Active control of hybrid electric vehicle launch vibration in pure electric mode

Sudden torque changes and torque fluctuations caused by a traction motor in HEV (hybrid electric vehicle) can result in a driveline oscillation. This paper focuses on the HEV launch vibration in pure electric mode while only the electric motor is generating output torque. A relevant mathematical mod...

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Bibliographic Details
Published in:Journal of vibration and control 2018-02, Vol.24 (4), p.673-681
Main Authors: Guo, Rong, Wang, Meng-jia
Format: Article
Language:English
Subjects:
Active control
Angular acceleration
Computer simulation
Control methods
Electric propulsion
Electric vehicles
Hybrid electric vehicles
Passengers
Pole placement
Propulsion systems
Torque
Torsional vibration
Trucks
Variation
Vibration
Vibration analysis
Vibration control
Vibration perception
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Summary:Sudden torque changes and torque fluctuations caused by a traction motor in HEV (hybrid electric vehicle) can result in a driveline oscillation. This paper focuses on the HEV launch vibration in pure electric mode while only the electric motor is generating output torque. A relevant mathematical model has been built based on the working principle. According to the model, the torsional vibration characteristics of the electric propulsion system have been analyzed. Two active control methods, feed-forward control (FFC) and pole placement (PP) have been applied to suppress the HEV launch vibration. However, such longitudinal vibration may still be perceived by passengers, though they can attenuate the vibration to some extent. Therefore another method, wave superposition control strategy (WSCS), has been proposed to suppress the vibration more effectively. In order to prove the control effectiveness of WSCS, all these three active control methods have been applied in simulation for a comprehensive comparison of the vibration suppression effect. Simulation results demonstrate that compared with FFC and PP, WSCS minimizes the overshoot of wheel angular acceleration (WAA) most and doesn’t have much effect on the system response quickness, which can be regarded as the most effective control method.
ISSN:1077-5463
1741-2986
DOI:10.1177/1077546316648811