CSNS微小角中子散射谱仪运动控制系统样机  

Prototype motion control system for CSNS very small angle neutron scattering instrument

作　　者：何泳成[1,2,3] 肖松文 王广源[1,2] 金大鹏 张玉亮[1,2,3] 吴煊 薛康佳[1,2] 朱鹏 王林[1,2,3] 左太森 程贺[1,2,3] HE Yongcheng;XIAO Songwen;WANG Guangyuan;JIN Dapeng;ZHANG Yuliang;WU Xuan;XUE Kangjia;ZHU Peng;WANG Lin;ZUO Taisen;CHENG He(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Spallation Neutron Source Science Center,Dongguan 523803,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]散裂中子源科学中心,东莞523803 [3]中国科学院大学,北京100049

出　　处：《核技术》2022年第8期18-24,共7页Nuclear Techniques

基　　金：国家自然科学基金大科学装置联合基金项目(No.U1932161);广东省科技厅微小角中子散射谱仪建设项目资助。

摘　　要：微小角中子散射(Very Small Angle Neutron Scattering,VSANS)谱仪是结构校准的有力工具。为了保证中国散裂中子源(China Spallation Neutron Source,CSNS)VSANS谱仪的运动部件满足重复定位精度优于±2μm的要求,设计了基于实验物理及工业控制系统(Experimental Physics and Industrial Control System,EPICS)软件架构的运动控制系统方案,并搭建了相应的运动控制系统样机。该样机使用步进电机、绝对式光栅和Beckhoff嵌入式控制器,实现了对平移台位置的全闭环控制。测试结果表明:该样机的重复定位精度优于±2μm,且具有稳定可靠性高的特点,很好地满足了CSNS VSANS谱仪的需要。[Background]Very small angle neutron scattering(VSANS)instrument is a powerful tool for structure calibration.[Purpose]This study aims to ensure the repeat positioning accuracy is better than±2μm for the moving parts of VSANS instrument at China spallation neutron source(CSNS).[Methods]A prototype motion control system based on experimental physics and industrial control system(EPICS)software architecture was designed.The stepper motor was used to drive the movement of the displacement platform,the absolute optical encoder was applied to feedback of the real-time position of the displacement platform,and the Beckhoff embedded controller was employed to implement the full closed loop control of the position of the displacement platform.[Results&Conclusions]The test results show that the repeat positioning accuracy of this prototype motion control system is better than±2μm with high stability and high reliability,satisfying the needs of the VSANS instrument at CSNS.

关 键 词：中国散裂中子源 微小角中子散射谱仪 运动控制系统 实验物理及工业控制系统 

分 类 号：TL817[核科学技术—核技术及应用]