Research on dynamic error correction method for NC rotary table based on time grating sensor

Ziran Chen; Donglin Peng; Yong Zheng; Fangyan Zheng; Zhonghua Gao

doi:10.1117/12.904943

15 November 2011 Research on dynamic error correction method for NC rotary table based on time grating sensor

Ziran Chen, Donglin Peng, Yong Zheng, Fangyan Zheng, Zhonghua Gao

Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 832127 (2011) https://doi.org/10.1117/12.904943
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

Abstract

In order to apply original absolute time grating sensor to closed loop numerical control system, a forecasting angle displacement method with time series analysis theory is proposed. In this way, an absolute time grating sensor can be transformed to an incremental time grating. In addition, a discrete standard quantity interpolation method is present to reduce dynamic forecast error. In this way, forecast error of the last measurement period will be corrected in the next measurement period. Therefore, cumulative errors can be eliminated. The experiment results prove that dynamic errors can be controlled within ±3″ with error correction method.

Citation Download Citation

Ziran Chen, Donglin Peng, Yong Zheng, Fangyan Zheng, and Zhonghua Gao "Research on dynamic error correction method for NC rotary table based on time grating sensor", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 832127 (15 November 2011); https://doi.org/10.1117/12.904943

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