|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||364/459 ; 244/166|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 2 인용 특허 : 11|
An attitude control system using magnetic torquing is enhanced using a momentum wheel which is pivoted if the sensed error signal about the roll axis exceeds a given threshold. The momentum wheel is pivoted under control of a stepping motor through a first angle proportional to the detected average roll error, and one-half nutation period later through an equal angle in the same direction. Alternatively, the momentum wheel is pivoted over first and second angles of different values wherein the difference is related to nutation.
An attitude control system for a spacecraft having a momentum bias comprising: a momentum wheel spinning about an axis substantially parallel to a first axis of said spacecraft to produce angular momentum for providing said momentum bias; means for rotating the angular momentum of said momentum wheel with respect to said spacecraft; means for providing an attitude error signal responsive to angular deviation of the spacecraft about one or more axes perpendicular to the first axis; magnetic torquing means for providing, when energized, magnetic dipoles fo...