IJEART

To meet the dynamic requirements of the automobile, the optimal dynamic shift schedule of the six-speed automatic transmission for automobiles is studied in this paper. Firstly, the maximum acceleration as the basis for formulation and the vehicle speed and accelerator pedal opening as variables of control parameter were selected, and then the vehicle speed at the intersection of the acceleration between the two adjacent gears as the speed of the up-shift point of the gear was taken. Finally, we performed polynomial fitting interpolation for each shift point by using Polynomial of MATLAB software to obtain the best dynamic shift schedule curve. The results show that it can effectively play the power of the engine and improve the dynamic performance of the vehicle.