防爆液压提升机电液伺服调速控制方案分析-煤炭学报.PDFVIP

摇 第36卷第8期 煤摇 摇 炭摇 摇 学摇 摇 报 Vol.36摇 No.8摇 摇 2011年 8月 JOURNAL OF CHINA COAL SOCIETY Aug.摇 2011摇 摇 摇 文章编号:0253-9993(2011)08-1407-05 防爆液压提升机电液伺服调速控制方案分析 1,2 1 1 丁海港 ,赵继云 ,赵摇 亮 (1郾 中国矿业大学 机电工程学院,江苏 徐州摇 221116;2郾 徐州工业职业技术学院机械工程系,江苏 徐州摇 221140) 摘摇 要:在分析现有液压提升机的液压控制系统的结构与特点的基础上,建立泵控马达电液伺服调 速系统,以模拟液压提升机的闭环控制与运行工况,通过对带/ 不带位置环泵控马达伺服系统的调 速特性的分析,指出液压提升机的电液伺服控制应在引入马达转速反馈形成转速闭环的同时,保证 变量泵的排量是独立可控的,并以此为据,针对传统液压提升机进行自动化改造,设计了带/ 不带位 置环的防爆液压提升机电液伺服调速系统。 关键词:防爆液压提升机;电液伺服调速;控制方案;泵控马达系统 中图分类号:TD534郾1摇 摇 摇 文献标志码:A Analysis on electrohydraulic speed servo control schemes for anti鄄explosion hydraulic hoisters 1,2 1 1 DING Hai鄄gang ,ZHAOJi鄄yun ,ZHAO Liang (1郾School of MechanicalandElectricalEngineering,China University of Mining and Technology,Xuzhou摇 221116,China;2郾Departmentof MechanicalEngi鄄 neering,Xuzhou College of Industrial Technology,Xuzhou摇 221140,China) Abstract:Based on the analysis of construction and disadvantages of hydraulic control system existing in hydraulic hoisters,a pump controlled motor speed servo system was set up to simulate the close loop control and process of hy鄄 draulic hoisters,andthen dynamicperformancesof the systemwith/ without positionloopwere analyzed,and a conclu鄄 sion was gained:the electrohydraulic servo control for hydraulic hoisters should ensure the displacement of a variable displacement pump to be regulated independently while motor爷s rotary speed are fed back and to be controlled in closed loop.Based on this theory,intermsof automatictransformationfor traditional anti鄄explosion hydraulichoisters, those electrohydraulic speed servo control system