Fuzzy motion drive method of induction motor using position sensor

A fuzzy control method for a position control system of an induction motor is introduced. This fuzzy control system uses the fuzzy rule based on control algorithms. The stop position can be changed by simply moving the optical sensor. The fuzzy control system has a higher position control accuracy of less than 45°. By comparison, the inverter driven velocity control system has a stop position accuracy of 90°. By using the fuzzy rule based control algorithms, the acceleration and deceleration profile become an s-curve shape instead of a linear shape. The result of the s-curve acceleration and deceleration is that the velocity overshoot is reduced from more than 3% to less than 0.5%. Moreover, the vibration due to the velocity change from acceleration to even speed and from even speed to deceleration is reduced by 50%