Error Modeling and Compensation of Linear Motors Positioning Stage Based on RBF Network

Jian Lin; Mu Lan Wang

doi:10.4028/www.scientific.net/AMR.139-141.1744

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 139-141Error Modeling and Compensation of Linear Motors...

Error Modeling and Compensation of Linear Motors Positioning Stage Based on RBF Network

Abstract:

The error measuring, modeling and compensation techniques for the positioning stage driven by NC linear motors are studied. The error source of the positioning stage is analyzed, the positioning errors are measured by the laser interferometer, and the neural network error model is set up by RBF algorithm. In order to evaluate the accuracy of RBF network prediction method, part of the error samples are used to test. A DSP-core linear motor experimental platform is built up, the error compensation experiments are conducted, the real-time requirement is proved to be met. The simulation and experimental results indicate that the RBF neural network error model trained by samples has a good learning ability and generalization ability, the positioning accuracy is improved significantly, and the effect of random errors on the system is reduced also.

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Periodical:

Advanced Materials Research (Volumes 139-141)

Pages:

1744-1748

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.139-141.1744

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Online since:

October 2010

Authors:

Jian Lin, Mu Lan Wang

Keywords:

Error Compensation, Error Modeling, Linear Motor, Positioning Errors, Radial Basis Function (RBF)

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