（1. School of Automobile， Guangdong Mechanical & Electrical Polytechnic Guangzhou， 510515， China）（2. School of Mechatronic Engineering and Automation， Foshan University Foshan， 528225， China） 在期刊界中查找 在百度中查找 在本站中查找
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摘要:
为减小自动档汽车在原地换挡时由于变速箱的扭矩扰动产生的冲击与振动，提出了汽车原地换挡时半主动液压阻尼拉杆（hydraulic damping strut，简称HDS）的设计分析方法。首先，对原地换挡的冲击与振动机理进行了理论分析；其次，构建了汽车原地换挡时的动态响应评价指标，建立了包含半主动液压阻尼拉杆的整车13自由度（degrees of freedom，简称DOFs）动力学模型，根据力分担的方法对半主动HDS的动态特性参数进行了优化分析；最后，采用整车13自由度动力学模型对汽车原地换挡时加半主动HDS和不加半主动HDS时的动态响应评价指标进了分析，并通过试验对座椅导轨的加速度进行了测试。研究结果表明，加入半主动HDS减小了汽车原地换挡时的冲击与振动。
In order to reduce the shock and vibration caused by the torque disturbance of gearbox in the process of in situ shift for vehicles equipped with automatic transmission， the design and analysis method of a novel semi-active hydraulic damping strut （HDS） is put forward. Firstly， the shock and vibration mechanism of in-situ shift is theoretically analyzed. Secondly， the dynamic response evaluation indexes are constructed， and the vehicle dynamic model with13 degrees of freedom （DOFs） is established including semi-active HDS. The dynamic characteristic parameters of the semi-active HDS are optimized based on the method of force sharing. Finally， the dynamic response evaluation indexes with and without semi-active HDS are analyzed using the 13 DOFs vehicle dynamic model in situ shift process， and the acceleration of seat rail is tested by experiments. The study results show that the shock and vibration of the vehicle is reduced by introducing the semi-active HDS.