Patent ID: 6389916
Filing Date: 2002-05-21
Classification: B60W,F16H,Y10T

Abstract:
A control device for a synchromesh automatic transmission comprising:an input shaft coupled to a crank shaft of a combustion engine through a clutch mechanism; an output shaft coupled to the input shaft by gears; a plurality of groups of transmission gears having different gear ratios and interposed between the input shaft and the output shaft; a coupling mechanism selectively coupling one of the plurality of groups of the transmission gears and the output shaft; a shifting and selecting actuator controlling a shifting position and a selecting position of the coupling mechanism; a shifting and selecting position sensor detecting a position controlled by the shifting and selecting actuator; and a control unit controlling a control input for the shifting and selecting actuator by a feedback of a position detected by the shifting and selecting position sensor, wherein the control unit detects a deviation between an actual control input of the shifting and selecting actuator and a target control input, and a lapse of time for changing the gears, and a next target control input is corrected based on the deviation and the lapse of time, using a quantity of the deviation as a learning value.