| 摘要 |
<p>A transmission ECU for controlling a lock-up clutch uses the difference (u*-u) between a target slip speed (u*) and an actual slip speed (u), proportional term gain (Kp), and integral term gain (Ki) to set (S150) a feedback term (FB) for an oil-pressure command value (Up), said feedback term (FB) including a proportional term (FBp) and an integral term (FBi), and uses the oil-pressure command value (Up) including the feedback term (FB) to implement (S160, S170) slip control which causes the actual slip speed (u), i.e. the difference in actual rotational speed between an engine and an input shaft of an automatic transmission, to match the target slip speed (u*). When implementing the slip control, the actual slip speed (u) is calculated (S130), and at least the integral term gain (Ki) is changed (S140) in accordance with the actual slip speed (u).</p> |
