| 摘要 |
PURPOSE: To stabilize the shift control without feeding back the offset of a friction wheel, ensure the stableness at a low cost, and enhance the control accuracy. CONSTITUTION: A circuit 10 to make offset control of a power roller 3 in the vertical direction when a gear shift is to be made, includes a deciding part 11 to determine the target input engine speed Ni * from the throttle opening TVO and car speed VSP, another deciding part 12 to determine the target gearing ratio i* corresponding to Ni *, and a third deciding part 13 to determine the rotational angle STEPFF of a motor 6 for attaining i*. A sensing part 14 determines the varying velocityΔi of the actual gearing ratio to be determined from the input engine speed Ni and car speed VSP, and a correction part 15 corrects STEPFF and gives a command to the motor 6 so that the variation of the gearing ratio is suppressed with rise ofΔi. with this correction, stabilization of the control is achieved, and there is no more necessity for a cam 7 to feed back the offset to a valve 5. |
