Design of Pulse Width Modulation of Intelligent Control System of Vibration Stress Relief

The paper analyzed problems existed in realizing pulse width modulation of intelligent control system of vibration stress relief which includes short timing time of the single-chip microcomputer, method of initial value writing of the timer and low frequency accuracy, and gave corresponding solutions. It proposed basic idea of using single-chip microcomputer to realize pulse width modulation: timers of the single-chip microcomputer are timed respectively at high level and low level to make common I/O interface output pulse with constant frequency or variable frequency and constant width. The Proteus and Keil C joint simulation results show that the design method of pulse width modulation of intelligent control system of vibration stress relief can output pulse signal meeting the requirements.