柔構造特性を考慮した高精度アンテナ指向制御方式

概要

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For intersatellite communication, precise antenna-pointing control with wide range and high scanning rate is required. For this purpose, the antenna-pointing mechanism with two degrees of freedom driven by step motors is used. Because structural vibration modes in the controller bandwidth degrade the performance of antenna-pointing control and spacecraft-attitude control, we require antenna-pointing control without excitation of the vibration modes. In this paper, we propose a new antenna control scheme having the function of active vibration control. Its robustness against modelling errors is examined by the normalized coprime factorization approach. Numerical simulations and hardware experiments have been carried out in order to verify not only the controlscheme but also the modelling technology. It is concluded that the proposed control scheme is more effective in suppressing the vibration modes as compared with a conventional control scheme.
社団法人日本機械学会の論文
1995-09-25