基于ARM和FPGA的三维精密定位控制系统  

Three-coord inate Precision Location C on tro l System B ased on ARM and FPGA

作　　者：陈锡侯[1] 陈涛[1] 彭东林[1] 张天恒[1] 刘小康[1] 

机构地区：[1]重庆理工大学机械检测技术与装备教育部工程研究中心,重庆400050

出　　处：《仪表技术与传感器》2011年第5期59-62,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(50805150)

摘　　要：针对基于步进电机驱动三维定位机械载物工作台的定位精度、定位速度问题,该设计在低成本的步进电机驱动的机械载物工作台的基础上,建立以光栅尺为测量反馈元件的全闭环系统,解决了ARM和FPGA的响应速度瓶颈问题,并通过时间细分克服了采用步进电机进行微步驱动时易出现的"爬行"和步距角过大的现象,实现了大行程、高速度、高精度(±1μm)的三维定位,并将其应用到三坐标测量机上。该系统硬件结构简单、可靠性强;并且可以灵活的实现定制应用。The trad itional autom atic location m ethod used step-motor cannot ach ieve h igh-speed and h igh-prec ision positio-n ing.A three-coord inate prec ision location controlling system was designed based on ARM and FPGA.Th is design estab lished a whole c losed-loop control system based on a step-motor driven m echan ic l stage.It used grating as the feedback m easurem ent ele-m ent,solved the ARM and FPGA s response speed bottleneck prob lem s,overcam e the craw ling phenom enon by using tim e-subd ivi-sion,and ach ieved a large range,h igh-speed and h igh-prec ision position ing.The system has the features such as simp lified hardware structure,stab le and reliab le perform ance.It can be ach ieved flexib ly at custom-m ade app lications.

关 键 词：嵌入式微处理器 现场可编程逻辑阵列 精密定位 光栅尺 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]