In order to achieve high-performance motor control

a design method of vector control system using full fractional-order PI

λ

D

μ

controller based on the theory of fractional calculus is proposed. According to the mathematical characteristics of the fractional-order controller

the forms of fractional-order current loop controller and voltage loop controller in vector control system are determined. Then the parameters of the fractional-order controller are obtained based on the phase margin criterion

the amplitude criterion and the gain robustness criterion. In the numerical simulation

the Oustaloup recursive filter was used to realize the rat

ionalization and approximation of the fractional operator. The dynamic performance of the integer-order controller and the fractional-order controller under the same design criteria were compared under the transverse speed

rotational speed variation and load mutation. The control method was simulated and experimentally verified and the results showed that the system with current-speed double-closed-loop and full-fractional-order PI

λ

D

μ

controller is superior to the system with integer-order PID controller in both tracking and anti-jamming performance. Using the fractional-order vector control system can make the overshoot and settling time of step response be decreased by 24.84% and 7.35%

respectively compared with the integer-order controller

and the dynamic landing of the former is 22.5% of the latter in the input-changeable system. The results show that the proposed method can be applied to the control of high performance vector control system of asynchronous motors.