七段式变频调速在舞台吊杆控制中的应用  

Application of Seven-phase Frequency Control of Stage Booms

作　　者：骆东松[1] 武晓峰 LUO Dongsong;WU Xiaofeng(College of Electrical Engineering and Information Engineering,Lanzhou University of Technology,Lanzhou 730050)

机构地区：[1]兰州理工大学电气工程与信息工程学院,兰州730050

出　　处：《舰船电子工程》2018年第4期133-136,共4页Ship Electronic Engineering

摘　　要：传统舞台吊杆设备多采用定速控制,在运行过程中存在很大的运动惯性和机械延时,这些因素影响调速吊杆的定位精度。演出过程中吊杆快速启停,钢丝绳受力突变,对设备造成冲击,影响吊杆的平稳性和高精度定位。该文介绍了在"Ethernet+PROFIBUS–DP"双层网络通讯下,采用"上位工控机(IPC)+可编程控制器(PLC)+变频器+交流电机"的控制模式组成七段式变频调速的位置和速度双闭环控制系统。工程实践表明,该方法获得了理想的调速效果,提高了吊杆定位精度,实现了零速制动。Traditional stage boom equipment is adopting cruise control,which is caused by the process of the speed boom running easy to be affected by movement of inertia and mechanical delays.When performance is going on,booms need quick start or stop that causes sudden change of pulling force value of wire rope which is easy to cause destruction for equipment.There is a marked difference on stability of boom and high accuracy positioning.The experimental that using“IPC+PLC+frequency converter+AC motor”by seven-phase frequency control of the position and speed double-closed-loop control system realize boom control which is applied on Ethernet+PROFIBUS–DP double layer network communication.Engineering practice shows that the method obtains the ideal speed control performance,improves the boom’s positioning accuracy,and also achieves zero speed braking.

关 键 词：双闭环控制 七段式变频调速 调速吊杆 零速制动 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]