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分析了三相次级整流点焊机主电力电路的控制过程,采用8259A中断控制器将3个同步脉冲及3个触发延迟角延时到信号等6个中断合理排队,从而解决了控制系统的时序安排问题。详细介绍了8259A与89C52单片机的接口电路及软件编程。
The control process of the main power circuit of the three-phase secondary rectifier spot welder is analyzed. The 8259A interrupt controller is used to properly queue up to six interrupts of three synchronous pulses and three trigger delay angles to the signal, so as to solve the problem that the control system Timing issues. Details of the 8259A and 89C52 microcontroller interface circuit and software programming.