基于通用运动控制器的磁场点测台控制系统

Control system of magnetic field measurement bench based on UMAC motion controller

磁场点测台是加速器领域测量磁铁和波荡器等磁元件的主要设备之一,其需要在快速精确的控制系统支持下工作。中国工程物理研究院应用电子学研究所近期搭建了一套磁场点测台,并基于通用运动控制器(UMAC),设计开发了该磁场点测台的控制系统。系统采用了上位机工控机和下位机UMAC两级计算机控制的层级结构,可以充分发挥其各自优势:下位机UMAC可以快速、精确地控制电机动作,因此下位机程序负责控制六轴运动平台以go-stop模式运动;上位机工控机数据处理和存储能力强,因此上位机人机交互界面负责收集、记录和显示磁场数据,并负责设定磁场测量参数和监控运行状态。两级计算机动作的同时性通过触发信号来保证。

Magnetic field measurement bench is one of the most important facilities to measure magnet and undulator in accelerator domain,and it needs a precise and fast control system to work.Recently,a magnetic field measurement bench was built at Institute of Applied Electronics,China Academy of Engineering Physics.Based on Universal Motion and Automation Controller(UMAC),we designed and developed the control system.The system has a two-level control structure including the upper computer and the lower computer UMAC,which gives full play to their respective advantages:the lower computer can control motor action fast and directly,therefore the programs at the lower machine are responsible for controlling go-stop movement of the6-axis motion bench;the upper computer has substantial capacity of data processing and storage,therefore the man-machine interface at the upper computer is responsible for collecting,saving and displaying magnetic field data,and it also finishes setting measurement parameters and monitoring work status of magnetic measurement bench.The simultaneity of the two level computer actions is ensured by trigger signals.