半浮连轧管机组限动链传动控制系统

DC Drive System of Retainer of Semi-floating Mandrel Mill

分析了由位置控制器、直流传动装置和PLC组成的半浮芯棒连轧机组限动链控制系统的硬件配置及软件组成。此系统在通用的速度、电流双闭环逻辑无环流直流可逆系统的基础上,利用位置控制器作为位置环,给定位置和实际位置的偏差通过位置PI调节器运算生成相应的速度值vk,与设定速度vt叠加,作为双闭环系统速度环的速度给定,构成位置、速度、电流三闭环。利用中断实现芯棒定位和毛管定位之间的切换。经测试证明,此系统具有定位精度高、动态性能好等特点。

Hardware and software configuration of drive system with position controller, DC drive unit and PLC for a retainer of semi-floating mandrel mill are analysed. On the basis of general DC drive system with speed closed loop and current closed loop, the position controller is taken as position loop. The deviation between the setting position and actual position is considered as positioning PI regulator input. The output is used as an additional speed demand, together with the speed demand, is transmitted to the DC drive system. The system has high precision of position and dynamic performance.