III. SPEED REGULATION SYSTEM CONTROLLER DESIGN
A. fuzzy PID controller basic principle
Fuzzy PID control is in the PID control based on fuzzy
control theory to join and output, the fuzzy theory is to solve
life common fuzzy phenomena develops. The application of
the most effective, the most widely is fuzzy control. Fuzzy
control is the modern emerging a control means.It is the
outcome of the combination with the fuzzy theory, the fuzzy
technology and automatic control technology. The basic idea
is that in the application of the fuzzy control method set
theory, through the simulation people's way of thinking for
some can't structure mathematical model of the controlled
object effective control. Fuzzy PID control principle as shown
in figure 2 shows.