公开(公告)号：FR2678894B1

公开(公告)日：1993-11-19

申请号：FR9108593

申请日：1991-07-09

Applicant: AEROSPATIALE STE NATIONALE INDLE

Inventor： FLAMENT PATRICK

IPC: B64G1/28 ,  B64G1/36 ,  G05D1/08

Abstract: For the method for controlling the roll and yaw attitude of a three-axes stabilised satellite comprising a wheel system generating a permanent kinetic moment substantially parallel to the pitch axis and having a variable component at least approximately parallel to the roll-yaw plane and a continuously acting actuation system, the attitude of the satellite is detected (21) in roll and/or in yaw, control signals derived by a fast servocontrol loop (24) according to a known fast servocontrol law are applied to the wheel system and second control signals derived by a slow servocontrol loop (25) according to a known slow servocontrol law are applied to the continuously-acting actuation system. This continuously-acting actuation system is activated in a fixed direction of the satellite, parallel to this variable component if the latter is fixed in direction, and at least one first complementary control signal TW is furthermore applied to the wheel system, the signal being chosen so as to bring the component of the kinetic moment along this fixed direction to a value suitable for compensating, in the long term, for the drift of the kinetic moment along a second fixed direction, and a second complementary control signal is applied to the continuously-acting actuation system, produced so as to cancel out the effect of the first signal on the attitude along this second fixed direction.