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Integration design and parameter optimization for a novel in-wheel motor with dynamic vibration absorbers

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Abstract

To overcome vertical vibration negative effects induced by high unsprung mass of the existing IWM, a novel integrated IWM topology scheme is developed. This scheme aims for the integrated design of hub, rotor housing and brake disk, and the stator is considered as a DVA, which is flexibly isolated from the unsprung system by the suspension elastic sleeve. Primarily, the quarter-vehicle dynamic model with the DVA-based electric wheel is established, and the improved vibration transmission characteristics of the integrated IWM are clarified in the frequency domain. Then, according to the sensitivity analysis theory, the sensitivity of the vertical dynamic response to the association structural parameters such as stator mass, stiffness and damping of rubber bushing and bearing is discussed. On this basis, the MCO of the association structural parameters is carried out by using the adaptive weighted PSO and FEM. After optimization and treatment, the overall mass of stator decreases by 9.35% when the structure strength is satisfied, the vertical dynamic characteristics of the integrated IWM system have been improved to varying degrees; particularly, the motor MGD gets more than 20% improvement. The results demonstrate that the proposed integrated scheme can observably improve the vehicle vertical dynamics and simultaneously the DVA system exhibits excellent performance in terms of wheel and motor vibration suppression.

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Abbreviations

BVA:

Body vertical acceleration

DVA:

Dynamic vibration absorber

EVs:

Electric vehicles

FEM:

Finite element method

IWM:

In-wheel motor

MCO:

Multi-objective collaborative optimization

MGD:

Magnet gap deformation

PSO:

Particle swarm optimization

RMS:

Root mean square

RSR:

Road surface roughness

RWDL:

Relative wheel dynamic load

SDD:

Suspension dynamic deflection

VNE:

Vertical negative effects

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Acknowledgements

This research was supported by the Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents (Grant No. 2017RCJJ053) and Key R&D project of Shandong Province (Grant No. 2016GGX105008).

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Authors and Affiliations

  1. School of Transportation, Shandong University of Science and Technology, Qingdao, 266590, China

    Qiang Wang, Rui Li, Youfeng Zhu, Xianbin Du & Zongfeng Liu

Authors
  1. Qiang Wang
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  2. Rui Li
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  3. Youfeng Zhu
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  4. Xianbin Du
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  5. Zongfeng Liu
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Correspondence to Qiang Wang.

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Technical Editor: Wallace Moreira Bessa.

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Wang, Q., Li, R., Zhu, Y. et al. Integration design and parameter optimization for a novel in-wheel motor with dynamic vibration absorbers. J Braz. Soc. Mech. Sci. Eng. 42, 459 (2020). https://doi.org/10.1007/s40430-020-02543-8

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  • DOI: https://doi.org/10.1007/s40430-020-02543-8

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