| 摘要 |
PURPOSE:To improve convergence in change gear control by determining a change gear speed from the target variation of a phase-lead element corresponding to the delay of a driving system and determining a manipulated variable from said change gear speed and an actual change gear ratio. CONSTITUTION:Signals from sensors 41, 42, 44 are read, and an actual change gear ratio (i) is obtained by an actual change gear ratio calculating part 45, a target change gear ratio (is) is obtained by a target change gear ratio retrieving part 46, a target change gear ratio variation speed is obtained by a target change gear speed calculating part 47, and a change gear speed di/dt is obtained by a change gear speed calculating part 49, in a control unit 40. And a duty ratio is retrieved from the change gear speed and the actual change gear ratio by a duty ratio retrieving part 50 and inputted into a solenoid valve 28 to operate a change gear speed control valve. In this control, a phase lead element from the variation speed of the target change gear ratio is included, to determine a manipulated variable. Accordingly, the convergence of the actual change gear ratio into the target change gear ratio can be improved. |
