【摘要】 针对一般矢量控制系统存在的对电机参数时变的鲁棒性差,转矩子系统与磁场子系统耦合,没有实现全局解耦这个问题,将不用于常规PID控制的新型控制策略——自抗扰控制引入交流变频调速系统,提出了一种变频调速系统新型控制结构,并利用其扩张状态观测器的扩张状态及非线性组合器消除一般矢量控制系统参数鲁棒性差的缺欠。理论分析与仿真实验表明,该控制策略可以有效地解决矢量控制系统参数鲁棒性差造成转矩与磁场耦合影响系统动、静态性能的问题。更多还原

【Abstract】 According to the problems which include the poor robustness of time-varying motor parameter existed in the common vector control system ,torque subsystem and magnetic field subsystem coupling and the unrealization of overall decoupling, a new-type control strategy, the auto-disturbances-rejection controller (ADRC)differenting from the routine PID control is applied to AC variable-frequency and speed regulation system, a new kind of control structure of AC variable-frequency and speed regulation system is proposed, and utilize the extended state of extended state observer(ESO) and the nonlinear combination to dispel the shortcoming of the poor robustness of systematic parameter. Theory analysis and simulation experiment show that the control strategy can solve the effect of torque and magnetic field coupling on dynamic and static performance of system caused by the poor robustness of parameter in the vector control system effectively.更多还原