Variable-domain hierarchical fuzzy control and its application

In the paper, a promising fuzzy control, a variable-domain hierarchical fuzzy controller (VDH-FC) is discussed. The simulation results show that the VDH-FC has improved the limitation of the simple fuzzy controller, enhanced the robustness and stationary performance of the system. It needs little computation and can be implemented easily and conveniently. It has a satisfying result when applied to industrial recycled water temperature control.