The efficiency-optimal torque distribution strategy for front-and-rear-axle-type two-speed-gear electric vehicles
A comprehensive efficiency optimal method for torque distribution of front-and-rear-axle-type electric two-speed-gear four-wheel drive vehicles was proposed.To optimize the comprehensive efficiency,optimal as the objective,a mathematical model of vehicle energy efficiency was established.The system efficiency optimal allocation method was used to obtain the vehicle efficiency optimal torque distribution coefficient matrix.Under the joint simulation environment of Avl-Cruise and MATLAB Simulink,the efficiency optimal torque distribution model was verified by using the CLTC cycle.The simulation results show that compared with the average torque distribution strategy,the efficiency optimal distribution strategy can effectively distribute the torque of the front and rear axle motors,ensure a suitable efficiency range of motor,and reduce the power consumption effectively.
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