基于PLC的中子束线开关控制系统的设计  

Design of the PLC based switch control system for neutron beam line

作　　者：孙远[1,2] 周爱玉[1,2,3] 肖松文[1,2] 吴延岩 韩庆夫[1,2,3] 朱涛[4] 

机构地区：[1]中国科学院高能物理研究所东莞中子科学中心,东莞523803 [2]东莞中子科学中心,东莞523808 [3]中国科学院高能物理研究所北京同步辐射装置,北京100049 [4]中国科学院物理研究所,北京100190

出　　处：《核技术》2015年第4期29-34,共6页Nuclear Techniques

摘　　要：介绍了一种基于PLC(Programmable Logic Controller)控制器的中子束线开关控制系统设计和实现。该系统主要用于散裂中子源多功能反射谱仪,以PLC为控制核心,以步进电机为驱动部件,配以高精度圆光栅进行位置反馈,实现中子束线开关在大负载下的高精度定位。针对中子束线开关的工作位置的重要性和工作环境,对该系统的关键部件进行冗余设计,侧重防护检查和错误处理等,保证其安全可靠稳定运行。模拟测试结果表明,系统能安全处理各类错误状况,长时间稳定工作,空载条件下的系统重复定位精度达到16.2″,满足设计要求。Background： The Multi-purpose Reflectometer （MR） is one of the three spectrometers in the first-phase construction of the China Spallation Neutron Source （CSNS）. The neutron beam line switch plays an important role in MR of the neutron beam. Purpose： This study aims to design high precision and high reliability switching control of the neutron beam line in MR that guarantees the security of operators and devices. Methods： A programmable logic controller （PLC） is employed as kernel processor, a step motor as driving component, and a high precision circular grating for position-feedback. Redundancy of the protective design and error handling is taken to ensure that the system is working steadily and safely. Results： Simulation test showed that the system can deal with error condition safely and maintain a stable running. A repeat positioning accuracy of 16.2″ is achieved during the no load test. Conclusion： The results of tests show that the design of our neutron beam line switch control system can satisfy the experiment requirements in MR.

关 键 词：PLC控制器 中子束线开关 高精度 

分 类 号：TL8[核科学技术—核技术及应用]