The traditional PID algorithm for nonlinear time-varying
control system is not easy to adjust the control parameters and
not easily online adjustment, and the fuzzy control theory
with its powerful ability and processing power to better solve
such problem. The traditional PID control is through the
regulation PID control parameters to achieve the stability of
the system, and the fuzzy PID can set the PID parameters
online.Establish the rules of the fuzzy control table will
connect the deviation signal e ,the the rate of change of
deviation signal c e and the three PID parameters,so as to
realize the parameters of the set. Its basic fuzzy equation for: