Patent ID: 6470765
Filing Date: 2002-10-29
Classification: F16H,Y10T

Abstract:
A synchronous mesh-type automatic transmission control device comprising:an input shaft coupled with a crank shaft of an internal combustion engine through a clutch, a coupling mechanism including plural transmission sets, wherein each transmission set has a pair of transmission units with a different transmission ratio to each other, a select and shift actuator for selecting one of said plural transmission sets based on a select position and for selecting one of said pair of transmission units in the selected one of said plural transmission sets based on a shift position, an output shaft coupled with said input shaft through the selected one of said pair of transmission units in the selected one of said plural transmission sets, a select and shift position sensor for outputting a select position signal according to said select position of said select and shift actuator and a shift position signal according to said shift position of said select and shift actuator, and a control means for generating a driving signal varied on a rotating speed difference of said input shaft and said output shaft and for driving said select and shift actuator by an operating speed based on said driving signal.