Geometrical error compensation and control of an XY table using neural networks

Tan, Kok Kiong; Huang, Sunan; Lee, T.H.

doi:10.1016/j.conengprac.2005.01.003

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…Some papers have been focused only on the compensation problem. Tan et al [12,13] have developed an algorithm for the automatic generation of dynamic S-function blocks which can be used for geometrical error compensation of precision machines. The function block is composed of neural network approximations of the geometrical errors of the machines which can be served as the basis for error compensation.…”

Section: Geometrical Errors Compensationmentioning

confidence: 99%

Impact of measurement procedure when error mapping and compensating a small CNC machine using a multilateration laser interferometer

Linares

Chaves‐Jacob

Schwenke

et al. 2014

Precision Engineering

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International audienceThis paper deals with the accuracy of compensation of machine tools using a tracking interferometer using the multilateration method. The measurement strategy and thermal drift compensation of the measurements are studied. It shows that most effects of temperature are accurately compensated by the laser tracking interferometer software. However, thermal drifts of accessories are not taken into account, and are therefore not corrected. To validate the robustness of procedures, the geometrical errors of the same machine tool were measured by five measurement strategies using the same equipment. Each strategy is devised and carried out independently by a different person from several institutions. For each strategy, the geometrical compensations were applied to a set of nominal tool path points. The difference, between the nominal points and the compensated or uncompensated points was calculated. This criterion was used to discuss the procedures employed by the participants

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Section: Geometrical Errors Compensationmentioning

confidence: 99%

Impact of measurement procedure when error mapping and compensating a small CNC machine using a multilateration laser interferometer

Linares

Chaves‐Jacob

Schwenke

et al. 2014

Precision Engineering

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“…Motion control is an important element in a wide range of industrial applications such as manufacturing machines and semiconductor manufacturing equipment [1,2,3]. Generally, each motion control system can be further divided into the mechanical subsystem and the control subsystem [4].…”

Section: Introductionmentioning

confidence: 99%

“…Imperfections in the mechanical subsystem are by far the main obstacle that lies in the way of the development of high precision positioning systems. These imperfections include geometric errors, thermal expansion, backlash and friction [1,2]. Geometric errors are the result of imperfections in the geometry of the mechanical components.…”

Section: Introductionmentioning

confidence: 99%

A Vision-Based Embedded Control System for Crystal Reorientation and Inspection

Xie

Tsoi

Singh

2012

AMR

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This paper proposes a vision-based embedded motion control system that is developed in our research group. The system is an integration of three subsystems including, an embedded positioning platform, a vision system for inspection and a crystal reorientation system. The system is used as a positioning platform and crystal reorientation system to automate the crystal reorientation process. This process is important in ensuring that the units are correctly oriented for production processes. The focus of this research is placed on how to develop the embedded positioning platform, the crystal reorientation system, and how to improve the system performances including positioning and reorientation accuracy in high speed operation and quality of inspection. A distributed control architecture has been developed using PIC18F4520 microcontrollers. Tests run on the complete system have shown that the system is capable of a minimum indexing time of 1.53 units per second and a reorientation time of 1.42 seconds.

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