寄生式时栅传感器测头安装状态测量方法研究

发布时间：2018-05-04 03:15

本文选题：寄生式时栅 + 传感测头安装状态　；参考：《重庆理工大学》2017年硕士论文

【摘要】：时栅是近几年发展起来的一类新型位移传感器,通过建立双坐标系巧妙的运用时间测量空间。其中,寄生式时栅角位移传感器是时栅团队针对末端难以安装传感器而研发的新产品,采用旁置安装的方式实现对末端件(本课题以齿轮为研究对象)的旋转角度进行测量。寄生式时栅具有精度高、成本低、体积小、质量轻、抗强干扰等优点,在极端和特殊环境的应用具有极大潜力。寄生式时栅角位移传感器采用旁置的方式安装传感测头,在带来方便的同时也带来了安装问题。其原理上是利用被测齿轮的齿槽等分性,齿轮旋转时实现磁导调制来完成角位移到电行波的转换,进一步由后续信号处理系统解算出角位移值。因此,当传感测头的安装状态发生变化时,会不同程度的改变磁导调制的规律,影响传感器的性能给角位移测量带来误差。本文作者从理论推导、仿真分析和实验验证三个方面对寄生式时栅传感测头安装状态测量方法进行研究,取得了如下几个方面的成果:(1)深入研究寄生式时栅的原理和结构,分析寄生式时栅传感测头安装状态变化对传感器性能的影响;(2)从理论上分析寄生式时栅传感测头安装状态变化到传感单元感应信号的耦合过程,并推导出理论表达式;(3)借助MATLAB进行数值仿真,观察传感测头安装状态变化时传感单元感应信号变化的规律,并找出测量传感测头安装状态变化各个分量的方法;(4)利用有限元电磁仿真软件,对理论分析进行验证,确定了参考点的选择,并对设计的安装状态测量方法进行验证和优化;(5)搭建实验平台进行实验研究,分别对传感测头安装状态对传感器性能影响分析、参考点选择和传感测头安装状态测量的方法进行实验验证,并对验证结果进行分析讨论。研究结果表明,通过在传感测头的各个传感单元中嵌入独立的感应线圈,可以实现对寄生式时栅传感测头多自由度安装状态变化的分离测量。
[Abstract]:Time grating is a new type of displacement sensor developed in recent years. Among them, the parasitic time-grid angular displacement sensor is a new product developed by the time-grid team, which is difficult to install the sensor at the end. The method of side installation is used to measure the rotation angle of the end piece (this subject is gear as the research object). The parasitic time grid has the advantages of high precision, low cost, small volume, light weight, strong interference resistance and so on, so it has great potential in extreme and special environments. The parasitic time grating angular displacement sensor adopts side-mounted sensor probe, which not only brings convenience but also brings installation problems. In principle, the angle displacement is converted from angle displacement to electric traveling wave by using the tooth slot equipartition of the measured gear, and the magnetic conductance modulation is realized when the gear rotates, and the angle displacement value is further calculated by the subsequent signal processing system. Therefore, when the installation state of sensor probe changes, the law of magnetic conductance modulation will be changed in varying degrees, which will affect the performance of the sensor and bring errors to the measurement of angular displacement. In this paper, the author studies the method of measuring the installation state of parasitic time grating sensor probe from three aspects: theoretical derivation, simulation analysis and experimental verification. The results are as follows: 1) the principle and structure of parasitic time grating are studied in depth. The influence of the installation state of the parasitic time grating sensor probe on the sensor performance is analyzed. (2) the coupling process between the installation state of the parasitic time grid sensor probe and the sensor unit inductive signal is analyzed theoretically. In addition, the theoretical expression "Xian3" is deduced. By means of MATLAB, numerical simulation is carried out to observe the change of sensing unit's inductive signal when the installation state of sensor probe changes. And find out the method of measuring each component of sensor probe's installation state change. (4) by using finite element electromagnetic simulation software, the theoretical analysis is verified, and the selection of reference point is determined. The experimental research is carried out on the experimental platform to verify and optimize the measurement method of the installation state of the sensor probe, and the influence of the installation state of the sensor probe on the performance of the sensor is analyzed respectively. The selection of reference points and the method of measuring the installation state of sensor probe are verified experimentally, and the verification results are analyzed and discussed. The results show that by embedding an independent induction coil in each sensing unit of the sensor probe, the separation measurement of the multi-degree-of-freedom installation state of the parasitic time-grid sensor probe can be realized.
【学位授予单位】：重庆理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP212

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