prediction of the vibroacoustic response of an electric window-lift gear motor S. 635-648

„… Abstract A numerical approach is proposed for analyzing the vibroacoustic behavior of an electric …” „… normal electromagnetic forces applied to steel stator, the electromagnetic input torque fluctuation, the …” „… positioned within the magnetic field, normal (Maxwell) and tangential (Lorentz) electromagnetic forces are …”

B. Schlecht, F. Rudolph, S. Schumann Experimental studies and simulation of hypoid gear lapping S. 1403-1414

„… simulation approaches. The most important group of these attribute local material removal to normal force or …” „… calculated wear depth along the flank surface’s normal vectors. The resulting flank geometry is then fed to …” „… , based on a widely used wear approach and a fast and accurate tooth contact simulation. High-resolution …”

E. Böyükbaş, H. J. Stadtfeld Surface structure shift for ground bevel gears S. 1391-1402

„… as normal vector. The amount of modification can be calculated with FSO(t) = Rwag [ cos(fwag …” „… allow lubricant to access the grinding contact zone. The Waguri spindle approach was not utilized in …” „… optimal surface structure. Preferred vector directions for micro pulsing: a) tangential to the flat …”

D. Talbot, A. Kahraman Simulation of gear wear using a dynamic load distribution model S. 5-16

„… mesh force, i is a vector of ones, and ( )t F is a vector containing the load distribution at the …” „… Gear Pair Number of teeth 25/31 25/31 Normal Module [mm] 3.175 2.954 Normal Pressure angle [°] 25 …” „… . VDI-Berichte Nr. 2294, 2017 15 [11] Yau, E., Busby, H. R., Houser, D. R., “A Rayleigh-Ritz approach to …”

C. Brecher, C. Löpenhaus, J. Brimmers Potential of free flank modifications for beveloid gears S. 553-564

„… GEARGENERATOR is used. Each point of the gear flank is modified along the direction of the normal vector …” „… for Beveloid Gears 3 Objective and Approach The state of the art shows the possibility of improving …” „… ² +… Optimization of the operational behavior Fig. 3: Approach for the Optimization of the Operational Behavior …”

M. Baar, P. Oster, T. Tobie, K. Stahl Theoretical investigations of the load distribution of small sized crown gear sets different material pairings S. 1593-1610

„… unterschiedlicher Werkstoffpaarung“ (TU München, Baar, 2017). 1. Abstract An analytical approach for the …” „… perpendicular to the normal plane, where the local forces, resulting from the acting torque, are calculated …” „… this approach the special geometry of crown gears stays unconsidered. 3. Tooth geometry of crown gears …”

J. Reißmann, E. Leidich Computation of the tooth root strength of Worm Wheels with a calculation program based on local stresses S. 373-394

„… flank and the force vectors are the main part of the meshed 3D model (Figure 9, left). Beside the …” „… cover the effect of material defects in steels of normal industrial quality. Because of the 50 …” „… . With this new approach, different material qualities can be compared, and the survival probability for …”

doi.org/10.51202/9783181022948

Teilzugriff

Markieren für den Zitationsdownload

A partitioned solution approach for fluid-structure interaction problems in the arterial system

Lars Radtke

Reihe: Mechanik/Bruchmechanik

Band 353 2020

Treffer in den folgenden Teilen:

Numerical methods S. 69-152

„… denotes the product of the unit normal vector n and the factor originating from the coordinate …” „… follower loads by expressing the normal vectors n̂ as J F−TN̂ and applying standard rules for …” „… points are determined such that the boundary curves s (i) j are orthogonal to the given normal vectors …”

Numerical investigations S. 153-219

„… interpolations and sampled functions (polynomial f(x, y, z) = x2 + y3 + z4 and normal vector). these source …” „… geometries, the polynomial f(x) polynomial = x2 + y3 + z4 (5.17) as well as the respective normal vector are …” „… Numerical investigations the normal vector for the cube is not well defined along its edges and at its …”

Mechanical modeling of the arterial system S. 23-68

„… these laws are applied. In view of the partitioned solution approach, this leads to separate subproblems …” „… difference between monolithic and partitioned solution approaches is illustrated and a common notation for a …” „… partitioned solution approach is discussed in detail. Like the coupling software introduced there, it is …”

Applications S. 220-252

„… 6 Applications In this chapter, the partitioned solution approach is applied to investigate the …” „… study is performed in order to demonstrate the applicability of the approach for larger scale problems …” „… demonstrating the usage of the partitioned solution approach this provides references for a later investigation …”

Bibliography S. 269-288

„… (2014), pp. 669–681. [28] S. Brändli, M. Abdel-Maksoud, and A. Düster. “A FEM-BEM approach for Fluid …” „… . Bungartz, F. Lindner, M. Mehl, and B. Uekermann. “A plug-and-play coupling approach for parallel …” „… approach for electro-thermo-mechanical problems”. In: Archive of Applied Mechanics 85 (2015), pp. 1075–1101 …”

doi.org/10.51202/9783186353184

Teilzugriff

Markieren für den Zitationsdownload

Skin Model Shapes: A new Paradigm for the Tolerance Analysis and the Geometrical Variations Modelling in Mechanical Engineering

Benjamin Schleich

Reihe: Konstruktionstechnik/Maschinenelemente

Band 438 2017

Treffer in den folgenden Teilen:

The Concept of Skin Model Shapes as a new Paradigm for the Modelling of Geometrical Variations S. 67-84

„… vertex normals of the nominal model and those of the Skin Model Shape. Indeed, this approach should not …” „… by a vector f (t) at certain discrete points in T . A straightforward approach to perform this is to …” „… Shapes is conceptualised, before approaches for the virtual representation, the visualisation, and the …”

A comprehensive Framework for the Computer-Aided Tolerance Analysis based on Skin Model Shapes S. 85-156

„… , . . . , n; j = 1, . . . , F , (5.5) and its normal vector is denoted by nfj∗ . In contrast to other …” „… plane is shiqed in the direction of its normal vector nfj∗ along the flatness value. By doing so, a …” „… normal vector of the flatness tolerance zone nfj∗ is equal to the normal of the associated plane of the …”

Application and Benchmark of the Tolerance Analysis Approach based on Skin Model Shapes S. 163-191

„… this, the worst-case limits of the vector loop approach can be found as max(pos) = 4.00. In contrast to …” „… ‡ G using the vector loop approach. It can be found, that Table 7.3: Considered Tolerances in the …” „… different tolerance analysis approaches, such as the vector loop approach, the variational model, the matrix …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… (Point-wise), Height lρ Correlation Length m Module n (Vertex) Normal Vector X Abbreviations and Symbols p …” „… Tolerance Analysis based on Skin Model Shapes 3 1.4 7e Approach: Scope and Outline of the Work …” „… regarding the GPS Standards . . . . . . . . . . . . . . . 26 2.2.4 Further Approaches for the Specification …”

Context and State of the Art S. 5-62

„… approaches, that have been proposed during the last decades. 7e aim of this chapter is to provide an overview …” „… approaches and tools for the computer-aided tolerancing with a focus on the computer-aided tolerance analysis …” „… development approaches, concurrent engineering workflows [RLW91, Soh92, GRDN97, Smi97], and predictive …”

Bibliography S. 199-238

„… loss-cost of a non-symmetrical functional requirement with a statistical tolerancing approach. In Giordano …” „… Production CPI 2001, Fez (Maroc), Paper No. 8, 2001. [And96] Andersson, P. A semi-analytic approach to robust …” „… Approach. In Houten, F. and Kals, H., editors, Global Consistency of Tolerances: Proceedings of the 6th …”

doi.org/10.51202/9783186438010

Teilzugriff

Markieren für den Zitationsdownload

Autonomous Systems 2017

Herwig Unger (Hrsg.), Wolfgang A. Halang (Hrsg.)

Reihe: Informatik/ Kommunikation

Band 857 2017

Treffer in den folgenden Teilen:

Gerhard Sartorius Metrology and Machine Learning S. 88-104

„… , identically-distributed random variables results in a normal distribution, when n approaches infinity. During practical …” „… of the main reasons for this is that this approach to problem solving has been very successful for a …” „… lot of applications in everyday life. In this approach artificial information carriers are connected …”

Gerhard Sartorius Data Preprocessing and Outlier Detection in Multivariate Data S. 105-140

„… the input vectors, single measuring values, packets of spectral measuring data and other data sources …” „… vectors should have a limitedmaximum distance to their nearest neighbors (NN). This and a continuous …” „… wavelet transform (WT) in the form of spectral components, at the end of the DV, as a vector, which is …”

Pongsarun Boonyopakorn, Phayung Meesad Performance Evaluation of an Immune Genetic Algorithm S. 32-64

„… . Each normal feature vector extracted from network traffic was represented by a hypersphere with fix …” „… . The result also illustrated that themodified approach still had the best performance. 1 Introduction …” „… , GAs have been proposed as hybrids by combining to various approaches such as PSO, Ant Colony, and …”

doi.org/10.51202/9783186857101

Teilzugriff

Markieren für den Zitationsdownload

Expressive Personalized 3D Face Models from 3D Face Scans

Stella Graßhof

Reihe: Informatik/ Kommunikation

Band 868 2020

Treffer in den folgenden Teilen:

Appendix S. 179-188

„… pi,xp̃i,x + pi,y p̃i,y (A.18) B Normal Vector of 3D Points In Ch. 4 vector normals are applied based on …” „… set of points, the normal vector for one point pk ∈ R3 is defined based on its six neighbors, which …” „… are then used to estimate a local plane. This plane has a well-defined normal vector, which represents …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… Computing Optimal Angles . . . . . . . . . 179 B Normal Vector of 3D Points …” „… different modes of individual shape and expression compared to traditional approaches based on 2D data …” „… values: s ∈ R. v lower case bold letters define column vectors: v ∈ RN×1 M upper case bold letters define …”

From 3D Face Scans to Aligned Faces S. 59-113

„… criteria: e.g. if a triangle has a large edge length and a low z-value, or if the normal vector is oriented …” „… triangular information, the normal vectors of triangles of the deformable set before Y and after Ŷ …” „… ) , (4.48) where ni ∈ RD refers to the normal vector of triangle i of the set Y . Another measure for …”

Face Models S. 114-145

„… parameters at once. As we aim to use an alternating least squares approach to estimate the parameter vectors …” „… network approach for 3D face reconstruction from a single image, based on an image-to-image framework …” „… estimated from the image and then used to change the position of each vertex along its normal. The …”

doi.org/10.51202/9783186868107

Teilzugriff

Markieren für den Zitationsdownload

Generic Topology Optimization Based on Local State Features

Nikola Aulig

Reihe: Rechnerunterstützte Verfahren

Band 468 2017

Treffer in den folgenden Teilen:

Titelei/Inhaltsverzeichnis S. I-XVIII

„… search dimensions in ES z Random mutation vector C Covariance matrix of ES mutation operator N Normal …” „… distribution σ Standard deviation of normal distribution, global step size σ Vector of strategy parameters z …” „… optimization is studied in conjunction with statistical models such as neural networks or support vector …”

Fundamentals S. 8-28

„… optimization can be differentiated into continuum and discrete approaches. Discrete topology optimization …” „… topology optimization, although the presented approaches that are discussed hereafter are transferable to …” „… the state vector, and G0 and Gl are optimization constraints with the target volume V0. In topology …”

Topology Optimization by Predicting Sensitivities S. 48-83

„… , gradient-based approaches also utilize this state vector to compute the sensitivities of the objective function …” „… feature vector s. The generic topology optimization approach with linear regression model is referred to …” „… , evolutionary computation approaches for topology optimization come with the need of an appropriate …”

Bibliography S. 177-202

„… , R., Ramakrishnan, C., and Swaminathan, N. A two phase approach based on skeleton convergence and …” „… ., Aulig, N., Olhofer, M., and Duddeck, F. Hybrid evolutionary approach for level set topology optimization …” „… , July 2016. [35] Bujny, M. Development of a hybrid evolutionary approach for level set topology …”

doi.org/10.51202/9783186468208

Teilzugriff

Markieren für den Zitationsdownload

Partitioned Solution Strategies for Strongly-Coupled Fluid-Structure Interaction Problems in Maritime Applications

Marcel König

Reihe: Mechanik/Bruchmechanik

Band 351 2018

Treffer in den folgenden Teilen:

Titelei/Inhaltsverzeichnis S. I-XVI

„… – Partitioned Solution Approach – Maritime Applications – Floating Offshore Wind Turbines – Landing Maneuver of …” „… multifield phenomena. In this thesis, a partitioned solution approach is followed to solve these kind of …” „… . . . . . . . . . . . . . . . 84 4.7.3 Vector ε-Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 4.7.4 …”

Fluid Problems S. 5-24

„… contrast, follows a material particle as it moves through space. The latter approach is commonly used in …” „… row-vector of all zeros the length of which matches the number of columns in the spatial derivative ∂x/∂χ …” „… outer unit surface normal of the surface Γt. In essence, this equation states that the variation of the …”

Coupled Problems S. 42-97

„… now focus on the interaction of multiple fields in the framework of a partitioned solution approach …” „… contrast a monolithic solution procedure with a partitioned approach, which is pursued in this work …” „… written as g(u) = 0 on Ω . (4.3) In a monolithic approach, Equation (4.3) is solved by applying a …”

Software Library comana S. 98-157

„… VertexCoordinates, class LocalPoint1> static DoubleVector computeNormal( const …” „… . Consider, for example, a std::vector that is returned from a function. In the absence of return value …” „… std::vector until C++03 [79]. In C++11, this copy is avoided due to the fact that std::vector defines a …”

Benchmark Problems S. 158-217

„… illustrate the effectiveness of the partitioned solution approach. Depending on the particular problem under …” „… Aitken relaxation, the vector-ε algorithm, and the modification of the conventional Aitken relaxation …” „… approach. Furthermore, it is interesting to note that the CPU time spent on the solution of the fluid and …”

doi.org/10.51202/9783186351180

Teilzugriff

Markieren für den Zitationsdownload

Diese Webseite verwendet Cookies

[#IABV2_TITLE#]

Ergebnisse (178)

ELIV 2019

International Conference on Gears 2023

International Conference on Gears 2019

International Conference on Gears 2022

Detection of Moving Objects for Aerial Surveillance of Arbitrary Terrain

Medical Image Segmentation using Level Sets and Dictionary Learning

Model-based diagnosis of electronic cooling fan drive systems

Reactor network synthesis with guaranteed robust performance

International Conference on Gears 2017

A partitioned solution approach for fluid-structure interaction problems in the arterial system

Skin Model Shapes: A new Paradigm for the Tolerance Analysis and the Geometrical Variations Modelling in Mechanical Engineering

Autonomous Systems 2017

Expressive Personalized 3D Face Models from 3D Face Scans

Generic Topology Optimization Based on Local State Features

Partitioned Solution Strategies for Strongly-Coupled Fluid-Structure Interaction Problems in Maritime Applications