Research and design of a new type of close wheel drive system using motor as dynamic absorber and gear-linkages

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (18) : 46-51.

Chen Xinbo1,2 Wang Yefeng1 Wang Wei1 Zhu Jianfei3 Sun Haoqi1

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Abstract

To solve the problem of the large unsprung mass of distributed driving system, this paper designed a new type of gear-linkages dynamic absorber. And the spatial arrangement of a wheel drive system with a swing motor as dynamic vibration absorber was evaluated in the multi-link suspension. Considering the anti-torque of traction and road roughness, the kinetic equations and three degrees of freedom vibration in MATLAB software were established. Under the New European Driving Cycle (NEDC) condition, the time domain response was acquired through Simulink system. Then with the target of the body acceleration, wheel dynamic load and vibration condition of motor, dynamic vibration absorber’s stiffness and damping were optimized. Then its effect on improving vehicle comfort and wheel ground adhesion were compared with traditional car and normal in-wheel drive ( IWD) system based on body acceleration and wheel dynamic load. The results show that the wheel drive system with a swing motor as dynamic vibration absorber is feasible in the multi-link suspension. And vehicle ride comfort and ground adhesion are improved effectively compared with the in-wheel drive system and traditional drive system．

Key words

close wheel drive system / gear-linkages / dynamic absorber / parameter optimization

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Chen Xinbo1,2 Wang Yefeng1 Wang Wei1 Zhu Jianfei3 Sun Haoqi1. Research and design of a new type of close wheel drive system using motor as dynamic absorber and gear-linkages[J]. Journal of Vibration and Shock, 2016, 35(18): 46-51

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