Study on Auto Disturbance Rejection Controller of HAPC Base on Parameters Optimization

This paper refers to the HAPC of 400mm single stand reversible cold rolling mill, establishing mathematical model, simplifying and reducing orders for system transfer function on the foundation of reasonable assumption. This paper also designs PID and LADRC for reducing order model and uses fuzzy adaptive to do online optimization for the parameters of LADRC. In the end, the paper shows the simulation program of the controllers mentioned above. The results show that LADRC has less overshoot, shorter settling time, better robustness and stronger ability to restrain the disturbance. The conclusion is that the control performance of LADRC is superior than that of PID.