油气润滑ECT系统传感器设计
何伟，孙启国
（北方工业大学 机械与材料工程学院，北京 100144）
摘要：运用SolidWorks软件和COMSOL软件建立三维ECT管道模型，通过分析与比较传感器在空/满场状态下的电容值得到了三个结构参数（电极的张角、极板的长度、管道与屏蔽层的间隔）的优化范围，并定义了传感器电容响应率指标、对传感器性能进行了定量分析。在此基础上，基于正交实验的方法，以传感器性能综合评价函数OPT为目标，运用COMSOL软件和Design-Expert软件对上述三个结构参数进行了优化。研究结果表明：①当传感器结构参数为最佳参数组合时，函数OPT值为7.2087，与实际仿真获得的OPT值之间的相对误差为3.36%；②设计的传感器具有较均匀的灵敏度分布和较高的成像质量。
关键词：电容层析成像；传感器结构参数；优化设计；综合评价函数OPT
中图分类号：TP212.1 文献标志码：A doi：10.3969/j.issn.1006-0316.2019.03.013
文章编号：1006－0316 (2019) 03－0057－07
Design of Sensor in the Oil-Air Lubricating ECT System
HE Wei，SUN Qiguo
( College of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China )
Abstract：A three-dimensional ECT pipeline model was established employing SolidWorks software and COMSOL software. The optimized range of three structural parameters (the opening angle of the electrode, the length of the electrode, and the interval between the pipe and the shielding layer) was obtained by analyzing and comparing capacitance value in the state of empty field and full field. The capacitive responsivity of the sensor was defined to analyze the sensor performance quantitatively. And then, based on the orthogonal experiment method, the comprehensive evaluation function OPT of sensor performance is used to optimize the above three structural parameters employing COMSOL software and Design-Expert software. The experimental results show that the value of function OPT is 7.2087 when the sensor structural parameters are the optimal combination, and the relative error is 3.36% between the OPT value obtained by the actual simulation. The sensor designed exhibits better sensitivity distribution and higher image quality.
Key words：electrical capacitance tomography；sensor structural parameters；optimum design；comprehensive evaluation function OPT
———————————————
收稿日期：2018－09－25
作者简介：何伟（1995－），男，安徽滁州人，本科生，主要研究方向为油气润滑技术、电容层析成像；孙启国（1963－），男，北京人，博士，教授，主要研究方向为摩擦学与工业润滑技术、机械系统动力学及其控制。
- 上一篇：一种自导航物料转运车设计研究
- 下一篇：水洗对航空发动机性能影响分析
设为首页 | 加入收藏 | 免责条款
《机械》杂志版权所有 Copyright©2008-2012 Jixiezazhi.com All Rights Reserved
电话：028-85925070 传真：028-85925073 E-mail：jixie@vip.163.com
地址：四川省成都锦江工业开发区墨香路48号 邮编：610063
Powered by PageAdmin CMS