A PID controller based on nonlinear compensation

A PID controller based on nonlinear compensation is put forward. It is based on intelligent control, divided feature regions by adopting the deviation and the changing rate of control system. The corresponding compensationrules are applied. Because the compensationunit can magnify, minimize orkeep the deviation signal by recognizing the diverse feature regions, the dynamic and static performance of the new controller can be improved. The numerical simulation results show the superior robustness and anti-interference performance of the new controller to the normal PID controller.