| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device of an automatic transmission, which determines the magnitude of vibration/noise (NV) generated by the slip control of a lockup clutch, and raises a target value of the slip control up to the limit in which both of reduction of the vibration/noise and fuel economy performance can be achieved through learning. SOLUTION: The vibration/noise (NV) generated by the slip control of the lockup clutch is detected based on the variation amount DNC of the output rotating speed of the automatic transmission, and the learning value of the target value of slip control is calculated in accordance with transmission characteristics of the vibration/noise when a region defined by a state amount correlated to the vibration/noise is in a prescribed learning region, and the calculated learning value is reflected on a region adjacent to the prescribed learning region (S312), the target value is corrected by the learning value, and a corrected target value is calculated (S314), and the lockup clutch is slip-controlled in accordance with the corrected target value when the detected vibration/noise exceeds the allowance value (S300-S310). COPYRIGHT: (C)2011,JPO&INPIT
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