基于吸收压力冲击的蓄能器参数设计及其仿真研究  

Study on Parameters Design and Hydraulic Shock Reduction of Hydraulic Accumulator for Hydrostatic Transmission System

作　　者：柳俊忻[1] 马彪[1] 李和言[1] 陈宝瑞[1] 

机构地区：[1]北京理工大学车辆传动国家重点实验室,北京100081

出　　处：《车辆与动力技术》2009年第2期6-11,共6页Vehicle & Power Technology

基　　金：国防预先研究项目(62301030303);高等学校学科创新引智计划(B08043)

摘　　要：基于车辆静液驱动系统的工作原理及其特点,设计了一种由蓄能器、开关阀、三位三通阀组成的吸收压力子系统;建立了蓄能器的数学模型,详细分析了系统中气囊式蓄能器的各参数之间的关系及其充气容积、有效容积和压力的计算方法;基于变量泵-变量马达闭式静液驱动系统结构,从吸收压力冲击及能量储存再利用的角度提出了蓄能器容积的确定方法;基于MATLAB/SIMULINK平台建立了泵-马达-蓄能器模型,仿真分析了蓄能器吸收压力冲击的效果.Based on two-pump-two-motor hydrostatic transmission system, a new subsystem of absorbing hydraulic shock is developed by relocating accumulator and electronically controlled on-off valves. By establishing the mathematical models of accumulator, it sets up simulation models with the module of MAT- LAB/SIMULINK. The relationship between the accumulator parameters, such as polytropic exponent, charge volume, effective volume and pressure of accumulator. By simulating the condition of system pres- sure after adding the accumulator, the dynamic characteristics of the hydrostatic transmission system and the effect of parameters on hydraulic shock reduction are analyzed.

关 键 词：静液传动 蓄能器 压力冲击 参数设计 

分 类 号：U463.222[机械工程—车辆工程]