Key Technology Of System Of Systems Resilience Analysis And Design

With the rapid progress of technology and weapons,the pace of war has been accelerating and the intensity of confrontation has increased.The complex and changeable battlefield environment puts forward higher requirements on the capability of combat System of Systems(So S).At the same time,the complexity of the internal structure of combat So S makes it face the threat of unstable working state.The dual effects of internal and external environment bring destruction and interference to the capability state of the combat So S to a certain extent,and put forward higher requirements for the resilience of the combat So S.In the complex internal and external environment,the combat So S needs to have certain resilience,mainly including:absorption capability,that is,the ability to absorb destructive interference,so as to reduce the decline of the So S capability;Recoverability,the ability to recover quickly from a state of capability loss.This paper focuses on the definition,evaluation and optimization of So S resilience in the information age from the following aspects:(1)Explore the definition of So S resilience and the thinking of analysis and designCombined with the characteristics of the So S and the general concept of resilience,the definition and explanation of So S resilience are given.Based on the analysis of the So S capability change process oriented to resilience,a system resilience analysis method based on capability change process was proposed.Then,the design principle of So S resilience and the method to optimize So S resilience were given from the influence factors of resilience.(2)A method of So S resilience analysis based on hierarchical structure model of So SThe hierarchical model of the So S is introduced,and the evaluation index of the system resilience is given.Based on the hierarchical model,the influence relationship between system layer and activity layer as well as activity layer and capability layer are studied respectively.The relationship between the system layer and the activity layer was established using the influence propagation analysis method.We use Bayesian network method to analyze the association between activity layer and capability layer,The relationship between the bottom system and the top capability of the So S is established,and the change process of the system capability is calculated.The resilience of the So S is calculated according to the process of So S capability change.(3)The system importance evaluation method is proposedBased on the analysis process of So S resilience,the influence of system efficiency change on So S capability is analyzed.The importance of the system in the So S was determined from different angles,and the resilience map was drawn based on the results of the calculation of the system importance.The evaluation method of system importance points out the direction for the design optimization of So S resilience.(4)A So S resilience design method based on system function reinforcement and function redundancy is proposedAccording to the results of the system importance evaluation,the damaged functions of the system that have not been fully restored should be strengthened.The design optimization of So S resilience was carried out to maximize system resilience with resource restriction.For the damaged system that cannot be fully recovered,the combat activities that cannot be completed due to its damage can also be assigned to the system with the same function to maximize the functional requirements of combat activities,so as to achieve the purpose of resilience optimization.