阀泵联合大功率液压调速方案分析  

Analysis of valve-pump combined high power hydraulic speed regulation schemes

作　　者：丁海港[1,2] 赵继云[1] 李广洲[1] 

机构地区：[1]中国矿业大学机电工程学院,江苏徐州221116 [2]徐州工业职业技术学院机械工程系,江苏徐州221140

出　　处：《煤炭学报》2013年第9期1703-1709,共7页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(51175497);江苏省教育厅研究生科研创新计划资助项目(CX10B_135Z);江苏省"青蓝工程"资助项目

摘　　要：为进一步提高其控制性能,在对比分析目前阀泵串联、并联控制方案的结构、工作原理及特点的基础上,提出了阀泵并联分时变结构调速方案-控制结构依调速要求而变、阀控与泵控分时参与、协调控制,并分为补油式与泄油式两种形式,应用于煤矿液压提升机,可形成补油式/泄油式阀泵并联分时变结构液压提升机,同时对比分析了这两种形式各自的特点。阀泵并联分时变结构调速方案,建立了调速方式依调速要求而变的灵活的控制机制,将丰富液压系统的控制方式,有望解决大功率液压调速系统中效率与响应的矛盾,并兼顾系统的低速稳定性和加减速平稳性。To improve control performances of this combined control system, current construction, control principle and performance of valve-pump parallel control schemes and valve-pump series control schemes were analyzed, then a scheme of valve-pump parallel speed servo with time-sharing variable structure was proposed, its control principle was that control structure varies with speed control requirement, pump and valve time-sharing participate and coordinated control. The scheme includes two types：replenishing and leaking, a valve-pump parallel control hydraulic hoist with time-sharing variable structure in replenishing manner and in leaking manner were developed when the scheme was applied to the hydraulic hoist. Finally, characteristics of the two control manners were also contrastively studied,which would provide basic theory for selection and parameters configuration for valve-pump combined control system. The time-sharing variable structure control scheme establishes a flexible control mechanism that control structure can vary with control requirement in a speed regulating process. It will enrich the control manner of hydraulic servo system, and probably solve the contradiction between efficiency and response of high power hydraulic control system, also gives consideration to the speed stability in stage of start-up.

关 键 词：阀泵串联控制 阀泵并联控制 分时变结构控制 液压马达调速系统 液压提升机 

分 类 号：TH137[机械工程—机械制造及自动化]