精密位移测控系统的设计  

Design of precision displacement measurement and control system

作　　者：熊俊俏[1] 郝毫毫[1] 刘增华[1] 

机构地区：[1]武汉工程大学电气信息学院,湖北武汉430074

出　　处：《武汉工程大学学报》2009年第9期59-61,共3页Journal of Wuhan Institute of Technology

摘　　要：基于电磁感应原理,完成了精密的位移测控系统的设计与制作,系统由文氏振荡电路和差分放大器、螺线管驱动电路及感应电路、数据采集与处理、显示与控制系统组成.磁芯位移转化为感应电路次级电压的变化,经精密有源整流电路整流,单片机进行数据采集和处理,获得位移方向和位移大小,系统还可以根据需要控制电机运转实现精密的位移控制.经过实际测试,位移测量和控制精度达到0.1 mm.A precision Displacement measurement system is designed based on the principle of electromagnetic induction. The system consists of the Wien-bridge oscillating circuit, difference amplifier.Solenoid drive circuits and induced circuit.data acquisition and processing, display and control circuits. The system transforms the magnetic core displacement into the alteration of the secondary voltage of the induced circuit, and rectified circult with the precision active rectification function. Finally Data acquisition and processing are achieved by Single-chip Computer, and the direction and size of the displacement are obtained. The system also can be used to control the Motor running, to achieve the precision displacement control according to the requirement. Test results demonstrate that, the accuracy of the Displacement measurement and control could reach down to 0.1mm.

关 键 词：电磁感应 差分放大 位移控制 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]