| 气压伺服系统的建模与特性 |
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| 引用本文： | 王燕波,王祖温,杨庆俊,包钢.气压伺服系统的建模与特性[J].吉林大学学报(工学版),2009,39(5). |
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| 作者姓名： | 王燕波 王祖温 杨庆俊 包钢 |
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| 作者单位： | 1. 哈尔滨工业大学机电学院,哈尔滨,150080
2. 哈尔滨工业大学机电学院,哈尔滨,150080;大连海事大学机电与材料工程学院,辽宁,大连,116026 |
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| 基金项目： | 国家自然科学基金项目(50375034);;211学科建设基金项目(CAAZ92102001) |
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| 摘 要： | 研究了比例流量阀静态和动态特性。通过理论分析和实验研究,得出了临界压力比随阀开口面积呈先增大后减小的非线性规律变化,其值在0.17到0.38之间。通过实验研究,计算出流量系数随阀开口面积呈非线性变化的规律,其值在0.55到0.77之间。采用正弦扫频激励信号和直接测量阀芯位移方法得出了阀的频率特性,随着输入信号幅值的增大,阀的带宽减小,而供气压力改变对阀带宽几乎没有影响。采用集中参数模型描述了气缸内气体与气缸壁以及气缸壁与外界的传热过程,推导出气体温度微分方程,建立了气缸内气体热力学模型。最后,进行了仿真和实验研究,仿真数据与实验数据吻合得较好。
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| 关 键 词： | 传动与控制 气压伺服系统 建模 比例流量阀 热力学过程 |
Modeling and characteristics of pneumatic servo system |
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| WANG Yan-bo,WANG Zu-wen,YANG Qing-jun,BAO Gang.Modeling and characteristics of pneumatic servo system[J].Journal of Jilin University:Eng and Technol Ed,2009,39(5). |
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| Authors: | WANG Yan-bo WANG Zu-wen YANG Qing-jun BAO Gang |
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| Affiliation: | 1.School of Mechatronics;Harbin Institute of Technology;Harbin 150080;China;2.College of Electromechanics and Materials Engineering;Dalian Maritime University;Dalian 116026;China |
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| Abstract: | The static and dynamic characteristics of the pneumatic proportional flow-rate control valve were studied.It was found that the variation of the critical pressure ratio versus the valve opening is non-linear,it increases at first and then decreases,and the ratio ranges from 0.17 to 0.38.The discharge coefficient was calculated with the help of Sanville flow formula by measuring the flow-rate through the valve at different openings,and the coefficient ranges from 0.55 to 0.77.The relationship between the dis... |
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| Keywords: | turn and control pneumatic servo system modeling proportional flow rate control valve thermodynamic process |
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