Abstract:
A new fuzzy PID control algorithm based on PID engineering turning methods is proposed in this paper. The designing method of the algorithm can be divided into two steps: firstly, simplify PID formula using Z-N or critical proportion methods, then construct a fuzzy control table by fuzzy reasoning. During real time control, the parameter of PID controller can be adjusted by looking up the fuzzy table. Experimental and simulation results in hydraulic elevator show that the algorithm proposed has good performances.