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介绍了一种反激式电流型控制开关电源控制电路补偿网络的优化设计方法。利用磁化电流的波形关系 ,推导出小信号传函模型。以系统动态误差的平方积分 (ISE指标 )为目标函数 ,采用二次序列规划 (SQP)算法求出补偿网络最优参数。数字仿真结果验证了该方法的正确性和有效性。
This paper introduces a method of optimizing the compensation network of flyback current control switching power supply control circuit. Using the waveform of magnetizing current, a small signal transfer model was derived. The square integral (ISE index) of the system dynamic error is taken as the objective function, and the optimal parameters of the compensation network are obtained by using the quadratic sequence programming (SQP) algorithm. Numerical simulation results verify the correctness and effectiveness of the method.