Health status assessment of stratospheric airship based on improved combination weighting and cloud model

In the context of stratospheric airship health assessment, this paper introduces an innovative methodology that combines composite weighting with a cloud model and incorporates a expert evaluation system. The objective is to provide comprehensive technical support for the evaluation of stratospheric airship health status. First, by examining possible hazards and malfunctions in the different stratospheric airship subsystems, an evaluation criterion system is created. Subsequently, composite weights are determined for these criteria through a combination of a expert evaluation system and the linear composite weighting method. Based on the defined evaluation set and standard cloud model specific to stratospheric airships, cloud models are generated for each indicator and the overall health assessment. Cloud similarity and membership degree computations are used to quantitatively evaluate each indicator's health. Lastly, a case study featuring a stratospheric airship trial is used to validate the methodology. Finally, the methodology is validated through a case study involving a trial of a stratospheric airship. The results demonstrate that the proposed approach, improved combination weighting and cloud model, effectively support the assessment of stratospheric airship health status. Furthermore, the incorporation of a expert evaluation system enhances the model’s applicability to the unique characteristics of stratospheric airships, thus providing a solid foundation for subsequent maintenance and safety control tasks in the field of stratospheric airship operations.