| 摘要 |
PURPOSE:To optimize change speed of transmission gear ratio by setting feedback gain so that it is increased corresponding to an opening degree of a throttle so as to achieve appropriate response and prevention of overshoot. CONSTITUTION:A control unit 300 is constituted of an input interface 311, a reference pulse generator 312, CPU 313, ROM 314, RAM 315, and an output interface 316. Also, signals from each of sensors 301 to 303, etc., of engine revolution number, car speed and a throttle opening degree are input and output to a step motor 110 so as to control change speed of transmission gear ratio. And a target input revolution speed is retrieved from the car speed and the throttle opening degree, and feedback gain is retrieved based on these values. A value of the feedback gain is set so that the larger it becomes the more the throttle opening degree is increased. Thus, overshoot can be prevented as appropriate response over the whole zone of the throttle opening degree. |
