Negative Effect Compensation of Disturbance for High-Precision Voice Coil Fast Steering Mirror

Abstract

In order to further improve the stability of the composite axis aviation photoelectric stabilization platform, a control method of negative effect compensation of disturbance (NECOD) is proposed and applied to the voice-coil fast steering mirror adjusting the optical path of the platform. The experimental results show that the control accuracy and closed-loop bandwidth of the voice-coil fast steering mirror based on NECOD have been greatly improved, while its advantages of large stroke are not possessed by piezoelectric fast mirror. The experimental results of high-frequency turntable and vibration table show that NECOD proposed in this paper has better antidisturbance performance than DOB and ARC, and its parameters are less and easy to adjust. It is proved that the robustness of NECOD is very strong in the presence of 20% parameter perturbation. The final LOS stabilization accuracy experiment shows that the NECOD voice-coil fast steering mirror proposed in this paper fully meets the performance requirements of high-precision aviation photoelectric stabilization platform, and has high practical value for improving the antidisturbance performance of the control system of aviation photoelectric stabilization platform.