基于车内NVH控制的悬置刚度与阻尼的设计方法

发布时间：2018-04-11 06:00

本文选题：振动噪声及其控制 + 液压悬置　；参考：《振动.测试与诊断》2016年01期

【摘要】：基于汽车座椅滑槽的振动与驾驶员右耳旁噪声控制的要求和建立的由动力总成、车身和非簧载质量组成的13自由度汽车模型,提出了动力总成悬置动刚度和阻尼的设计方法。在计算模型中,将悬置的动刚度和阻尼简化为与激振频率相关的函数。各悬置与车身连接点的动态力、各悬置到汽车座椅滑槽振动与驾驶员右耳旁噪声的传递函数可以通过试验或计算方法得到。给出了在不同工况下,车内评价点的振动和噪声的计算方法。基于对整车振动和噪声控制的要求,给出了液阻悬置动刚度和阻尼的确定原则与计算方法。结果表明,基于车身评价点振动控制要求的液阻悬置阻尼设计对于降低车身评价点的振动具有明显作用。
[Abstract]:Based on the requirements of vibration control of seat chute and driver's right ear noise control and the establishment of a 13 degree of freedom vehicle model composed of power assembly, body and non-spring mass, the design method of dynamic stiffness and damping of powertrain mount is proposed.In the model, the dynamic stiffness and damping of the mount are simplified to the function related to the exciting frequency.The transfer function of the dynamic force between the mounting and the body connection points, the vibration of each mounted seat chute and the driver's right ear noise can be obtained by means of experiment or calculation.The calculation method of vibration and noise of evaluation point in vehicle under different working conditions is given.Based on the requirements of vibration and noise control of the whole vehicle, the principle and calculation method of determining the stiffness and damping of hydraulic suspension are given.The results show that the design of liquid-resistance suspension damping based on the vibration control requirements of the evaluation point of the vehicle body has an obvious effect on reducing the vibration of the evaluation point of the vehicle body.
【作者单位】：华南理工大学机械与汽车工程学院;上汽通用五菱汽车股份有限公司;宁波拓普集团股份有限公司;
【基金】：国家自然科学基金青年基金资助项目(51305139) 中央高校基本科研业务费面上资助项目(2013ZM0016) 广东省自然科学基金资助项目(2014A030313254)
【分类号】：U464.13;U461.4

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