液电式馈能减振器外特性仿真与试验  

Simulation and test for hydraulic electromagnetic energy-regenerative shock absorber

作　　者：张晗[1] 过学迅[1] 徐琳[1] 张杰[2] 

机构地区：[1]武汉理工大学汽车工程学院,现代汽车零部件技术湖北省重点实验室,武汉430070 [2]万向集团有限公司技术中心,杭州311200

出　　处：《农业工程学报》2014年第2期38-46,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金资助项目(51075312)

摘　　要：为了回收由路面不平引起的车辆振动能量,设计了一种车用液电式馈能减振器,并针对其外特性进行了研究。根据液电式馈能减振器组成与原理,建立了相应的数学模型,模拟试验工况计算得到了示功特性及速度特性曲线;搭建了液电式馈能减振器试验台架并进行台架试验以验证理论模型的合理性;最后,基于所建立的液电馈能式减振器数学模型分析了蓄能器充气压力、蓄能器充气体积、液压马达排量、单向阀节流口面积与液压管路内径对外特性的影响。结果表明:提高高压蓄能器充气压力可以增大系统阻尼力;增大高压蓄能器充气体积、单向阀节流口面积、液压管路内径以及液压马达排量会引起系统阻尼力减小,其中液压马达排量只对伸张行程阻尼力有影响,压缩行程阻尼力不受其影响。With the rising concerns of global environmental issues, energy saving in automobiles becomes an important subject. In order to achieve the purpose of vibration reduction, the traditional passive shock absorber converts the vehicle vibration energy to thermal energy, and then the thermal energy is released into the air. However, the energy-regenerative shock absorber could harvest this part of the energy. This paper presents a vehicular hydraulic electromagnetic energy-regenerative shock absorber （HESA） which is designed for acquiring the vibration energy caused by road irregularity. It is composed of a hydraulic cylinder, two check valves, two accumulators, a hydraulic motor, a generator, and hydraulic lines. When the vehicle is subjected to vertical vibration, the oil in the HESA flows to the hydraulic motor through a hydraulic line, then the rotating hydraulic motor drives a generator to produce electricity. In order to consider the vibration reduction performance of the HESA, the damping characteristic was analyzed in detail. Through theoretical analysis, the damping force mathematical model of the HESA was deduced, and the calculation program was written in MATLAB, based on the HESA damping force mathematical model. The indicator diagram characteristic and speed characteristic of the HESA under the working condition of a sinusoidal displacement input of 1.67Hz was obtained from simulation tests, which was designed according to a national absorber test procedure. A test bench was constructed to verify the results of a simulation. The comparison between the bench test data and simulation data showed that the value of a compression travel damping force was smaller than the rebound travel＇s, and the peak value of the simulation data was identical with the value in test data. The simulation speed characteristic curve of the HESA was compared with the bench test data. However, there were some distortions in the test indicator diagram characteristic curve because of the inappropriate accumulator parameters. T

关 键 词：试验 计算机仿真 减振器 能量回收 液电馈能式 

分 类 号：U461.4[机械工程—车辆工程]