基于嵌入式时栅技术的齿条位移检测单元  

Rack Displacement Detection Unit Based on Embedded Time-grating Technology

作　　者：徐志伟 彭东林[1] 付敏[1] 陈锡侯[1] 王阳阳[1] XU Zhi-wei;PENG Dong-lin;FU Min;CHEN Xi-hou;WANG Yang-yang(Engineering Research Center of Mechanical Testing Technology and Equipment,Ministry of Education, Chongqing University of Technology, Chongqing Key Laboratory of Time Grating Sensing and Advanced Testing Technology,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,时栅传感及先进检测技术重庆市重点实验室,重庆400054

出　　处：《仪表技术与传感器》2018年第11期39-42,46,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(51475063,51675071);重庆市科技研发基地能力提升计划(cstc2014pt-sy40002)。

摘　　要：齿条传动中,由于检测元件安装困难使得齿条位移检测不易实现、传动精度难以有效提高。文中提出一种基于嵌入式时栅技术的齿条位移检测单元,该单元由非等齿距的测头与齿条自身组成,直接实现齿条的位移检测。文中针对该方法的实现开展了有限元仿真分析与优化、原理样机试制,实验验证等工作。实验结果表明,在300 mm范围内齿条位移检测精度达到±1.3μm。Rack transmission is an important form of mechanical motion,and its transmission accuracy is increasingly required.In rack transmission,the detection of rack displacement is difficult to realize and transmission accuracy is difficult to improve because of the difficult installation of detection components.This paper presented a rack displacement detection unit based on embedded time grid technology.The unit consisted of the probe with non-equal tooth spacing and the rack itself,the displacement detection of rack was realized directly.In this paper,finite element simulation analysis and optimization,prototype test and experimental verification were carried out.The experiment results show that the measurement accuracy of the unit reaches±1.3μm in the range of 300 mm.

关 键 词：齿条位移检测单元 嵌入式时栅 不等齿距测头 

分 类 号：TP707[自动化与计算机技术—检测技术与自动化装置]