A Fast Detection Method for Logical Conditions Unsatisfactory Action Sets in Spacecraft Planning Sequence

Abstract

The invention discloses a rapid detection method for a logic condition not satisfying an action set in a spacecraft planning sequence, and belongs to the field of spacecraft autonomous task planning and repair. The present invention combines the logical state of the spacecraft at that time and the unexecuted planning sequence, performs constraint propagation according to the causal relationship between the premise and effect, and analyzes the relationship between the logical preconditions that need to be satisfied in the execution of actions in the planning sequence and the logical state of the spacecraft at that time. relationship, detect the action set directly affected by the current spacecraft logic state; perform constraint propagation again according to the causal relationship between the premise and effect, and analyze the logical preconditions that need to be satisfied and the action set directly affected by the current spacecraft logic state The relationship between action effects detects the set of actions that are indirectly affected by the current spacecraft logic state; directly skips actions that appear within the range of influence, and autonomously avoids actions that do not meet the logic conditions. The invention has the advantages of high self-detection efficiency, good versatility and simple realization.

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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