一种双边传感型电磁感应式直线位移传感器  

Research on Inductive Linear Displacement Sensor with Bilateral Sensing Units

作　　者：谷星莹 汤其富[1] 彭东林[1] 翁道纛 GU Xing ying;TANG Qi fu;PENG Dong lin;WENG Dao dao(Chongqing University of Technology,Engineering Research Center of Mechanical Testing Technology and Equipment,Ministry of Education,Chongqing 400054,China)

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400054

出　　处：《仪表技术与传感器》2020年第4期1-5,10,共6页Instrument Technique and Sensor

基　　金：国家自然科学基金青年科学基金项目(51605062);重庆市教育委员会科学技术研究项目(KJ1709191);重庆市研究生重点科研创新项目(CYS18306)。

摘　　要：由于现有直线位移传感器的动尺一般只在定尺一侧安装,所以传感器的测量性能不免受动尺与定尺间的间隙变化、平行度差等装配问题的影响。为了使传感器达到较高的测量性能,传感器的安装和运行轨迹往往需要满足苛刻的要求。针对该问题,文中开展了一种双边传感型电磁感应式直线位移传感器的研究。该传感器采用2个动尺实现了双边同时传感,以求减弱装配问题对传感器测量性能的影响。介绍了传感器的仿真实验和样机实验。仿真实验结果显示,双边传感型传感器输出的信号质量明显优于单边传感型传感器。样机的实验结果显示,传感器在双边结构下的测量误差比单边结构下小40%。文中提出的双边传感结构不仅弥补了单边传感结构的不足,而且为直线位移传感器的研究提供了一种新思路。Since the movers of current linear displacement sensors are generally installed only on one side of the stator,the measurement performance of the sensor is inevitably affected by assembly problems such as gap change and parallelism between the mover and the stator.In order to achieve high measurement performance,the installation and running track of the sensor often need to meet the demanding requirements.To resolve the above mentioned problem,this paper presented an inductive linear displacement sensor with bilateral sensing units.In order to reduce the assembly impact on the measurement performance of the sensor,two movers were used to achieve simultaneous bilateral sensing.The simulation experiment and prototype experiment of the sensor were introduced in this paper.The simulation experiment results show that the output signal quality of the bilateral sensor is better than that of the unilateral sensor.The experimental results of the prototype show that the measurement error of the sensor with the bilateral structure is 40% smaller than that with the unilateral structure.The bilateral sensing structure proposed in this paper not only makes up for the shortcomings of the single-sided sensing structure,but also provides a new idea for the study of linear displacement sensors.

关 键 词：电磁感应 直线位移 传感器 双边传感 

分 类 号：TP214[自动化与计算机技术—检测技术与自动化装置]