Model predictive controller and fractional- order proportional-integral controller application in the cascade system

The model predictive controller (MPC) can deal with the pure delay system directly and has a good tracking performance. It also has strong robustness when model mismatch happens. The fractional-order proportional-integral (FOPI) controller has a fast response and disturbance rejection. A new MPC-FOPI controller is proposed to deal with the delay and interference links in the cascade system. The new controller is designed to control the cascade system. The results show that the new controller has the advantages of the two mentioned controllers and can effectively achieve the cascade system control.