Study On Fuzzy Control's Application In The Opto-electronic Tracking Servo System

The high ability of opto-electronic tracking servo system to tracking and acquiring fast moving targets is required, along with the rapid enhancement of target speed and acceleration. The key factor of improving the ability of opto-electronic tracking servo system to fast acquisition is to reduce adjust time and overshoot. In present, classic control plus pang-pang control was used to improve dynamic performance and a result was achieved to some extension, but not enough to engineering project. Based on embedded research on fuzzy control theory, the two-dimensional fuzzy control algorithm is inducted to opto-electronic tracking servo system, new method is provided for the design opto-electronic tracking servo system, but it is very valuable for engineering. Firstly, the developmental survey and main problem of opto-electronic tracking servo system are introduced briefly, and using fuzzy control algorithm to improve dynamic response ability is put forward. The research actuality and development dynamics of fuzzy control theory and its applications of opto-electronic tracking system are expatiated. The basic principle and design of fuzzy control are expatiated, based on studying the localization of classic control and one-dimensional fuzzy algorithm, the math model of opto-electronic tracking servo system with two-dimensional fuzzy controller is established, and then an amendatory fuzzy control algorithm is put forward. The simulation experiments are carried through contrast with former algorithms. The results show that the dynamic performance of servo system is enhanced greatly. Based on all kinds of stability analysis methods of fuzzy control system, precise math expression of multi-value relay model for fuzzy controller is deducted from theory, and phase plane and description method of classic non-linear control theory are adopted to prove the stability of the designed fuzzy control system. In the end, the algorithms discussed in the dissertation are tested with experiments by big model gimbal in the "Opto-electronic precise tracking laboratory", the experimental results are satisfactory, and then the algorithm's correctness and practicability are proved.