| 气缸差压法检测建模和效率分析 |
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| 引用本文： | 石 岩,等.气缸差压法检测建模和效率分析[J].液压气动与密封,2014(4):32-35. |
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| 作者姓名： | 石 岩 等 |
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| 作者单位： | [1]北京航空航天大学自动化科学与电气工程学院,北京100083 [2]国家气动产品质量监督检验中心,浙江奉化315500 |
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| 基金项目： | 国家质检总局质量技术监督技改技装专项（课题名称：气缸综合性能自动化检测试验台开发,项目编号：2013zjjg110）;宁波市科技服务业示范项目（课题名称：气缸性能在线检测系统的研制,项目编号：201201F1000041） |
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| 摘 要： | 该文建立了差压气密性检测的系统模型,分析了充气和测量阶段的检测系统同外部的能量交换过程。基于理想的气体状态方程和能量守恒定律,完成了标准腔和待测腔温度和压力微分方程的建立。根据建立的方程对非对称基准物差压检测过程的容积差异进行仿真分析。结果表明,两容腔的容积差异对导致两腔间温度变化不同步现象,并影响差压信号,对检测效率造成较大制约。
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| 关 键 词： | 气缸 压差法 数学建模 检测 效率分析 |
Modeling and Efficiency Analysis of Differential Pressure Leak Detection System for Cylinder |
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| SHI Yan,LU Bo,ZHENG Zhi-jian,TONG Xiao-meng,CAI Mao-lin.Modeling and Efficiency Analysis of Differential Pressure Leak Detection System for Cylinder[J].Hydraulics Pneumatics & Seals,2014(4):32-35. |
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| Authors: | SHI Yan LU Bo ZHENG Zhi-jian TONG Xiao-meng CAI Mao-lin |
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| Affiliation: | 1.School of Automation Science and Electrical Engineering,Beihang University, Beijing lO0083,China; 2.National Quality Supervision and Inspection Center of Pneumatic Products, Fenghua 315500,China) |
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| Abstract: | The systematic model of differential pressure leak detection was established in this paper, and the energy exchange process between the detecting system and external environment in the charging and measuring phase. Based on the ideal gas state equation and the conservation of energy, the establishment of the temperature and pressure differential equation of standard and test chamber was finished. Simulation analysis on the volume difference during the asymmetrical reference differential detection is carried out according to the established equation. The results showed that, the volume difference of the two chambers lead to the temperature variation of the two chambers are not synchronous, and influence the differential pressure signal, finally resulting to the large restriction on the detection efficiency. |
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| Keywords: | cylinder differential pressure method mathematical modeling detection efficiency analysis |
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