阐明了整个函数发生器的工作流程以及各部分电路所完成的功能，并说明了三种波形产生的工作原理。
Demonstrate the working process of function generator and the functions of its circuits, and depict the working principles of three waves.
根据SHEP - WM波形发生原理，设计和实现一种基于CPLD的SHEPWM数字触发电路。通过实际的现场实验，验证设计的正确性。
According to the generating theory of SHEPWM wave, a design of digital firing circuit on SHEPWM based on CPLD is implemented and correctness of design is verified by practical experiment.
传统的波形发生器通常是由信号发生器或专用控制系统的响应电路产生。
Traditional waveform generator is mostly produced by signal generator or responsive circuit of professional control system.
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