Nowadays, AC motor is widely used both in industrial applications and in domestics ones
because of perfective technique specifications such as impact, high power, economic,
convinient design, control and maintenance. AC motor is used in pumps, compressors, oil
and gas industry, industrial or domestic fan, elevator, crane in construction industry, robotic
etc Therefore, the three last decades, AC motor is used instead of DC motor because of
eleminating the disadvantages of dc motor such as high maintenance cost for brush –
commutator system, vibration environments, iginite flammable environments. Consequently
AC motor is widely applied. However, there are still some control problems of AC motor
when it can be more applied. Many researches want to improve the effective operation,
reduce the production price but the results are still drawbacks. For example, the effect of
control methods using Kalman filter,
