Multi-rate H8 Control for Electro-Optical Tracking System Based on Internal Model Algorithm

In order to get good tracking precision and attenuation of disturbance, a kind of two degree of freedom internal model controller for electro-optical tracking servo system is presented in this paper. By converting the design of the controller to a H_infin optimization problem, the system can attain good robust performance. Considering the dynamic behavior between sampling time and multi-rate signals in system, the sampled-data control technique such as jump transform, lifting and so on are used to the synthesis of robust controller. The simulation results show that the designed internal model controller not only can guarantee good attenuation of disturbance as well as the tracking performance, but also can finally satisfy speed control requirement for high-performance linear servo systems. By this way, the works in this paper give a new method to design the controller for servo system of electro-optical tracking.