| 主动先导级控制的电液比例流量阀建模与仿真 |
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| 引用本文： | 孟宏君,秦强.主动先导级控制的电液比例流量阀建模与仿真[J].液压与气动,2019,0(2):1-6. |
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| 作者姓名： | 孟宏君 秦强 |
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| 作者单位： | 1. 山西大学自动化系， 山西太原030006； 2. 西安交通大学电子与信息工程学院， 陕西西安710049 |
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| 基金项目： | 国家自然科学基金青年基金(51605321)；山西省自然科学基金青年基金（201701D221144） |
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| 摘 要： | 高精度电液比例流量阀是很多重大机械装备中电液控制系统的核心部件,但采用压差补偿器或流量传感器控制流量,会降低阀的通流能力,增加系统功率损失和发热。因此,提出利用电机驱动液压泵作为先导级,连接Valvistor主阀,构造新的高精度电液比例流量阀,使主阀流量与先导流量成正比,其无论压差大小、正负皆可输出稳定的先导流量,达到提高流量阀的低压可控性和动态响应特性的目的。建立了新电液比例流量阀的数学模型,并建立其AMESim模型,对该阀的静动态特性的影响进行计算仿真分析,为进一步优化新电液比例流量阀结构提供依据。
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| 关 键 词： | Valvistor阀 比例流量控制阀 流量补偿 电液控制 |
| 收稿时间： | 2018-12-10 |
Modeling and Simulation of Electro-hydraulic Proportional Flow Valve Controlled by Active Pilot Stage |
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| MENG Hong-jun,QIN Qiang.Modeling and Simulation of Electro-hydraulic Proportional Flow Valve Controlled by Active Pilot Stage[J].Chinese Hydraulics & Pneumatics,2019,0(2):1-6. |
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| Authors: | MENG Hong-jun QIN Qiang |
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| Affiliation: | 1. Department of Automation, Shanxi University, Shanxi, Taiyuan030006;
2. School of Electronics and Information Engineering, Xian Jiaotong University, Shaanxi, Xian710049 |
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| Abstract: | High-precision electro-hydraulic proportional flow valve is a core component of many major machinery and equipment in the electro-hydraulic control system. But nowadays used pressure compensator or flow sensor controls flow, the valve will reduce the flow capacity, increase system power loss and cause serious system heat. In order to improve these phenomena, we propose to use motor-driven hydraulic pump module connected valvistor valve to construct the structure of new high-precision electro-hydraulic proportional flow valve, The main valve flow proportional to the Pilot flow, no matter how big or small, plus or minus pressure difference, it can output the premise of stable flow to improve flow valve of the purpose of the low voltage control and dynamic response. This paper establishes the static mathematical model of the new principle valve, and establishes the AMESim dynamic model of the new principle valve, and calculates and simulates the influence of the static and dynamic characteristics of the new principle valve, providing the basis for further optimizing the valve structure of the new principle. |
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| Keywords: | Valvistor valve proportional flow control valve flow compensation electro-hydraulic control |
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