Rapid detection method for situation that logic conditions in spacecraft planning sequence do not meet action set

Abstract

The invention discloses a rapid detection method for a situation that logic conditions in a spacecraft planning sequence do not meet an action set, which belongs to the field of spacecraft autonomoustask planning repair. According to the method, the current logic state of the spacecraft and the unexecuted planning sequence are combined, constraint propagation is carried out according to the causal relationship between the prerequisites-effects, and the relationship between the logic prerequisite conditions needing to be met by action execution in the planning sequence and the current logic state of the spacecraft is analyzed; an action set directly influenced by the current logic state of the spacecraft is detected; constraint propagation is conducted again according to the causal relationship between the prerequisites-effects, the relationship between the logic premise conditions needing to be met and the action effects in the action set directly affected by the logic state of the current spacecraft is analyzed, and the action set indirectly affected by the logic state of the current spacecraft is detected; and actions appearing in an influence range are directly skipped, and actions which do not meet logic conditions are autonomously avoided. The method has the advantages of being high in autonomous detection efficiency, good in universality and easy to implement.

Description

technical field [0001] The invention relates to a rapid detection method for a logic condition in a spacecraft planning sequence not satisfying an action set, and belongs to the technical field of spacecraft autonomous task planning and repairing. Background technique [0002] With the continuous progress and development of artificial intelligence technology, the autonomy of spacecraft has gradually become one of the hot research directions in the aerospace field. For near-Earth spacecraft, the uploading of its task operation instructions is limited to the measurement and control arc of the ground station, which restricts the timely detection and quick resolution of ground-to-execution faults; Due to the huge time delay, relying only on the ground to provide the sequence of mission execution instructions will miss the best time for fault repair, causing the entire mission to lag or even fail. Therefore, the spacecraft needs to have the ability of autonomous mission planning...

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Problems solved by technology

[0004] In view of the fact that most of the existing mission planning repair algorithms do not consider the actual execution situation, the obtained repair sequence cannot be directly applied. The purpose of the present invention is to provide a fast detection method for the logic condition in the spacecraft planning sequence that does not satisfy the action set. In the execution phase of the spacecraft mission planning sequence, in view of abnormal changes in the state of the spacecraft, through the constraint propagation analysis of the causal relationship in the planning sequence, quickly detect the set of actions that do not meet the logical conditions, thereby isolating the affected part of the action Sequence, to realize that the spacecraft can autonomously avoid the action that the logic condition is not satisfied when continuing to execute the mission planning sequence

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