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,