多变量泵驱动液压系统比例与恒功率控制研究  

Research on Proportional and Constant Power Control on Multiple Variable Displacement Pump Drive Hydraulic System

作　　者：邢彤[1] 杨华勇[2] 龚国芳[2] 

机构地区：[1]浙江工业大学教育科学与技术学院 [2]浙江大学流体传动及控制国家重点实验室

出　　处：《工程机械》2008年第6期45-49,共5页Construction Machinery and Equipment

基　　金：国家杰出青年基金资助项目(50425518);国家重点基础研究规划"973"项目(2007CB714004)

摘　　要：研究的盾构掘进机刀盘驱动液压系统是闭式油路容积调速液压系统,系统由两个大排量的HD控制型变量泵驱动8个变量液压马达。液压系统中的泵和马达的控制是通过一个集成的电液控制模块实现的,模块中包括有比例溢流阀和功率限制阀,实现了变量泵的比例控制和恒功率控制。分析了这种多驱动泵液压系统的恒功率控制原理,计算了功率限制阀的调节参数;建立了液压系统的AMEsim仿真模型,仿真分析了液压系统的基本特性。仿真分析表明,该控制系统能够满足设计要求。The researched hydraulic drive system for cutting disc of a shield TBM is a kind of close-loop, volumetric speed control hydraulic system. In the system, two large, HD control, variable displacement pumps drive eight variable displacement hydraulic motors. The control of the pumps and motors in the system is realized through an integrated electro-hydraulic control module. The module consists of proportional relief valve and power limit valve to realize proportional control and constant power control on the variable displacement pumps. Constant power control principle of the multiple drive pump hydraulic system is analyzed. Adjustment parameter for power limit valve is calculated. AMEsim simulation model of the hydraulic system is established and basic characteristics of the system are analyzed. The simulation analysis shows that the control system can satisfy the design requirements.

关 键 词：盾构掘进机 液压系统 电液比例控制 恒功率控制 

分 类 号：TU621[建筑科学—建筑技术科学]