| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To actualize a structure which can secure reliability of a learning value related to the step position of a stepping motor which becomes the reference of transmission gear ratio control of a toroidal type continuously variable transmission. <P>SOLUTION: A controller displaces a support member supporting a power roller, and determines whether pressure difference between one pair of mutual oil pressure chambers provided in an actuator which changes the gear ratios of both disks of input side and output side is within a predetermined range. When the pressure difference is determined to be out of the predetermined range, the execution of the learning control by the controller is inhibited. Thereby, it becomes possible to accurately learn the step position where the gear ratio being in a state of infinity can be actualized to solve the problem. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
