Fig. 1 equivalent circuit at synchronously rotating
reference frame
PID and adaptive control method are many used. But
these methods are complicated that evaluated the d-q
axis parameter and is very sensitive at parameter
variation, load change.
Fuzzy controller and neural network are developed
for speed control of induction motor. These methods
have the advantage about parameter variation, load
change, system disturbance. But each controller
contains problems. To develop more new method, the
new way is tried. Mixture control that is inter-mixed
adaptive, fuzzy control, neural network and genetic
algorithm is predicted the influential method.
Figure 2 schematically expresses about research of
hybrid artificial intelligent controller.
.rAdaptive
At equivalent circuit of Figure 1 evaluated the voltage
equation is equal that below;
eLmi ids