说明：  基于准稳态的同步发电机模型，建立对其励磁电压的模糊PID控制，并且在负载产生波动的情况下，观察各参量的波形，进行演示
(Based on the quasi steady state of the synchronous generator model, the fuzzy PID control of the excitation voltage is established, and the waveforms of the parameters are observed in the case of the fluctuation of the load.)