自抗扰控制算法是一种非线性控制算法，它具有良好的鲁棒性，其输出对系统内扰和系统受到的外部扰动不敏感。(ADRC is a nonlinear control algorithm. It has good robustness, insensitive to system disturbances and external disturbances.)

模拟材料非线性循环变形行为UMAT，可直接用于ABAQUS仿真计算(The nonlinear cyclic deformation behavior of the material is UMAT, which can be directly applied to ABAQUS simulation.)

基于abaqus编辑的非线性用户自定义单元(the nonlinear element based on abaqus)

电机的PI控制系统和非线性自抗扰控制系统的仿真程序。从仿真结果可以看出，线性自抗扰控制器和非线性自抗扰控制器一样，具有良好的动静态性能，(Simulation program of PI control system and nonlinear active disturbance rejection control system of motor. The simulation results show that the linear ADRC has good dynamic and sta