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基于鲁棒观测器的船舶舵机伺服系统故障检测
  • ISSN号：1671-4512
  • 期刊名称：华中科技大学学报(自然科学版)科技大学
  • 时间：2015
  • 页码：101-106
  • 分类：TH137.51[机械工程—机械制造及自动化]
  • 作者机构：[1]浙江大学流体动力与机电系统国家重点实验室,杭州310027, [2]中航工业金城南京机电液压工程研究中心,南京211106
  • 相关基金：国家自然科学基金（51275450,51221004）; 国家“973”计划（2014CB046403）
  • 相关项目：机电液系统基础研究
作者： 徐巧宁|喻峰|周华|杨华勇|
关键词： 航空作动器, VL密封, 混合润滑模型, 多场耦合, 有限体积法, aircraft cylinder, VL seal, mixed lubrication model, multi-field coupling, finite volume method
中文摘要：

针对航空作动器不同压力、温度以及作动速度的工作环境,以Trelleborg公司Turcon VL密封为代表,利用混合润滑理论对其性能进行分析,揭示机载工况对航空作动器密封性能的影响规律。建立了基于混合润滑理论的宏观与微观多场耦合模型,包括：考虑空化及流动因子的Reynolds方程油膜模型、Greenwood-Williamson（G-W）的微观接触模型以及Fourier的传热模型。通过有限体积法求解,分析不同压力下宏观接触压力、微观接触压力以及油膜压力分布特点。研究结果表明：随流体压力增大,泄漏量与摩擦力都近似线性增大;在25℃时无泄漏,而温度升高至135℃时产生少许泄漏;随作动速度增大,摩擦力减小但泄漏量增大。

英文摘要：

Aimed to investigate the influences of working conditions such as different pressures,temperatures and velocities on the performance of the seal of the aircraft cylinder,the Turcon VL seal from Trelleborg AB was analyzed based on the mixed lubrication theory. The macro and micro multi-field coupling model based on the mixed lubrication theory was built,which mainly includes fluid model with cavitation and fluid factors in Reynolds equation,micro contact model of Greenwood-Williamson（ G-W） and heat transfer model of Fourier. By computing the model with finite volume method,the characteristics of macro contact pressure,micro contact pressure and oil pressure distribution under different fluid pressures were analyzed. The research results show that the seal leakage and friction increases nearly linearly with the fluid pressure increasing,the seal has no leakage at 25℃ but has some at 135℃,and the seal friction decreases but leakage increases with the cylinder velocity increasing.

同期刊论文项目
机电液系统基础研究
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期刊信息
  • 《华中科技大学学报：自然科学版》
  • 中国科技核心期刊
  • 主管单位:中华人民共和国教育部
  • 主办单位:华中科技大学
  • 主编：丁烈云
  • 地址：武汉珞喻路1037号
  • 邮编：430074
  • 邮箱：hgxbs@mail.hust.edu.cn
  • 电话：027-87543916 87544294
  • 国际标准刊号：ISSN：1671-4512
  • 国内统一刊号：ISSN：42-1658/N
  • 邮发代号:38-9
  • 获奖情况:
  • 全国优秀科技期刊,首届国家期刊奖,第二届全国优秀科技期刊评比一等奖,中国期刊方阵“双效”期刊
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  • 被引量:21013