The architecture of fuzzy PID gain conditioner and its FPGA prototype implementation

Tuning the parameters of PID controller is very important in process control. This paper proposes a FPGC (Fuzzy PID Gain Conditioner) algorithm, a method based on fuzzy control, which tunes the PID controller online. The VLSI architecture of the algorithm is presented in this paper. It can not only realize the algorithms effectively but also improve the performance of the controller significantly. The FPGA prototype implementation based on this VLSI structure is also given. Finally, a virtual control system is used to test the effectiveness of the design.