| 摘要 |
PROBLEM TO BE SOLVED: To improve the accuracy in correcting the transmission torque of a clutch when the clutch is slipping.SOLUTION: Correction of AT transmission torque Tat deviating from an instruction value by using a difference &Dgr;Tat between an estimation value of the AT transmission torque Tat and the instruction value thereof makes it possible to improve accuracy in correcting the AT transmission torque Tat when a transmission 20 is engaged in changing speeds. That is, the difference between the instruction value of the AT transmission torque Tat and the estimation value thereof is directly corrected, and therefore it is possible to correct the AT transmission torque Tat as required. Here, using of a delay-considered instruction value for the instruction value of the AT transmission torque Tat makes it possible to reduce a temporal error between the instruction value and estimation value at the time of calculating the difference &Dgr;Tat, enabling a further accuracy in correcting the AT transmission torque Tat. This enables improvement of a life of components (e.g., a friction member of a clutch C) and suppression of deterioration in drivability. |
