Modified three-loop design and simulation of servo system for ir imaging seeker

The model of servo system for IR imaging seeker which adopts three loop control (current loop, velocity loop and position loop)for single channel is proposed and build. Then, the model of three loop for single channel and the model of double loop for single channel which is currently adopted by arms are simulated within time domain. The results of simulation indicate that dynamic performance of three loop is better than the double loop, which means that servo system using three loop has faster response. The modeling and simulating offer theoretic support for engineering realization of three loop for single channel.