Study On Space Station Operation On-Orbit Mission Re-Planning Method

An effective re-planning for space station on-orbit missions is an important guarantee to keep the space station operating steadily on the board for long duration.Based on the engineering practice of the China's space station,this dissertation has carried out research on re-planning methods for space station on-orbit missions.The main research contents and achievements are as follows:The conceptual model of the space station operation on-orbit mission re-planning is established.In order to realize the effective description of the space station operation on-orbit mission re-planning problem,the overall framework of re-planning is extracted by analyzing the background and requirement of the problem,the characters and difficulties of the re-planning problem are further described.The complicated restrictions during the re-planning are analysed considering the engineering practice.The conceptual model of the space station operation on-orbit mission re-planning is established based on the ontology model.The constrained processing method for the space station operation on-orbit mission re-planning is proposed.In order to realize the qualitative analysis of the complicated restrictions during the space station operation on-orbit mission re-planning,a constraint model is established.Considering the characters of complicated restrictions,different repair policies are proposed.And taking into account the propagation of complicated constraints,a backtracking iteration conflict resolving strategy is proposed.The space station operation on-orbit mission re-planning method for ne w tasks is proposed.In order to solve the new tasks generate during the space station on-orbit operation,the re-planning model for new tasks is established,and the primary restrictions during the re-planning are analysed.The objective of on-orbit mission re-planning is established considering the requirement of engineering.A mission re-planning optimization method for new tasks is proposed in combination with heuristic strategies and global optimization strategies.The space station ope ration on-orbit mission re-planning method for emergencies is proposed.In order to solve the emergencies generate during the space station on-orbit operation,the re-planning model for emergencies is established considering the complicated restrictions during the planning.The preprocessing strategies for emergencies are established considering the pop-up missions it could happen during the space station on-orbit operation.An adaptive constraints satisfaction re-planning method is proposed in combination with multiple adaptive solution strategies.Based on the demand of the China's space station engineering,this dissertation studies the technologies for the future mission re-planning problems.The research results of the paper further enrich and develop the technologies of the space station operation mission planning,it establishes the foundation of further developing the space station operation mission planning system for our country.