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摘要
伺服阀有机地结合了精密机械、电子技术和液压技术；具有控制精度高、响应快、体积小、结构紧凑、功率放大系数高、直线度好、死区小、灵敏度高、动态性能高等特点。已广泛应用于各种液压伺服系统中。电液伺服阀出厂或维修以后必须进行性能测试和参数调节，以检验它的质量好坏。伺服阀用量大的使用单位或重要使用场合，用户应设有伺服阀试验台，以便对新阀性能进行复检，并对使用中的伺服阎定期复检或比较试验。
本文先通过调研伺服阀液压试验台结构原理及现状，随后在此基础上得到总体设计方案及液压系统原理图；并且，完成了各部分液压系统的控制油路设计和各种液压控制阀和各种辅助元件的理论计算和选择。设计时，从实际情况出发，有机地结合各种传动形式，充分发挥液压传动的优点，力求设计出结构简单、工作可靠、成本低、效率高、操作简单、维修方便的液压传动系统。
关键词：伺服阀、液压系统、液压泵站、试验台
Abstract
Servovalveorganicallycombinesprecisionmachinery,electronictechnologyandhydraulictechnology;Ithasthecharacteristicsofhighcontrolprecision,fastresponse,smallvolume,compactstructure,highpoweramplificationfactor,goodstraightness,smalldeadtime,highsensitivityandhighdynamicperformance.Ithasbeenwidelyusedinvarioushydraulicservosystems.Theperformancetestandparameteradjustmentmustbecarriedouttocheckthequalityoftheelectro-hydraulicservovalveafterdeliveryormaintenance.Inordertorechecktheperformanceofthenewvalveandtorecheckorcomparetheservovalveinuseregularly,theusershouldsetupaservovalvetestbenchfortheuserwithlargeamountofservovalveorimportantuseoccasions.
Inthispaper,thestructureprincipleandcurrentsituationofservovalvehydraulictest-bedareinvestigated,andthentheoveralldesignschemeandhydraulicsystemschematicdiagramareobtainedonthisbasis;Inaddition,thecontroloilcircuitdesignofeachpartofthehydraulicsystemandthetheoreticalcalculationandselectionofvarioushydrauliccontrolvalvesandauxiliarycomponentsarecompleted.Inthedesign,weshouldproceedfromtheactualsituation,organicallycombinevarioustransmissionforms,givefullplaytotheadvantagesofhydraulictransmission,andstrivetodesignahydraulictransmissionsystemwithsimplestructure,reliablework,lowcost,highefficiency,simpleoperationandconvenientmaintenance.
Keywords:ServoValve,HydraulicSystem,HydraulicPumpStation,TestBed
伺服阀