A comprehensive new dynamic model of a four-wheel independent drive electric vehicle has been developed and different types of the motor control laws were addressed. Motorized wheels configuration is a modern transmission layout, which could soon become a reality in accordance to the rapid progress of the electric vehicle technology. It shows quite an advantage, when compared with the conventional transmission layout, in providing a better vehicle packaging and a far more improved controllability. In this configuration of the drive system, unlike that of the conventional vehicle, the improvement in the vehicle stability and the road performance does not depend on the complex and expensive mechanical systems. They can only be achieved electronically by using the perfect motor control laws. The first part of this study deals with the full description of the model scope in which the struture of the model including the sub-models has been fully developed. Subsequently, the sub-models including the tire sub-model, the body motion, and the motor dynamics were investigated, and the computer model of the vehicle has been simulated. Finally, the proposed motor control laws and the vehicle dynamic behavior of the vehicle were presented. Detailed analyses of the vehicle performance and comparison of the simulation results were also carried out.
4WID: a new concept in electrical vehicles
2001
8 Seiten, 8 Bilder, 1 Tabelle, 14 Quellen
Conference paper
English
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