SYSTEM AND METHOD FOR CONTROLLING MOTION OF SPACECRAFT IN MULTI-OBJECT CELESTIAL SYSTEM

To provide a system and method for controlling a motion of a spacecraft in a multi-object celestial system while avoiding an unauthorized entry into a keep-away region during a normal operation and an abnormal operation of the spacecraft.SOLUTION: The method includes executing, during the normal operation of the spacecraft, a nominal control law subject to constraints on maintaining a state of the spacecraft within a union of a plurality of control invariant sets of values of the state of the spacecraft. The state of the spacecraft includes a location of the spacecraft, and at least one or a combination of a velocity and an acceleration of the spacecraft. The method further includes executing, upon detecting the abnormal operation of the spacecraft, an abort control law associated with the control invariant set including a current state of the spacecraft.SELECTED DRAWING: Figure 8 【課題】本開示は、多物体天体系において、宇宙機の正常動作および異常動作中にキープアウェイ領域への無許可進入を回避しながら、宇宙機の運動を制御するためのシステムならびに方法を提供する。【解決手段】本方法は、宇宙機の正常動作中に、宇宙機の状態の値の複数の制御不変集合の和集合内に宇宙機の状態を維持することに対する制約を受ける公称制御法則を実行することを含む。宇宙機の状態は、宇宙機の位置と、宇宙機の速度および加速度の少なくとも１つまたは組み合わせとを含む。本方法は、宇宙機の異常動作を検出すると、宇宙機の現在の状態を含む制御不変集合に関連付けられるアボート制御法則を実行することをさらに含む。【選択図】図８