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    Performance of Proportional Flow Valve With Pilot Pressure Drop—Spool Opening Compensation

    Source: Journal of Dynamic Systems, Measurement, and Control:;2017:;volume( 139 ):;issue: 001::page 11009
    Author:
    Huang, Jiahai
    ,
    Dai, Jiangjiao
    ,
    Quan, Long
    ,
    Lan, Yuan
    DOI: 10.1115/1.4034504
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Flow control valves are extensively used to control the motion of hydraulic actuators in industry. In this paper, a two-stage proportional flow control valve with pilot digital pressure compensator is presented. The proposed valve is composed of two pressure sensors, a proportional pilot valve, a Valvistor poppet valve (main stage), and an electronic controller. The pressure drop across the pilot valve metering orifice is detected by two pressure sensors and fed into the controller which changes the pilot valve input voltage to compensate pressure influence on the outlet flow. The presented valve is investigated theoretically by simplified analytical models as well as numerical methods and also evaluated experimentally. The results show that the proposed scheme is feasible. It has a reasonable static performance and an acceptable dynamic characteristic for low bandwidth disturbances. The flow force on the Valvistor poppet should be estimated and considered in the controller design.
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      Performance of Proportional Flow Valve With Pilot Pressure Drop—Spool Opening Compensation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4236568
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    contributor authorHuang, Jiahai
    contributor authorDai, Jiangjiao
    contributor authorQuan, Long
    contributor authorLan, Yuan
    date accessioned2017-11-25T07:20:37Z
    date available2017-11-25T07:20:37Z
    date copyright2016/17/10
    date issued2017
    identifier issn0022-0434
    identifier otherds_139_01_011009.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4236568
    description abstractFlow control valves are extensively used to control the motion of hydraulic actuators in industry. In this paper, a two-stage proportional flow control valve with pilot digital pressure compensator is presented. The proposed valve is composed of two pressure sensors, a proportional pilot valve, a Valvistor poppet valve (main stage), and an electronic controller. The pressure drop across the pilot valve metering orifice is detected by two pressure sensors and fed into the controller which changes the pilot valve input voltage to compensate pressure influence on the outlet flow. The presented valve is investigated theoretically by simplified analytical models as well as numerical methods and also evaluated experimentally. The results show that the proposed scheme is feasible. It has a reasonable static performance and an acceptable dynamic characteristic for low bandwidth disturbances. The flow force on the Valvistor poppet should be estimated and considered in the controller design.
    publisherThe American Society of Mechanical Engineers (ASME)
    titlePerformance of Proportional Flow Valve With Pilot Pressure Drop—Spool Opening Compensation
    typeJournal Paper
    journal volume139
    journal issue1
    journal titleJournal of Dynamic Systems, Measurement, and Control
    identifier doi10.1115/1.4034504
    journal fristpage11009
    journal lastpage011009-8
    treeJournal of Dynamic Systems, Measurement, and Control:;2017:;volume( 139 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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