| 摘要 |
<p>PROBLEM TO BE SOLVED: To quickly converge an overshot gear change ratio to a target gear change ratio even if the gear change ratio is abruptly changed in, for example, the acceleration of a vehicle, in a case that the gear change ratio of a continuously variable transmission 4 mounted to the vehicle is feedback-controlled so as to follow the target gear change ratio.SOLUTION: When an actual gear change ratio (for example, input shaft rotation speed Nin) exceeds a target gear change ratio (for example, target rotation speed Nint) and is overshot (from a time t4), a proportional gain Kof feedback control is increased for a prescribed time period (t4 to t5) by a gain correction part 8c, and gradually decreased after the lapse of a prescribed time period (t5 to t6).</p> |
