Lock-in error compensation based on synchronous filtering for dithered ring laser gyro

Zhenfang Fan; Hui Luo; Guangfeng Lu; Shaomin Hu

doi:10.1117/12.975752

15 October 2012 Lock-in error compensation based on synchronous filtering for dithered ring laser gyro

Zhenfang Fan, Hui Luo, Guangfeng Lu, Shaomin Hu

Proceedings Volume 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy; 841903 (2012) https://doi.org/10.1117/12.975752
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

The mechanical dithered ring laser gyro (MDRLG) has to go across lock-in region twice every dither cycle, thus the information loss is inevitable. According to the lock-in equation, the lock-in error can be expressed by observable signals. The lock-in error compensation of MDRLG based on synchronous filtering is demonstrated in this paper. The outputs of MDRLG and error accumulations are filtered synchronized to insure their alignment in the time domain. Experimental results show that the effect of lock-in compensation is improved.

Citation Download Citation

Zhenfang Fan, Hui Luo, Guangfeng Lu, and Shaomin Hu "Lock-in error compensation based on synchronous filtering for dithered ring laser gyro", Proc. SPIE 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy, 841903 (15 October 2012); https://doi.org/10.1117/12.975752

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