SHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To lessen shift shock.SOLUTION: A shift control device of an automatic transmission 10 using a shift model indicating a correspondence relation between a shift target value of a shift control and a controlled variable for realizing the shift target value and reference torque share rates of engagement-side engagement devices 21 responsible for a demanded input torque of an input shaft 11 and disengagement-side engagement devices 21 in the shift control at a time of implementing the shift control to engage or disengage a plurality of engagement devices 21 disposed between the input shaft 11 and an output shaft 12 in response to a target shift position, is configured so that if a difference is generated between an actual angular acceleration of the input shaft 11 and a target angular acceleration during the shift control, at least one of the reference torque share rate of the engagement-side engagement devices 21 and the reference torque share rate of the disengagement-side engagement devices 21 is corrected by an adjustment amount on the basis of a positive or negative sign of the difference and a shift pattern so as to make the actual angular acceleration closer to the target angular acceleration.SELECTED DRAWING: Figure 1