A Study on Control Strategy under Tip-In Condition Based on AMT Vehicle

Abstract

The control strategy of gear-position optimization of an AMT vehicle under Tip-in condition is presented in this article. The down-shift principle of an automatic transmission under an acceleration condition is also analyzed. The in-the-loop simulation platform of transmission system software of an AMT vehicle is established using the Matlab/Simulink. The simulation platform mainly includes the vehicle load module and the control strategy module. The vehicle load module mainly includes the driver intention module, the transmission model, the engine model, the synchronizer model, the clutch model and the resistance model. The hard-acceleration condition is simulated under no deceleration condition by utilizing the optimized control strategy and conventional control strategy respectively. The result indicates that the proposed control strategy can identify a drivers intention, decrease shift times, reduce power interruption time, improve comfort and make the vehicle reach the maximum speed quickly.