磁控位移传感器的研究与应用

发布时间：2018-04-12 23:16

本文选题：磁控 + 位移传感器　；参考：《太原理工大学》2014年硕士论文

【摘要】：本课题是国际科技合作计划项目“无人值守工作面液庄支架电液控制系统的研制”(0S2013ZR0493)子课题和山西省重大专项科技项目“全自动国产无人综采工作面技术装备研发”(20111101024)的重要组成部分,是针对目前矿井下液压支架电液控制系统严重依赖国外位移传感器的现状提出的。煤矿井下综采工作面无人值守自动控制系统是煤炭工业自动化装备的核心,而此系统的关键就是液压支架电液控制系统。液压支架推移是否到位,决定着采煤机和刮板运输机是否能够连续、可靠地工作。安装于液压支架推移油缸中的位移传感器负责实时检测推移油缸的位移,并将位移信号转换成电压信号传送至液压支架架间控制器,最终达到控制液压支架做出准确推移动作的目的。因此,位移传感器在液压支架电液控制系统中起着举足轻重的作用。然而目前我国位移传感器研制技术还很不完善,在传感器检测精度和分辨率方面与西方国家仍有很大差距,因此开发具有自主知识产权并应用于液压支架推移油缸的位移传感器具有重要的现实意义。本文旨在研究开发一种应用于液压支架推移油缸的位移传感器。通过磁场仿真,优化传感器磁环的结构。确定了非接触式测量方法,具有精度高、稳定性强、结构简单、安装方便、抗污染性能优越等优点。主要研究内容如下：在查阅大量国内外相关文献的基础上,认真分析了当前位移传感器的发展现状和发展趋势。通过对比各种位移传感器的特性,并结合液压支架的结构和工作方式,制定了磁控位移传感器的总体方案。基于等效磁荷理论,分析了磁环的磁场分布规律,利用Matlab软件绘制计算结果曲线图,并利用Ansoft Maxwell仿真软件对计算结果进行验证。根据磁控位移传感器的设计方案,选择其需要的干簧管、永磁材料以及传感器外壳所需要的不锈钢材质、电缆等,并设计制作出了磁控位移传感器样品。实验验证了该磁控位移传感器的有效性和可行性。设计了一套磁控位移传感器检测装置,用于测试磁控位移传感器的技术性能。该装置由直线滑台、驱动器、控制电路及显示屏组成。控制电路向驱动器发送脉冲信号,驱动器驱动直线滑台上的步进电机动作,直线滑台上的滑块带动磁控位移传感器的磁环运动,显示屏实时显示传感器的输出信号。对磁控位移传感器从线性度、误差、时效稳定性、湿度稳定性、温度稳定性等方面进行性能测试。实验室和现场试验结果表明：磁控位移传感器运行稳定、测量精度高、线性度好,反映出传感器能够准确稳定地测量磁环的位移。该位移传感器其结构简单,安装方便,抗污染性能好,是一种适用于液压支架推移油缸中的位移传感器。
[Abstract]:This subject is a sub-project of the international scientific and technological cooperation project "the development of electro-hydraulic control system of hydraulic support in unattended working face" and the major scientific and technological project of Shanxi Province, "Technical equipment research of fully automatic unmanned fully mechanized mining face".An important part of the "Fat" 20111101024,Aiming at the present situation that the electro-hydraulic control system of hydraulic support under mine depends heavily on foreign displacement sensors.The unattended automatic control system in fully mechanized coal mining face is the core of the automatic equipment of coal industry, and the key of this system is the electro-hydraulic control system of hydraulic support.Whether the hydraulic support is in place or not determines whether the shearer and scraper conveyor can work continuously and reliably.The displacement sensor installed in the bed oil cylinder of the hydraulic support is responsible for detecting the displacement of the bed oil cylinder in real time and converting the displacement signal into the voltage signal to the interframe controller of the hydraulic support.Finally, to control the hydraulic support to make the accurate movement of the purpose.Therefore, displacement sensor plays an important role in hydraulic support electro-hydraulic control system.However, at present, the development technology of displacement sensor in China is still not perfect, and there is still a big gap between China and the western countries in the precision and resolution of sensor detection.Therefore, it is of great practical significance to develop a displacement sensor with independent intellectual property rights and be applied to the displacement sensor of hydraulic support.The purpose of this paper is to develop a displacement sensor for hydraulic support.The structure of the sensor ring is optimized by magnetic field simulation.The non-contact measurement method has the advantages of high precision, strong stability, simple structure, convenient installation and excellent anti-pollution performance.The main contents of the study are as follows:On the basis of consulting a large number of related literatures at home and abroad, the present development status and trend of displacement sensors are analyzed.By comparing the characteristics of various displacement sensors and combining with the structure and working mode of the hydraulic support, the overall scheme of the magnetic displacement sensor is established.Based on the theory of equivalent magnetic charge, the distribution of magnetic field of magnetic ring is analyzed. The curve of calculation result is drawn by Matlab software, and the calculation result is verified by Ansoft Maxwell simulation software.According to the design scheme of magnetically controlled displacement sensor, the dry spring tube, permanent magnet material, stainless steel material and cable needed for sensor shell are selected, and the magnetically controlled displacement sensor sample is designed and manufactured.The effectiveness and feasibility of the magnetically controlled displacement sensor are verified by experiments.A set of magnetic displacement sensor detection device is designed to test the technical performance of magnetic displacement sensor.The device consists of a linear slide table, a driver, a control circuit and a display screen.The control circuit sends the pulse signal to the driver, the driver drives the step motor action on the linear slider, the slider on the linear slider drives the magnetic loop motion of the magnetically controlled displacement sensor, and the display screen displays the output signal of the sensor in real time.The linearity, error, aging stability, humidity stability and temperature stability of the magnetically controlled displacement sensor are tested.The results of laboratory and field tests show that the magnetic displacement sensor has the advantages of stable operation, high measuring accuracy and good linearity, which reflects that the sensor can accurately and stably measure the displacement of the magnetic ring.The displacement sensor has the advantages of simple structure, convenient installation and good anti-pollution performance.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP212

【参考文献】