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Recently many kinds of electric vehicles have been developed as many governments demand the environ-mental friendly vehicles. In this paper, study of load optimization for the electric vehicle which has multiple axle power system was conducted. For the analysis of the vehicle which has three or four driving axles, a method based on the geometry and assumptions that considering axles as a spring model and normal forces of the axles are proportional to the displacement of the axles was applied with basic vehicle dynamics. With the developed vehicle analysis technique, algorithm to find the optimal motor operating points was developed. Using this algorithm, it was possible to find the optimization of vehicle load distribution for multiple axles according to the driving cycles. Also, control logic for the vehicle can be developed based on the optimization simulation results. Key words : Multiple axle power system( 다축 동력 시스템), Electric vehicle( 전기 차량), Vehicle dynamics( 차량 동역학), Load optimization(부하 최적화), Optimization logic(최적화 로직) |
