Multi-PI control of Hammerstein-Wiener systems

The multimodel control approach is initially introduced into the Hammerstein-Wiener systems which can be approximated by Hammerstein-Wiener models. First we use a set of local linearized models to approximate the considered Hammerstein-Wiener system, and then we design a local PI controller for each local linearized model. Finally we combine the PI controllers into a multi-PI controller using an included angle based weighting method. Simulations demonstrate that the presented multi-PI control method is easy and effective.