Patent ID: 6067493
Filing Date: 2000-05-23
Classification: F16H,Y10T

Abstract:
A speed change ratio controller for use with a continuously variable transmission of a vehicle, comprising:a speed change ratio varying mechanism for varying a speed change ratio of the continuously variable transmission,a speed change ratio servo device for controlling said speed change ratio varying mechanism according to an input signal,means for setting a final speed change ratio according to a vehicle traveling condition,means for computing a deviation between said final speed change ratio and a target speed change ratio,means for setting a target dynamic characteristic parameter according to said deviation so as to make said real speed change ratio coincide with said final speed change ratio,means for computing said target speed change ratio and a command speed change ratio based on said final speed change ratio and said target dynamic characteristic parameter, andmeans for outputting a signal corresponding to said command speed change ratio to said speed change ratio servo circuit.