Shift Quality and Optimal Control of an Uninterrupted Shift Transmission Based on Overrunning Mechanism
Working principle of an uninterrupted shift transmission (UST) based on overrunning mechanism and its driveline dynamic model, as well as shift control strategy are studied. For shift quality optimization, the throttle control parameters are calculated based on simplex method and genetic algorithm. Using the control strategy and optimized parameters, simulation results show that jerks and clutch slip during shift are controlled well, satisfactory shift quality is obtained without power flow interruption.
Y. W. Liu et al., "Shift Quality and Optimal Control of an Uninterrupted Shift Transmission Based on Overrunning Mechanism", Applied Mechanics and Materials, Vols. 48-49, pp. 1038-1043, 2011