1. INTRODUCTION
Recently, Artificial Intelligent control using Fuzzy
control, neural network and genetic algorithm are
recognized primary techniques that should be improved
performance of power electronic system. These
techniques are developed adaptive-artificial intelligent
controller with mixed adaptive control technique. And
these inter-mixture methods will high performance the
induction motor drive that required adaptability and
robustly. [1]-[3]
Indirect vector control is applied extensively the drive
system for high performance of induction motor.
Because PI controller is indicated satisfactorily response
of steady-state, industrial field is used a lot of PI
controller. But PI controller can not expected
satisfaction performance in transient-state because of
nonlinear of induction motor. Especially, PI controller
can not be obtained satisfaction performance about
parameter variations such as disturbance, speed and load.
If proportion gain kP of PI controller is big, rising time
is short, overshoot is big and stability time is long and if
kP of PI controller is small, rising time is long,
overshoot is small and stability time is short. Thus
although PI controller adjusted the gain coefficient,
performance of drive can not more improved.
To satisfaction performance of drive, adaptive is
researched.[4] Adaptive control can be obtained more
excellent performance than existing PI controller.
Adaptive control technique is based on mathematical
modeling and is very complicated because of numerous algorithms.