调速阀式旁路节流调速系统动态特性理论及试验研究.PDF

35 2 () http: / /www. kustjourna.l com / o.l 35 No2 20104 Journal ofKunm ingUniversity of Science andTechnology ( Science andTechnology) Apr. 2010 do:i 10. 3969/j. issn. 1007- 855x. 2010. 02. 012 1 2 3 1 陈继文 , 李志红, 杨红娟 , 于复生 ( 1. , 250101; 2. , 361024; 3. , 250101) : 针对负载变化时旁路节流调速回路存在的液压缸输出前冲和液压缸进油腔压力冲击的问 ,采用理论分析与试验研究相结合的方法,研究了调速阀式旁路节流调速系统参数变化对系统 动态特性的影响.建立了旁路串接调速阀的节流调速系统动态特性的理论模型, 并进行了相应的 试验研究,试验数据分析结果与理论分析相吻合, 为此类型回路系统设计提供了参考依据. : 旁路节流调速; 动态分析; 方块图 : TH1377 : A : 1007- 855X( 2010) 01- 0056- 05 Theory and ExperimentalResearch of Dynam ic Characteristics of peed ControlValve Type by- Pass Trimming Circuit 1 2 3 1 CHEN J iw en , L IZh ihong , YA NG Hongjuan , YU Fusheng ( 1. SchoolofM echanical and Electronic Engineering, Shandong JianzhuUniversity, Jinan 250101, China; 2. Department ofM echanicalEngineering, XiamenUniversity ofTechnology, Xiamen, Fujian 361024, China; 3. SchoolofElectronic and ElectricalEngineering, Shandong JianzhuUniversity, Jinan 250101, China) Abstract: Considering abrupt forward outputof thehydraulic cylinder and pressure shocks of the supply cavity of hydraulic cylinder in response to the load changes ofbypass trmi m ing circuit, this paper studies the influence of parameters changesof speed controlvalve typebypass trmi m ing system on the dynam ic characteristics ofhydrau lic system by theoreticalanalysis and expermi entalstudy. A theoreticalmodelof dynam ic characteristics is estab lished for the throttle governing speed control system with bypass speed controlvalve. The corresponding experi mental study is then described. The analysis resul