| 摘要 |
A compression control device for a continuously variable transmission, wherein a compression control means (U) that controls the compression of one or another shaft element (13, 14) of a continuously variable transmission (TM) calculates a slip state matrix ({A}) from the amplitude ratio (m) of the variation component of the rotational speed of an input shaft (11) and the variation component of the rotational speed of an output shaft (12), from a phase delay (φp.DN) that is obtained by indexing the phase difference between the variation component of the rotational speed of the input shaft (11) and the variation component of the rotational speed of the output shaft (12), and from the transmission gear ratio (i) between the input shaft (11) and the output shaft (12), estimates, on the basis of an eigenvalue sequence that is calculated from the slip state matrix ({A}), the power transmission state between an input shaft element (13), an output shaft element (14), and a power transmission element (15), and controls compression on the basis of the power transmission state. As a result, the present invention can accurately determine the slip state of the power transmission element from the amplitude ratio (m), the phase delay (φp.DN), and the transmission gear ratio (i), which can be measured without the need for a special sensor, and can control compression in the vicinity of a friction transmission limit and achieve high power transmission efficiency. |
