中文说明：matlab/simulink仿真模型，在matlab7.13下建立，并进行了调试。适用于仿真学习，simulink学习的参考。仿真模型不是很完善，只能实现一部功能，还有待改进。
English Description：
The MATLAB / Simulink simulation model is established and debugged in MATLAB 7.13. It is a reference for simulation learning and Simulink learning. The simulation model is not perfect, only one function can be realized, and it needs to be improved.