| 摘要 |
In a shifting device which changes the gear ratio of a synchromesh-type transmission by using an electrically operated or controlled actuator, the actuator is controlled to stabilize or equalize the time durations required for effecting respective synchronizations. A driving signal for each of the synchronization controls is decided in accordance with a relationship between the driving signal to be applied to the actuator and a relative rotation number between an idle gear and a sleeve when the synchronization control is initiated. Prior to each synchronization control, the above relation is corrected based on four variables obtained at the latest synchronization control, including (i) an input rotation number deviation summation SIGMADELTANin, (ii) a synchronization time duration deviation DELTATSYN, (iii) an elapse-time input rotation number deviation DELTAdNinP, and (iv) a change grade deviation DELTAdNin. |
