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2 Journal of Theoretical and Applied Mechanics

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Design and test study of a new mixed control method for magnetorheological semi-active suspension based on electromechanical analogy theory

Jiang Yu, Wang Ruochen, Ding Renkai, Sun Dong, Liu Wei

Journal of Theoretical and Applied Mechanics

2021

Vol. 59 nr 2

189--201

For pursuing high performance, the development of semi-active suspension control tends to be complicated and ignores practicability. A new mixed control method effectively suppressing vibration of the vehicle body in the whole frequency band is proposed based on electromechanical analogy theory. Simulation results show that in comparison with passive suspension, on a long slope bumpy road, the mixed control reduces body acceleration by 21.49% and the maximum amplitude by 22.40%. On a C class road, the mixed control reduces body acceleration by 9.78%. Finally, an ECU hardware-in-the-loop test is conducted, which verifies the effectiveness and feasibility of the new mixed control method.

Multi-mode switching control of hybrid electromagnetic suspension based on road conditions adaptation

Meng Xiangpeng, Ding Renkai, Sun Zeyu, Wang Ruochen, Chen Long

Journal of Theoretical and Applied Mechanics

2020

Vol. 58 nr 3

697--710

In this research, a hybrid electromagnetic actuator is proposed to coordinate the contradictions between dynamic performance and energy consumption of an electromagnetic suspension. The hybrid electromagnetic suspension (HEMS) is configured to operate in the passive energy regeneration mode, active control ride comfort mode or active control driving safety mode depending on the road excitation frequency. Then, the HEMS system is modeled. The simulation results show that the HEMS can automatically switch between different modes, and realize an effective coordination between dynamic performance and energy saving. Finally, a quarter car test is conducted, which verifies the effectiveness of the multi-mode switching control.