| Citation: | LIN Xia, BAI Tao, WU Guoqiang, et al. Calibration of reaction wheel torque measuring system based on wavelet methods[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(1): 200-206. doi: 10.13700/j.bh.1001-5965.2016.0054(in Chinese)
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It is a superior new closed-loop simulation method to introduce reaction wheels' real-time torque acquired by a torque measuring system into satellite semi-physical simulation. However, due to the sustained external torque introduced into the simulation closed loop, the semi-physical simulation could not run accurately in a long time. To solve this problem, with experimental data analysis, it was determined that the reaction wheel measuring system was the external torque interference source. Then, based on the wavelet threshold filtering method, we eliminated the initial bias by using the real-time wavelet filtering method and cancelled the process deviations by moving average method incorporating with wavelet de-noising method, and thus the measuring system can be calibrated accurately. Finally, with these methods applied, the satisfactory result was achieved in the semi-physical closed-loop simulation.
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