Theoretical and Experimental Studies of a Switched Inertance Hydraulic System in a Four-Port High-Speed Switching Valve Configuration
Theoretical and Experimental Studies of a Switched Inertance Hydraulic System in a Four-Port High-Speed Switching Valve Configuration
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DOI：
10.3390/en10060780
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发表时间：
2017-06
期刊：
影响因子：
3.2
通讯作者：
Min Pan;A. Plummer;Abdullah El Agha
中科院分区：
文献类型：
--
作者：
Min Pan;A. Plummer;Abdullah El Agha
开关惯性液压系统（SIHS）是一种新型的高带宽、高能效的数字装置，它可以通过不依赖节流和功率耗散的方式调节或控制流量和压力。SIHS可以通过使用数字控制信号来提供压力或流速的有效升压或降压。在本文中，分析模型的SIHS在四端口高速开关阀配置，系统动力学和性能进行了理论和实验研究。通过与实验和数值模拟的比较，验证了所建模型的有效性和准确性。四端口配置与三端口配置进行了比较，并且得出结论，对于相同尺寸的阀，四端口配置的效率较低，但提供了双向控制能力。由于双向控制是一种常见要求，因此这对高效数字液压技术的发展做出了重要贡献。
The switched inertance hydraulic system (SIHS) is a novel high-bandwidth and energy-efficient digital device which can adjust or control flow and pressure by a means that does not rely on throttling the flow and dissipation of power. An SIHS can provide an efficient step-up or step-down of pressure or flow rate by using a digital control signal. In this article, analytical models of an SIHS in a four-port high-speed switching valve configuration are proposed, and the system dynamics and performance are investigated theoretically and experimentally. The flow responses, system characteristics, and power consumption can be predicted effectively and accurately by using the proposed models, which were validated by comparing with experiments and with numerical simulation. The four-port configuration is compared with the three-port configuration, and it is concluded that the former one is less efficient for valves of the same size, but provides a bi-direction control capability. As bi-direction control is a common requirement, this constitutes an important contribution to the development of efficient digital hydraulics.