A strategy setting two different constrained areas including a small error area and a big error area for controlled variables is presented, and special parameters are designed to adjust error areas. If the controlled variable lies in the big error area, the controller is regulated and the control action is strengthened such that controlled variables return to the small error area as soon as possible. Control action changes continuously from small to big error area. Therefore the jump can be avoided, and the surge is eliminated, which makes the control performance better. Simulation results show that the implementation method can improve the system dynamic performance much better under uncertainty.
Control and Decision