研究目的
Investigating the energy-efficient torque distribution among the four drivetrains for reducing the drivetrain power losses and extending driving range.
研究成果
The developed strategy is easily implementable as a small-sized look-up table in the main control unit of the vehicle, allowing real-time operation with minimum demand on the processing hardware. The experimental analysis confirms the validity of the proposed CA algorithm at different vehicle velocities and torque demands.
研究不足
The approximation related to the assumptions of tire slip ratios similar to those in the rolling road experiments and negligible rolling resistance variation with vertical load will be addressed in future work.
1：Experimental Design and Method Selection:
The methodology involves formulating the optimal torque distribution as a parametric optimization problem depending on the vehicle speed. An analytical solution is provided for the case of equal drivetrains.
2：Sample Selection and Data Sources:
Experiments were conducted on an EV demonstrator, along driving cycles and cornering maneuvers.
3：List of Experimental Equipment and Materials:
The vehicle demonstrator is an electric Range Rover Evoque with four identical on-board switched reluctance motors. A dSPACE AutoBox system is used for running all controllers.
4：Experimental Procedures and Operational Workflow:
The tests were conducted using a MAHA rolling road facility allowing speed and torque control modes of the rollers.
5：Data Analysis Methods:
The performance of the CA strategy is verified through computer simulations with a vehicle dynamics model and experiments.
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