| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a control over a hydraulic pressure to be well controlled just after an engaged state is varied by a method wherein there are provided an engaged state adjusting means for supplying hydraulic oil in response to an indicated controlling amount and adjusting an engaged state of a frictional engaging means and a control calculation means for calculating a controlled variable of a variation in the lapse of time. SOLUTION: Hydraulic oil is rapidly fed to a hydraulic cylinder (101). An initial value d0 of a control duty (dn) and a coefficient (k) are calculated (103, 105). A driving control is carried out (107) in which the control duty (dn) is calculated and a solenoid valve is opened with the control duty (dn). It is discriminated if a feed-back condition is established (111, 113). The control duty (dn) is increased along a next n-th degree curve until the feedback condition is established (107). The feed-back control is executed (115) and this operation is repeated until a clutch is completely engaged and a transmission is completed. In this way, the control duty (dn) is gradually varied in response to a mono-tone increasing state, so that it is possible to keep a variation of hydraulic pressure applied to the clutch at a substantial constant value.</p> |
