Study on high precision and smooth tracking technology of pod based on mirror control

摘要

High precision stabilization aiming and tracking technology is the core performance of photoelectric pod. Its accuracy determines the quality of image acquisition and affect the final technical and tactical indicators. In order to achieve full spectrum detection, the large pod adopts the open form, and realizes the stabilization and tracking function by controlling the two-dimensional motion of the mirror. In this paper, we focus on the research of airborne pod environment and high-precision stable tracking technology based on mirror control. Firstly, the composition of the pod system is introduced and the coupling relationship between the three-axis perturbation of the aircraft and the mirror is analyzed. Secondly, a high precision sensor information fusion and matching strategy is designed, and the synthetic angle delay compensation algorithm is briefly introduced. Then, the multi-sensor feedback control algorithm is proposed, and the acceleration loop is introduced to improve the ability of the control system to suppress disturbance torque. Finally, the proposed method is introduced into Simulink simulation. The results show that the tracking accuracy can be improved to within 0.2 mrad, which proves the effectiveness of the control strategy and can be applied to other optoelectronic platforms.