Patent ID: 6146307
Filing Date: 2000-11-14
Classification: F16H,Y10T

Abstract:
A speed ratio controller for controlling a speed ratio of a transmission of a vehicle in a predetermined control cycle, said controller comprising:a sensor for detecting a running condition of the vehicle,a sensor for detecting a real speed ratio of the transmission, anda microprocessor programmed to:calculate a transient target speed ratio of the transmission based on said vehicle running condition,calculate a deviation between said real speed ratio and said transient target speed ratio,calculate a feedback correction amount based on said deviation,calculate a command value based on said transient target speed ratio and said feedback correction amount,control a speed ratio of said transmission based on said command value,calculate a difference between said command value and a command value applied in a previous control cycle, andsuppress increase of said feedback correction amount in a following control cycle when said difference is larger than a predetermined value.