二维自感知电容式角位移测量系统研究

发布时间：2018-03-17 13:05

本文选题：电容式角位移　切入点：比例法　出处：《合肥工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：角度是机械行业中的重要几何参数之一,它的准确度直接影响着产品的质量与寿命,现有许多类型的角位移测量传感器,往往都是单一角位移量测量且需要把角位移传递到相应传感器中,不能有效实现二维方向上的角位移同时实时测量。本文设计的自感知二维角位移传感器,即可为大尺寸测量的空间位姿信息获取提供有效的角位移测量信息,也可以为具有加持对中瞄准的应用需求提供辅助保障。该测量系统具有低成本、自感知二维角位移、测量精度较高等特点。论文主要研究工作包括：1.采用了比例式电容角位移测量原理作为传感器整体方案设计,并分析计算了动片浮地和接地对电容测量的影响,采甩八瓣式的发射极板以及动片接地的方案,可实现180°范围角度测量。2.设计了具两种电容敏感机械结构,分别是动片利用过盈方式实现动片固定和利用约束定位方式实现动、静极板固定。3.设计了电容角位移传感硬件电路,包括传感激励模块、信号处理模块、信号采集、液晶显示和通信模块,并完成了测量软件编制。4.搭建了实验平台,对电路工作特性进行了标定实验,并对所设计的电容式角位移传感器进行了角度比对实验。
[Abstract]:Angle is one of the important geometric parameters in mechanical industry. Its accuracy directly affects the quality and life of products. It is often a single angular displacement measurement and needs to transfer the angular displacement to the corresponding sensor, which can not effectively realize the simultaneous real-time measurement of the angular displacement in the two-dimensional direction. The self-sensing two-dimensional angular displacement sensor is designed in this paper. It can not only provide effective angular displacement measurement information for the acquisition of spatial position and attitude information of large scale measurement, but also provide auxiliary support for the application requirement of aiming with the aid pair. This measuring system has low cost and self-sensing two-dimensional angular displacement. The main research work in this paper includes: 1. The principle of proportional capacitance angular displacement measurement is adopted as the overall design of sensor, and the influence of floating ground and grounding on capacitance measurement is analyzed and calculated. Two kinds of capacitance-sensitive mechanical structures are designed, which are the moving-plate with eight flaps and the earthing scheme of the movable plate, which can realize the angle measurement in 180 掳range. Two kinds of capacitance-sensitive mechanical structures are designed, which are the moving-plate fixing by interference mode and the moving-plate using constrained positioning mode. The hardware circuit of capacitance angular displacement sensing is designed, including sensor excitation module, signal processing module, signal acquisition module, liquid crystal display module and communication module. The calibration experiment is carried out on the working characteristics of the circuit and the angle comparison experiment of the designed capacitive angular displacement sensor is carried out.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP212;TH712

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