六自由度拖拉机-人椅系统振动特性仿真研究

发布时间：2018-06-07 05:02

本文选题：拖拉机-人椅系统 + 振动特性　；参考：《农机化研究》2016年10期

【摘要】：为了预测动态环境人-车-路系统中驾驶员的振动响应特性及驾驶舒适性,基于振动理论建立了六自由度拖拉机-人椅系统整车动力学模型,由Simulink搭建起仿真模型,通过输入一国产中型拖拉机的主要技术参数运行仿真程序,对仿真结果进行了时域及频域分析,并依据该拖拉机的实车试验结果验证了仿真结果的可靠性。仿真结果表明:随着路面等级的降低,拖拉机的人椅系统所受振动加速度响应幅值明显增大;人椅系统所受各向振动由大到小依次为垂直方向、侧倾方向和俯仰方向;该拖拉机人椅系统的固有振动频率为3Hz左右,其座椅舒适性有待改善。
[Abstract]:In order to predict the driver's vibration response characteristics and driving comfort in the man-vehicle road system in dynamic environment, based on the vibration theory, the vehicle dynamic model of a six-degree-of-freedom tractor / chair system is established, and the simulation model is built by Simulink. The simulation results are analyzed in time domain and frequency domain by inputting the simulation program of main technical parameters of a medium tractor made in China. The reliability of the simulation results is verified by the actual vehicle test results of the tractor. The simulation results show that the amplitude of vibration acceleration response of the tractor chair system increases obviously with the decrease of the pavement grade, and the vibration of the chair system is in the vertical direction, the roll direction and the pitch direction in turn from large to small. The natural vibration frequency of the tractor chair system is about 3Hz, and its seat comfort needs to be improved.
【作者单位】：东北农业大学工程学院;
【基金】：“十二五”国家科技支撑计划项目(2014BAD06B04-1)
【分类号】：S219.03

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