Theoretical Studies of a Switched Inertance Hydraulic System in a Four-Port Valve Configuration
Theoretical Studies of a Switched Inertance Hydraulic System in a Four-Port Valve Configuration
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四通阀配置中的切换惯性液压系统的理论研究
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Huayong Yang
中科院分区：
文献类型：
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作者：
N. Johnston;Min Pan;A. Plummer;A. Hillis;Huayong Yang
开关惯性液压系统(SIHS)可以通过数字控制技术实现压力或流量的有效升降。本文建立了四通高速开关阀结构中SIHS的分析模型，研究了系统的特性和性能。利用这些模型，可以有效和详细地估计和研究流动响应、系统特性和效率。利用数值模拟模型对分析模型进行了验证。结果表明，所建模型准确可靠，为了解四端口开关液压系统的特性和趋势提供了一条很有前途的途径。从系统功率损耗的角度对三通阀和四通阀的结构进行了讨论和比较。研究发现，四端口结构具有较高的损耗，但提供了更大的控制灵活性。
A switched inertance hydraulic system (SIHS) can provide an efficient step-up or step-down of pressure or flow rate by using a digital control technique. In this article, analytical models of a SIHS in a four-port high-speed switching valve configuration are proposed, and system characteristics and performance are studied. Using these models, the flow responses, system characteristics and efficiency can be estimated and investigated effectively and in detail. Numerical simulation models are used in validation of the analytical models. Results show that the models are accurate and reliable, and give a very promising way to understand the characteristics and trend of a four-port switched hydraulic system. A discussion and comparison is included of the three-port valve and four-port valve configurations, in terms of system power loss. It is found that the four-port configuration has higher losses, but provides greater control flexibility.