| 主权项 |
1. A control apparatus for an automatic transmission, the automatic transmission comprising:
an input shaft to which a driving force is input; an output member; a plurality of planetary gear mechanisms configured to transmit the driving force input to the input shaft to the output member; and a plurality of engaging mechanisms capable of establishing a plurality of gear ranges by switching a transmission path of the driving force in the plurality of planetary gear mechanisms, wherein one of the plurality of engaging mechanisms comprises a mechanical engaging mechanism configured to function as a brake, the mechanical engaging mechanism can be switched between a first state in which rotation of a predetermined rotational element out of a plurality of rotational elements included in the plurality of planetary gear mechanisms is restricted only in one direction and a second state in which the rotation of the predetermined rotational element is restricted in both directions, the plurality of gear ranges include at least one forward range that can be established in the first state of the mechanical engaging mechanism, and a reverse range to be established in the second state of the mechanical engaging mechanism, the control apparatus comprises: a detection unit configured to detect a shift position; and a control unit configured to control the plurality of engaging mechanisms, the control unit executes switching control to switch the mechanical engaging mechanism from the first state to the second state when the detection unit detects that the shift position is switched to the reverse range and the mechanical engaging mechanism is in the first state, in the switching control, after a plurality of predetermined engaging mechanisms other than the mechanical engaging mechanism out of the plurality of engaging mechanisms are controlled to an engaging state, the mechanical engaging mechanism is switched from the first state to the second state, the control unit starts pre-engagement control to engage at least one engaging mechanism out of the plurality of predetermined engaging mechanisms when a first condition is met, and the first condition includes a condition that the mechanical engaging mechanism is in the first state and the automatic transmission is under a lowest-speed forward range. |
