【摘要】 过渡响应的鲁棒性反映输出误差的最大瞬时值.利用l∞范数和线性矩阵不等式(LMI),给出了评价电流控制系统鲁棒跟踪性能的方法.采用该方法直接评价了电流控制系统的跟踪鲁棒性能.以内埋式永磁同步电动机为例,对阶跃和正弦电流给定信号下的最优电流控制系统以及调速系统进行了仿真研究,结果表明合理的控制器参数选择,使系统能实现电流的准确跟踪以及精确的速度控制,对参数变化和负载扰动具有很强的鲁棒性.更多还原

【Abstract】 The tracking robustness of the system reflects the peak value of the output error. By defining it with the l- infinity norm and linear matrix inequalities(LMIs), we propose a method for evaluating the tracking performance of a MR- ILQ(model-reference inverse linear quadratic) optimal current-control system. An interior permanent magnet synchronous motor is employed to simulate the optimal current-control with step or sinusoidal inputs, as well as the speed control. The results demonstrate that the system can achieve the exact tracking of current and the accurate speed control by rational parameter choices. The results also show the strong robustness against parameter variations and load disturbances.更多还原