Results 241 to 250 of about 2,632,024 (290)

Calibration of geometric and non-geometric errors of an industrial robot

Robotica, 2001
Inaccurate positioning of the robot end effector causes joint deformation as well as geometric errors when an industrial robot has a payload at its end effector. We propose a new approach of calibration which deals with joint angle dependent errors to compensate for these phenomena.
Jang, JH, Kim, SH Kim, Soohyun, Kwak, YK Kwak, Yoon Keun   +2 more
openaire   +2 more sources

Geometrical error compensation of machines with significant random errors

ISA Transactions, 2005
In this paper, we present a new statistical approach towards soft geometrical error compensation of machines with significant errors. The approach, based on an analysis of the probability of the random error recurring, can reduce the adverse influence of random errors on the compensation of systematic errors.
Tan, K.K., Huang, S.
openaire   +2 more sources

Adaptronical compensation of geometrical machine errors

Production Engineering, 2012
Static, quasi-static and dynamic displacements influence the accuracy of machine tool results. The low-frequency parts of these displacements can, on the one hand, be traced back to static stresses resulting from gravity as well as process loads and, on the other hand, to geometrical machine errors and the faulty positioning in the working area ...
Jürgen Fleischer, Christian Munzinger, Stefan Herder, Martin Weis   +3 more
openaire   +2 more sources

Geometrical Error Compensation

2001
In automated positioning machines such as Co-ordinate Measuring Machines (CMM) and machine tools, the relative position errors between the end-effector of the machine and the workpiece directly affect the quality of the final product or the process of concern.
Tan Kok Kiong, Lee Tong Heng, Dou Huifang, Huang Sunan   +3 more
openaire   +1 more source

Error-Tolerant Geometric Graph Similarity

2018
Graph matching is the task of computing the similarity between two graphs. Error-tolerant graph matching is a type of graph matching, in which a similarity between two graphs is computed based on some tolerance value whereas within exact graph matching a strict one-to-one correspondence is required between two graphs.
Shri Prakash Dwivedi, Ravi Shankar Singh
openaire   +1 more source

On assessment of geometric errors

International Journal of Production Research, 1986
SUMMARY Measurements are carried out on engineering components and analysed to check the conformity of the components to specification. This paper discusses different methods that are useful for assessing the errors on the dimensions, form and position of geometric features.
openaire   +1 more source

Geometric error measurement and compensation of machines—An update

CIRP Annals, 2008
For measuring machines and machine tools, geometrical accuracy is a key performance criterion. While numerical compensation is well established for CMMs, it is increasingly used on machine tools in addition to mechanical accuracy. This paper is an update on the CIRP keynote paper by Sartori and Zhang from 1995 [Sartori S, Zhang GX (1995) Geometric ...
Schwenke, H., Knapp, W., Haitjema, H., Weckenmann, A., Schmitt, R., Delbressine, F.L.M.   +5 more
openaire   +2 more sources

Geometrical Track Parameters and Their Errors

1993
Now we come to the point to which all the efforts of drift-chamber design lead up — the determination of the track parameters. The point of origin of a track, its angles of orientation, and its curvature in a magnetic field are the main geometric properties that one aims to measure.
Walter Blum, Luigi Rolandi
openaire   +1 more source

Triangulation and metric of lines based on geometric error

Computer Vision and Image Understanding, 2016
The paper proposes a geometric error based triangulation and metric study of lines. As one of the fundamental problems in computer vision, line triangulation is to determine the 3D coordinates of a line based on its 2D image projections from more than two views of cameras.
Fuchao Wu, Ming Zhang 0031, Guanghui Wang 0001, Zhanyi Hu   +3 more
openaire   +1 more source

Geometrical effects of positional errors in integral photography

Journal of the Optical Society of America A, 2004
The effects of misarrangement of elements (elemental lenses and elemental images) that construct three-dimensional (3-D) images in integral photography are presented. If the lens arrays of the capturing system and the display system are not aligned accurately, positional errors of elements may occur, causing the 3-D image to be reconstructed in an ...
Jun, Arai, Makoto, Okui, Masaki, Kobayashi, Fumio, Okano   +3 more
openaire   +2 more sources