基于激励分析的变负载整流设备控制方法

Excitation-analysis Based Varying Load Rectifying Device Control Method

针对电镀系统中变负载大型硅整流设备电流调节的工艺要求,实现电流调节的精确和稳定,通过分析其输出原理以及在最大负载下的方波全程激励响应,得到该设备的近似分段线性输出特性,从而建立反映负载变化情况的变脉宽PWM控制策略,控制信号的脉冲宽度依据电流上升段的负载特性进行实时计算。同时介绍了这种控制策略的软件设计方案,并提供了利用组态软件WinCC实现该算法的实验结果图,通过手动与自动状态下采集的电流比较,验证了这种方法的可行性。

To meet the current regulation requirement of large silicon rectifying device with varying load in electroplating system,and achieve the precision and stability of current regulation,the equipment s output principle and full encouraging response of square wave under the largest load scope are analyzed to obtain the approximate sectional linear output characteristics.Thus,the mathematical model of variable pulse width PWM control strategy reflecting varying loads can be built and the pulse width of control s...