摘要
小型PLC一般都提供脉冲定位功能,但不提供模拟量伺服接口。在液压驱动位置控制及其它位置闭环控制场合,常常需要模拟量接口。利用小型PLC内置的高速计数器、脉冲定位功能、PID调节功能和模拟量转换模块通过建立合理的控制模型和适当的参数调整实现了模拟量接口伺服控制功能。在一些工业控制场合,这种控制方式具有一定的使用价值。
Small PLC generally provides pulse positioning function, but does not provide analog servo interface. Analog servo interface is needed usually in hydraulic position control system and other closed-loop position control system. A reasonable control mode was established by using the built-in high speed counters, pulse positioning function, PID function and D/A conversion module of small PLC, finally realized the analog interface servo control function by setting proper parameters. This control plan has certain useful value in some in- dustrial control situations.
出处
《电气传动》
北大核心
2009年第9期67-70,共4页
Electric Drive
