Coordinated control of electromagnetic, regenerative and friction braking integrated system of in-wheel motor electric vehicles Jiangsu University

Format:

Book

Conference/Event

Author/Creator:

He, Ren, author.

Conference Name:

SAE WCX Digital Summit (2021-04-13 : Live Online, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

In view of the current traditional friction braking system with heating-fading' and slow braking response by structural defects, an integrated brake system of electromagnetic braking, regenerative braking and friction braking is proposed. Firstly, the operating characteristics of the electromagnetic braking system, regenerative braking system and friction braking system are analyzed respectively, and seven operating modes of electromagnetic, regenerative and friction composite braking systems are designed, namely, the pure regenerative braking mode, the pure electromagnetic braking mode, the pure friction braking mode, the electromagnetic and regenerative composite braking mode, the regenerative and friction composite braking mode, the electromagnetic and friction composite braking mode and the electromagnetic, regenerative-friction composite braking mode, and then 7 kinds of braking model switching conditions are determined. According to the hybrid control theory, the car has both a continuous working state and a discrete state when the car is braking, and then MATLAB/Stateflow is used to establish the switching control strategy of braking mode. Finally, by building the longitudinal dynamics model of the vehicle, the tire model and the electromagnetic, regenerative-friction composite braking system model, simulation analysis of 5 different braking conditions was carried out in MATLAB/Simulink. The simulation results show that the electromagnetic and regenerative-friction composite braking system can work in different modes according to the designed coordinated switching control strategy to meet the braking requirements. At the same time, the proposed hybrid theoretical model can achieve the greatest shorten the braking distance by 8.3% and the greatest shorten the braking time by 0.13 seconds, which can effectively improve braking efficiency and improve the braking safety of the vehicle

Notes:

Vendor supplied data

Publisher Number:

2021-01-0971

Access Restriction:

Restricted for use by site license