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Optical Engineering

Virtual velocity loop based on MEMS accelerometers for optical stabilization control system
Author(s): Wei Ren; Chao Deng; Yao Mao; Ge Ren
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Paper Abstract

In the optical stabilization control system (OSCS) control system based on a charge-coupled device (CCD), stabilization performance of the line-of-sight is severely limited by the mechanical resonance and the low sampling rate of the CCD. An approach to improve the stabilization performance of the OSCS control system with load restriction based on three loops, including an acceleration loop, a virtual velocity loop, and a position loop, by using MEMS accelerometers and a CCD is proposed. The velocity signal is obtained by accelerators instead of gyro sensors. Its advantages are low power, low cost, small size, and wide measuring range. A detailed analysis is provided to show how to design the virtual velocity loop and correct virtual velocity loop drift. Experimental results show that the proposed multiloop feedback control method with virtual velocity loop in which the disturbance suppression performance is better than that of the dual loop control with only an acceleration loop and a position loop at low frequency.

Paper Details

Date Published: 4 August 2017
PDF: 8 pages
Opt. Eng. 56(8) 085101 doi: 10.1117/1.OE.56.8.085101
Published in: Optical Engineering Volume 56, Issue 8
Show Author Affiliations
Wei Ren, Institute of Optics and Electronics, Chinese Academy of Sciences (China)
Chinese Academy of Sciences (China)
Chao Deng, Institute of Optics and Electronics, Chinese Academy of Sciences (China)
Chinese Academy of Sciences (China)
Yao Mao, Institute of Optics and Electronics, Chinese Academy of Sciences (China)
Ge Ren, Institute of Optics and Electronics, Chinese Academy of Sciences (China)


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