METHOD FOR CONTROLLING A NORMAL FORCE IN A FRICTIONAL CONTACT OF A CONTINUOUSLY VARIABLE TRANSMISSION

摘要

input pulley and the output pulley of the present invention comprises a continuously variable transmission of the frictional contact there is provided a method for controlling the normal force, between the input pulley and the output pulley, held between the two pulley discs of each respective pulley under the influence of the normal force and the variable transmission means is arranged to contact friction thereof with , as part of the control method, the normal force on one pulley is actively oscillated, the oscillation generation of the difference between the ratio thereof between the one or both of the rotational speed of the rotating speed of the input pulley and the output pulley is determined, at least one is the normal force is controlled depending upon the correlation between the said active oscillation and the oscillation generated. The method includes a correction step that the phase difference between the said active oscillation and the oscillation generated is determined,. ;