Research of disturbance rejection on the optical communication precision tracking system

The satellite platform and the space environment is the main reason of affecting tracking precision. So, remote and high precision light beam for fast and accurate acquisition, pointing and tracking is the guarantee of optical inter-satellite communication system performance. The use of fuzzy variable universe method combined with PID control to realize the fine tracking system for noise suppression requirements, and we put forward an improved fuzzy self adjusting factor and learning algorithm of the control parameters and rules of the on-line self adjustment, combined with PID control system of no difference regulation. The experimental results show that, for sensitive vibration noise range, the method has good dynamic performance, and can effectively guarantee the goal of fast and accurate tracking with stable high precision, fast dynamic response, adaptive interference robustness.