基于反步法的永磁同步电机输出反馈控制系统研究

针对永磁同步电机 (PMSM)绕组相电流和转速强耦合特性 ,采用积分反步法讨论了精确的位置跟踪控制问题 .在已知电机模型的精确参数情况下 ,假定只有转子位置可测 .设计了速度和定子电流的非线性观测器 ,提出了输出反馈控制器的设计方法 ,在保证定子电流跟踪参考电流的前提下 ,实现了位置的精确跟踪控制 .通过构造适当的Lyapunov函数 ,证明了所设计的控制系统的全局稳定性 .仿真结果表明 ,用该方法设计的PMSM控制系统滤波跟踪误差迅速以指数规律收敛到零 .

Output feedback control system based on backstepping of permanent magnet synchronous motor

Permanent magnet synchronous motor(PMSM)is complicated due to its significant no nlinear coupling between its phase winding currents and the rotor velocity. The precise position control problem is analyzed based on the integral backstepping methods. Under the assumption that only the rotor position can be measured and t he exact model knowledge are known, the velocity and stator current observer are designed respectively. An output feedback controller is propo sed to ensure the stator currents tracking their desired values. The global stab ility of the control system is proved by constructing an appropriate Lyapunov f unction. The simulation results show that the filtered tracking error of the s ystem goes to zero exponentially.