Research on Robustness and Denoising Based on the H-F Algorithm of the Large-aperture Optical Infrared Telescope

In this paper, an H-F($H$ ∞ -Filter) control algorithm is proposed to ensure that the permanent magnet synchronous motor (PMSM) of the large-aperture optical infrared telescope drive system can operate normally under the condition of high switching noise and extreme large wind-borne disturbances in the control system. The H-F algorithm combines the position loop and the velocity loop controller with the filtering algorithm to form the H-F controller and optimizes the control structure of the telescope drive system to be applied to the large-aperture optical infrared telescope. The telescope drive system is a typical large-inertia, ultra-low-speed, high-precision system, and the robustness of the H-F algorithm is verified by the position tracking form in the arc second range, the influence of switching noise, and the addition of wind-borne disturbance in the experimental process. The superior performance of the H-F algorithm is verified by comparing it with the traditional triple closed-loop PID control.