| 摘要 |
PURPOSE: To prevent the undershoot generated on actual secondary pressure and primary pressure caused by sudden reduction of target secondary pressure and target primary pressure. CONSTITUTION: When a reduction ratio of the target secondary pressure and the target primary pressure calculated by a target secondary pressure calculating part 101 and a target primary pressure calculating part 102 is more than a predetermined value, a reduction ratio-limited secondary pressure and a reduction ratio-limited primary pressure on which the reduction ratio of the target secondary pressure and the target primary pressure is limited by a reduction ratio limiting part 104, is calculated. As the hydraulic pressure control of the secondary pressure and the primary pressure is performed under the reduction ratio-limited secondary pressure and the reduction ratio-limited primary pressure having a gentle reduction gradient by limiting the reduction ratio, the generation of the undershoot on the actual secondary pressure and primary pressure can be prevented. By preventing the undershoot, the shortage of the torque capacity caused by the lowering of the hydraulic pressure is not generated. |
