In this paper,a simple and reliable proportional solenoid valve drive control system is designed,which is based on the analysis of the influence of the change of the current tracking controller parameters on proportional solenoid valve flow hysteresis.The current fluctuation of proportional solenoid valve is used as the control target,and the flow hysteresis width of the proportional solenoid valve can be controlled accurately by changing the current hysteresis width of the tracking controller.The proportional solenoid valve current tracking PWM control system was designed using STC12C5A60S2 microcontroller as the core component.The practicability of this control algorithm in the application of the proportional electromagnetic valve flow control was verified through the comparison of experiment.The experimental results showed that the control system has high precision,low price,simple operation,stable operation characteristics.%在分析电流跟踪控制器参数变化对比例电磁阀流量滞环影响的基础上,设计了一种简单、可靠的比例电磁阀驱动控制系统.以比例电磁阀驱动电流脉动量作为控制目标,通过改变电流跟踪控制器的滞环宽度来精确地控制比例电磁阀的流量滞环.以STC12C5A60S2单片机为核心器件设计了比例电磁阀电流跟踪PWM控制系统,并通过比对实验,验证了该控制算法应用在比例电磁阀流量控制上的实用性.实验证明:该系统具有控制精度高、价格低廉、操作简单、运行稳定等特点.
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