说明：  永磁直线发电机的数学模型，关于动子位置与速度的，abc三相，能输出三相交流电，仿真步长越小波形越平滑，有兴趣自取。
(The mathematical model of permanent magnet linear generator, about the position and speed of the motion, ABC three-phase, can output three phase alternating current, the smaller the simulation step is, the more smooth the waveform is, the more interested it is.)