| 摘要 |
PROBLEM TO BE SOLVED: To execute a desired shift of an automatic transmission using a shift model.SOLUTION: A torque sharing ratio is set as a restraining condition of a motion equation of an automatic transmission. Therefore, it is suitable for controlling delivery of the torque of an engaging device that is difficult in shift control, and its motion equation can be solved. Furthermore, the torque sharing ratio is changed while a pack clearance of an engaging side clutch is clogged, and therefore, an actual value of the clutch torque follows a clutch pressure command value. Thus, a shift according to a shift model can be executed. Also, because a condition is provided to a portion for changing the torque sharing ratio, shift control itself is started even before the pack clearance of the engaging side clutch is clogged. Therefore, the shift control can be started more quickly and the shift can be completed more quickly than when start of the shift control is delayed uniformly. |
