摘要
为了提高悬架减振器的设计效率和降低开发的难度,以某乘用车的可变阻尼减振器为研究对象,对减振器的实物模型和力学特性研究建立了减振器的仿真模型,利用AMESim仿真软件得出减振器的外特性曲线,在相同的参数条件下进行台架试验并验证了模型的精确性。在减振器系统的基础上分别建立1/4车辆被动悬架和半主动悬架仿真模型,在PID控制器的控制下得出在不同激励下车身振动特性曲线的幅值和功率谱密度大小,检验了两种不同悬架的减振性能。结果表明:仿真模型的外特性曲线和台架试验的结果在误差范围内吻合良好,半主动悬架中车身振动曲线的幅值和功率谱密度较被动悬架小。验证了可变阻尼减振器和悬架仿真模型的正确性,说明了这种研究方法的有效性。
In order to improve the design efficiency of suspension shock absorber and reduce the difficulty of development,with the variable damping shock absorber of passenger car as the research object,research on physical model and the mechanical properties of shock absorber simulation model of shock absorber is established using AMESim simulation software the shock absorber of the external characteristic curve,under the condition of the same parameters to test and verify the accuracy of the model.Based on the shock absorber system,the simulation models of 1/4 vehicle passive suspension and semi-active suspension were established respectively.Under the control of PID controller,the amplitude and power spectral density of the vibration characteristic curve of the vehicle body under different excitations were obtained,and the vibration reduction performance of the two kinds of suspension were tested.The results show that the external characteristic curve of the simulation model agrees well with the test results within the error range,and the amplitude and power spectral density of the vibration curve of the body in the semi-active suspension are smaller than that of the passive suspension.The correctness of the simulation model of variable damping shock absorber and suspension is verified,and the validity of this research method is illustrated.
作者
张博强
赵浩翰
冯天培
徐浩
ZHANG Bo-qiang;ZHAO Hao-han;FENG Tian-pei;XU Hao(College of Mechanical and Electrical Engineering,He'nan University of Technology,Zhengzhou He'nan 450001,China;Xuancheng Xieying Auto Parts Technology Co.,Ltd.,Anhui Xuancheng 242000,China)
出处
《机械设计与制造》
北大核心
2021年第6期10-14,共5页
Machinery Design & Manufacture
基金
纯电动客车试验检测体系建设项目基金(182107000009)。
关键词
减振器
可变阻尼
1/4汽车悬架
仿真分析
Shock Absorber
Variable Damping
1/4 Automobile Suspension
Simulation Analysis
