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As the process of traditional dynamics modeling for rigid-flexible couple system is complex, this paper introduces the theory of characteristic modeling to simplify the modeling process. Unlike other reduced-order models, characteristic model compresses the high-order information into the characteristic parameters. Therefore, it will not lose model information. In addition, in order to improve the...
For the complex spacecraft with large flexible accessories, suppressing the flexible vibration is a significant problem. Based on singular perturbation theory, the combination control method is proposed, which associates nonlinear PID controller and linear quadratic controller by dividing spacecraft dynamics equations into slow-change subsystem and quick-change subsystem. The slow-change subsystem...
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