中文说明：
利用Matlab中的Simulink工具箱仿真。给定三相电源，相电压有效值100V。设计一个子系统，利用三相电源给三相全控桥提供一组逻辑触发信号， °（不使用脉冲发生器）。
English Description：
Use Simulink toolbox in MATLAB to simulate. Given the three-phase power supply, the effective value of phase voltage is 100V. A subsystem is designed, which uses three-phase power supply to provide a set of logic trigger signals for three-phase fully controlled bridge, ° (without pulse generator)