The Permanent Magnet Synchronous Motor (PMSM) is widely used in many fields. Aiming at nonlinearity, strong coupling and uncertainty of the PMSM, this paper proposes a nonlinear multi-input multi-output (MIMO) decoupling PMSM algorithm based on Active Disturbance Rejection Control (ADRC). A Lower-Upper matrix factorization approach is introduced to solve a general inverse of the measured time-varying matrix in real-time decoupling ADRC. This PMSM is based on the vector control. First, the PMSM model and vector control are simulated. Then, a first-order ADRC is introduced and used to replace the PID controller in the d and q axis of PMSM respectively. The simulation shows that the replaced system has a smaller fluctuation, faster response and better stability. Finally, the nonlinear MIMO decoupling ADRC and its inverse matrix method are deduced. Then, the decoupling PMSM control based on ADRC is verified. The simulation shows that this system has a better static and dynamic performance, and it conforms to the PMSM characteristics better. All this shows that the nonlinear MIMO decoupling ADRC is a better strategy for the PMSM. The presented algorithm also has advantage in method compared with some recent results of decoupling PMSM control.

永磁同步电动机（PMSM）广泛用于许多领域。针对永磁同步电机的非线性，强耦合和不确定性，提出一种基于主动干扰抑制控制（ADRC）的非线性多输入多输出（MIMO）去耦永磁同步电机算法。为了解决实时解耦ADRC中时变矩阵的一般逆问题，引入了一种上下矩阵分解的方法。该PMSM基于矢量控制。首先，仿真了PMSM模型和矢量控制。然后，引入一阶ADRC并将其用于替换PMSM的d和q轴上的PID控制器。仿真表明，替换后的系统波动较小，响应速度更快，稳定性更好。最后，推导了非线性MIMO解耦ADRC及其逆矩阵方法。然后，验证了基于ADRC的解耦PMSM控制。仿真表明，该系统具有较好的静态和动态性能，并且更好地符合了PMSM特性。所有这些表明，非线性MIMO解耦ADRC是PMSM的更好策略。与最近的解耦PMSM控制结果相比，该算法在方法上也具有优势。