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Attitude control of a flexible space vehicle by means of a linear state observer

Published online by Cambridge University Press:  04 July 2016

D. R. Smart
Affiliation:
Electronic and Space Systems Group, British Aircraft Corporation, Filton, Bristol
K. F. Gill
Affiliation:
Department of Mechanical Engineering, University of Leeds

Extract

The two philosophies for the attitude control of flexible space vehicles that appear practicable are: firstly, the complete control of all the plant states, in the sense that all states tend to some bounded value as time tends to infinity; and secondly, to control the rigid body to lie within some bounded region and allow the vibrations within the structure to behave in an uncontrolled manner. If the former strategy is implemented, not only is the attitude of some part of the structure, for example a radio antenna, controlled to lie within some bounded region, but the modes of structural vibration are also explicitly controlled. The second method requires less state information than the first and is the less complex of the two.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1975 

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References

1. Smart, D. R., Gill, K. F., Gething, J. M. and Holt, J. A. Dynamic analysis of flexible space vehicles having uncoupled control axes. The Aeronautical Journal of the Royal Aeronautical Society, Vol 78, pp 560569. December 1974.Google Scholar
2. Hughes, W. G. Design for high precision in spacecraft jet attitude control systems, Royal Aircraft Establishment Technical report 71089, April 1971.Google Scholar
3. Luenberger, D. G. Observing the state of a linear system, IEEE Transactions on Military Electronics, Vol MIL-8, April 1964, pp 74–80.Google Scholar
4. Luenberger, D. G. Observers for multivariable systems, IEEE Transactions on Automatic Control, Volume AC-11, No 2, April 1966, pp 190–197.Google Scholar
5. Bongiorno, J. J. and Youla, D. C. On observers in multivariable control systems, International Journal of Control, Volume 8, No 3, pp 221243.Google Scholar
6. Sarma, V. V. S. and Deekshatulu, B. L. Optimal control when some of the state variables are not measurable, International Journal of Control, Volume 7, No 3, 1968, pp 251256.Google Scholar
7. Newmann, M. M. Design algorithms for minimal-order Luenberger observers, Electronics Letters, 21st August 1969, Volume 5, No 17, pp 390392.Google Scholar
8. Cumming, S. D. G. Design of observers of reduced dynamics, Electronics Letters, 15th May 1959, Volume 5, No 10, pp 213214.Google Scholar
9. Crossley, T. R. and Porter, B. Modal theory of state observers, Proceedings of the IEE, Volume 118, No 12, December 1971.Google Scholar
10. Newmann, M. M. Optimal and sub-optimal control using an observer when some of the state variables are not measurable, International Journal of Control, Volume 9, No 3, 1969, pp 281290.Google Scholar
11. Kalman, R. E. and Bucy, R. S. New results in linear filtering and prediction theory, Transactions of the ASME, Series D, Journal of Basic Engineering, March 1961, pp 95108.Google Scholar
12. Malman, R. E. On the general theory of control systems, Proceedings of the First International Conference on Automatic Control, Moscow, USSR, 1960.Google Scholar
13. Barnett, S. and Storey, C. Matrix methods in stability theory. Thames Nelson and Sons Ltd, G.B., 1970.Google Scholar