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Investigation into the Independent Metering Control Performance of a twin spools valve with Switching Technology-controlled Pilot Stage

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Chinese Journal of Mechanical Engineering 2021年第5期34卷 226-242页

作者： Qi Zhong Huiming Bao Yanbiao Li Haocen Hong Bin Zhang Huayong Yang State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310023China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Ministry of Education&Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310023China

In hydraulic area,independent metering control(IMC)technology is an effective approach to improve system efficiency and control *** addition,digital hydraulic technology(DHT)has been verified as a reasonable method to optimize system dynamic *** these two technologies into one component can combine their advantages ***,few works focused on *** this paper,a twin spools valve with switching technologycontrolled pilot stage(TSVSP)is presented,which applied DHT into its pilot stage while appending IMC into its main *** on this prototype valve,a series of numerical and experiment analysis of its IMC performance with both simulated load and excavator boom cylinder are carried *** showed fast and robust performance of pressure and flow compound control with acceptable fluctuation phenomenon caused by switching *** time of flow response in excavator cylinder can be controlled within 200 ms,meanwhile,the recovery time of rod chamber pressure under suddenly changed condition is optimized within 250 *** system based on TSVSP can improve both dynamic performance and robust characteristics of the target actuator so it is practical in valve-cylinder system and can be applied in mobile machineries.

关键词： High speed on/off valve(HSV) Digital hydraulic technology(DHT) Switching pilot control twin spools valve Independent metering control(IMC)

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