| 大功率液压系统压力瞬变研究 |
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| 引用本文： | 杨启真,王运赣,黄树槐.大功率液压系统压力瞬变研究[J].华中科技大学学报(自然科学版),1991(Z3). |
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| 作者姓名： | 杨启真 王运赣 黄树槐 |
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| 作者单位： | 华中理工大学机械工程二系
(杨启真,王运赣),华中理工大学机械工程二系(黄树槐) |
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| 基金项目： | 国家自然科学基金,高等学校博士点专项科研基金的资助 |
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| 摘 要： | 本文提出一种将理论分析、数字模拟、试验研究相结合,进行大功率液压系统压力瞬变研究的方法,并用快锻液压机的压力瞬变分析实例,证明了该方法的有效性,得到了若干有实用价值的结论.
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| 关 键 词： | 液压系统 压力瞬变 建模 数字仿真 数据处理 |
Pressure Transients in High-Power Hydraulic Systems |
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| Fang Qizhen,Wang Yungan Huang Shuhuai.Pressure Transients in High-Power Hydraulic Systems[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1991(Z3). |
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| Authors: | Fang Qizhen Wang Yungan Huang Shuhuai |
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| Abstract: | There exists in general pressure transient in a high-power hydraulic system with high pressure and large flow. How to limit the transient pressure is crucial to guaranteeing" normal system operation and good dynamic performance. A new transient analyzing method is proposed, in which the pipelines are described as a model with distributed parameters and the characteristic method is used to solve it while the main valve distributor and actuating mechanism are expressed as a model with lumped parameters and analyzed with the Runge-Kutta method. The two models are hten integrated by boundary conditions to give a mathematical model for the complete system. The numerical solution of pressure surges is obtained by digital simulation. A pressure surge test on a l 000 kN high-speed hydraulic forging press under varying working conditions has been carried out and some parameters have been measured and analyzed. Values of calculation are compared with measured ones. |
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| Keywords: | Hydraulic system Pressure transient Modelling Digital simulation Data processing |
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