Patent ID: 6477910
Filing Date: 2002-11-12
Classification: F16H,Y10T

Abstract:
An adjustment system in an automatic transmission including:an electric actuator for switching a shifting position by rotating a manual shaft; a shift operating unit for instructing said shifting position to output an instruction signal; a rotation position detecting unit for detecting a rotation angle of said manual shaft on the basis of an output signal corresponding to said rotation angle; a locating unit, which is provided with a concave and convex portion corresponding to said each shifting position, for locating said manual shaft by a detent pin getting over a convex to be fitted in a predetermined concave in shifting; and a controlling unit for driving and controlling said actuator until a rotation position, which is detected by said rotation position detecting unit in response to the receipt of the instruction signal from said shift operating unit, accords with the instructed shifting position, wherein the adjustment system comprises: an electric current detecting unit for detecting a driving current of said actuator; a shifting position calculating unit for calculating a shifting position of said manual shaft on the basis of detection by said electric current detecting unit of a change in the driving current of the actuator at the time when said detent pin gets over a convex to be fitted in a predetermined concave in shifting; and a rotation position detection learning unit for learning a relation between the shifting position calculated by said shifting position calculating unit and an output value of said rotation position detecting unit.