Vibration Suppression of Hub Motor-Air Suspension Vehicle

Hong Jiang, Chuqi Wu and Bo Chen
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Hong Jiang: School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
Chuqi Wu: School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
Bo Chen: School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China

Energies, 2022, vol. 15, issue 11, 1-19

Abstract: Aiming at the negative vibration effect caused by the increased unsprung mass of the hub motor-air suspension (HM-AS) vehicle and the unbalanced magnetic force (UMF) of the hub motor, a linear quadratic regulator (LQR) air suspension control strategy based on a genetic algorithm is proposed. Considering the coupling effect of road surface excitation and UMF, the model of the HM-AS vehicle is established. Then, according to optimal control theory and the genetic algorithm, the LQR controller is designed to suppress the vibration of the HM-AS vehicle, and the weight matrix of the LQR controller is optimized through the genetic algorithm. The simulation results show that the proposed LQR control strategy effectively improves the ride comfort and motor safety of the HM-AS vehicle.

Keywords: hub motor; air suspension; electric vehicle; vehicle model; optimal control; genetic algorithm (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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