Fuzzy adaptive fractional order PD permanent magnet synchronous motor speed control based on torque compensation

The permanent magnet synchronous motor (PMSM) control system is a nonlinear, strongly coupled complex system, and in order to improve the overall control performance of the PMSM, an Fuzzy adaptive fractional order PD(FFPD) control strategy based on torque observation(TO) compensation is proposed. The parameters of the fractional-order PD controller are optimized online using fuzzy logic reasoning, and a graphical design method of the fractional-order PD controller parameters based on frequency domain performance indicators is proposed to obtain the initial values of the fuzzy adaptive fractional-order PD controller parameters graphically and intuitively. A load torque observer is designed to improve the anti-interference capability of the system by converting the observed load torque into compensation current in equal proportion. Simulation and experimental results show that the strategy proposed in this paper has good dynamic and static performance and robustness.