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Analysis of Vibration and Noise for the Powertrain System of Electric Vehicles under Speed-Varying Operating Conditions by Chenghao Deng; Qingpeng Deng; Weiguo Liu; Cheng Yu; Jianjun Hu; Xiaofeng Li is a Engineering article available to read on EtoBox.

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Whine noise from the electric powertrain system of electric vehicles, including electromagnetic noise and gear-meshing noise, significantly affects vehicle comfort and has been getting growing concern. In order to identify and avoid whine problems as early as possible in the powertrain development process, this paper presents a vibration and noise simulation methodology for the electric powertrain system of vehicles under speed-varying operating conditions. The electromagnetic forces on the stator teeth of the motor and the bearing forces on the gearbox for several constant-speed operating conditions are obtained first by electromagnetic field simulation and multi-body dynamic simulation, respectively. Order forces for the speed-varying operating condition are generated by interpolation between the obtained forces, before they are applied on the mechanical model whose natural modes have been calibrated in advance by tested modes. The whine noise radiated from the powertrain is then obtained based on acoustic boundary element analysis. The simulated bearing forces indicate that the overlooking of the motor torque ripple does not result in significant loss in simulation accuracy of e

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Author

Chenghao Deng; Qingpeng Deng; Weiguo Liu; Cheng Yu; Jianjun Hu; Xiaofeng Li

Publisher

Hindawi Publishing Corporation; Hindawi Limited; Lausanne: Gordon and Breach Science Publishers SA, 1995-; London: Hindawi (ISSN 1024-123X)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)