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Flexible space structure robust vibration control

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3 Author(s)
Lin, C.-F. ; American GNC Corp., Chatsworth, CA, USA ; Ping-An Bao ; Braasch, S.

This paper is a comparison between integral plus fuzzy logic control and LQR plus H robust control as demonstrated on a flexible platform to improve space structure vibration control. Reusable launch vehicle components demand a micro-acceleration attenuation system, as opposed to stiffening these components at a tremendous weight cost. Also, these control systems are applicable to pointing/placing a payload in orbit. These systems will alleviate difficulties associated with the lack of an accurate pre-launch space structure dynamic model. An analysis of the open-loop characteristics of an isolated platform demands an investigation of both an integral plus fuzzy logic vibration controller and a robust vibration controller, an LQR inner loop and an H outer loop. The benefits and limitations of these controllers are analyzed

Published in:

American Control Conference, 1999. Proceedings of the 1999  (Volume:6 )

Date of Conference:

1999