交流调速系统的最优控制

Optimal control of AC speed regulation system

探讨了现代控制理论在交流调速系统中的应用,运用最优控制理论,使系统性能与品质的某个性能指标达到最优值。以实际的交流调速系统,推导出系统的状态方程、建立数学模型、编制出了交流调速系统的计算机仿真和实现最优控制的有关程序。在已确定固定的系统矩阵A(t)、C(t)的情况下,以不同的权阵Q(t)、R(t),并以系统干扰矩阵D(t),输入给计算机进行仿真和计算,以探讨Q(t)、R(t)对输出的影响和规律。按计算出的系统最佳动态参数,在实际的交流调速系统中调试和运行,获得了交流调速系统的最佳动态输出响应,实现了交流调速系统的最优控制。

The application of modern control theory to AC speed regulation system was discussed.Optimal control theory was used to make the system performance and a certain performance index reach the optimal status.Actual AC speed regulation system serving as the example,the state equation of system was deduced,and the mathematical model established.In addition,the program for realizing the simulation of AC speed regulation system and optimal control were worked out.While coefficient matrix A（t） and B（t） were given,different weight matrixes Q（t）,R（t） and coefficient interferer matrixes D（t） were input to carry out simulation and computation,then the effect and rule of Q（t） and R（t） on output were discussed.According to the computed optimal dynamic parameters,the optimal dynamic output response of AC speed regulation system was obtained in actual commissioning and running of AC speed regulation system,so the optimal control of AC speed regulation system was realized.