Empirical Data Driven Model for Sail Membrane Dynamics Estimation

抄録

In order to predict the sail membrane dynamics precisely, it is necessary to use the on-orbit measurement data. However, the on-orbit sail membrane measurement data are incomplete (missing spatio-temporal data) because of sensor placement limitations and sunlight reflection. This paper proposes an empirical data driven model in which past measurement data and current incomplete measurement data are used to estimate sail membrane dynamics and the confidence intervals of the estimated dynamics are obtained via a bootstrap method. Further, the applicability of the proposed empirical data driven model is evaluated via numerical and vacuum chamber experiments. The experimental model used comprises a spin deployable space membrane structure consisting of a square membrane, a center hub, and tethers.