|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 12 인용 특허 : 3|
A Stationkeeping Mode for a spacecraft having a gimballed momentum wheel for attitude control in which the stationkeeping is divided into short duration open-loop stationkeeping maneuvers to correct orbital errors, and interlaced with closed-loop momentum management operations to manage momentum stored in the momentum wheel. The sequence of open-loop pulses are spaced to deadbeat a given dominant flexible motion of the spacecraft. Between and during the thruster pulses, the gimbaled momentum wheel is maintained in the closed-loop feedback control using g...
1. A method for attitude control of a spacecraft having a set of rigidly attached thrusters and a gimballed momentum wheel, said method comprising:detecting an error in the orbit of the spacecraft; selecting at least one thruster to be fired as part of an orbit correction maneuver, and a total maneuver duration Ttot for execution of the correction maneuver; selecting at least one thruster to be fired to level and maintain the rotational speed of the momentum wheel, and a momentum management thruster pulse duration Tj for j=1, 2, . . . n; dividing the man...