伺服电动机定量液压泵驱动的注塑机电液控制系统分析  

Research on the electro-hydraulic control system driven by AC servo motor and constant pump used in plastic injection model machine

作　　者：权龙[1] 王成宾[1] 

机构地区：[1]太原理工大学机械电子工程研究所,山西太原030024

出　　处：《液压气动与密封》2005年第4期16-20,共5页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金资助(批准号50275102)

摘　　要：对采用伺服电动机、定量液压泵闭环驱动的注塑机电液控制系统进行了研究,分析了泵输出流量控制原理、泵控差动缸回路原理。针对当采用恒定总压力预压紧时,电动机存在较大制动能耗的问题,提出负载适应的总压力曲线设定方法,获得了较好的效果。Research is carried out on the electro-hydraulic control system based on AC servo motor and constant pump used in plastic injection model machine. Three types of flow control principle are analyzed and compared. The principle to control the differential cylinder with pump closed loop is also investigated. To the problem of larger energy loss caused by constant sum pressure pre-charge of cylinder, a load adaptive sum pressure profile is suggested to improve it. The experimental results show that the method is very effective.

关 键 词：伺服电动机 定量泵 注塑机 

分 类 号：TH137[机械工程—机械制造及自动化]