Patent ID: 7306544

Claim:
A control apparatus for an automatic transmission having a friction transfer mechanism by which power is transferred by thrusting a friction side and an electric motor which controls a thrust load of said friction transfer mechanism, thrust force given by said motor being transferred to said friction side through a thrust force transfer member provided between said friction side and said motor, wherein when said friction side is thrusted by said electric motor, said electric motor is controlled by setting a period during which said thrust force transfer member is moved at a moving speed lower than that when beginning to move between a time said friction transfer mechanism begins to transfer power and a time said thrust force transfer member begins to move, and wherein said electric motor is controlled so that the thrust load of said friction transfer mechanism may be increased with a fixed inclination, at a first stage from the time said thrust force transfer member begins to move until a predetermined time elapses, the inclination of the thrust load of said friction transfer mechanism may be set to be smaller than that of the thrust load of said friction transfer mechanism at said first stage, at a second stage from said first stage until the predetermined time elapses further, and the thrust load of said friction transfer mechanism may be increased with an inclination larger than that of the thrust load of said friction transfer mechanism at said second stage, at a third stage from said second stage until the predetermined time elapses further.