Dynamic analysis of independent motor-driving wheel system
With the development of economy, the electric vehicle (EV) has received wide attention because of its advantages of low emission and high efficiency. It has to be admitted that EVs should be the trend of future transportation. EVs are different from traditional cars with its battery energy source and motor power source. As a new method of driving, the motor-driving wheel system consists of tire and the in-wheel permanent magnet synchronous motors (I-PMSMs). Due to the change of driving method, the forces applied to the tires of EVs will also be changed under the starting/accelerating/braking condition. Therefore, it is necessary to find a new model to describe the NVH characteristics of EVs.
Tire plays an important role on the NVH analysis of whole vehicle. Because of the complex structure and the nonlinear mechanic properties of tire, it is not easy to accurately describe the dynamic response. In consequence, building a proper model of tire is the key to solving the NVH problems of EVs.
The research targets to analyze the dynamic property of independent motor-driving wheel system. The transient response will be calculated according the motor-tire coupling dynamic model. Moreover, the irregular vibration of the IWM system will be studied. The China Scholarship Council (CSC) financially supports this PhD project.
Research Topics:
- Tire dynamics and modeling
- Uncertainty quantification
