Uniformly valid feedback expansions for optimal control of singularly perturbed dynamic systems
Contributed Papers
- 47 Downloads
- 11 Citations
Abstract
This paper shows how to construct a feedback control law for a class of singularly perturbed autonomous optimization problems. The control law is expressed as a single power series in the small parameter ∈ representing the ratio of the two effective time scales of the problem. The present approach avoids the need of expansion matching. The method is applied to a constant-speed interception problem. Comparison of numerical results with the exact solution shows an excellent agreement.
Key Words
Optimal control singular perturbations autonomous systems feedback control Hamilton-Jacobi-Bellmann equationPreview
Unable to display preview. Download preview PDF.
References
- 1.O'Malley, R. E.,Introduction to Singular Perturbations, Academic Press, New York, New York, 1974.Google Scholar
- 2.Wasow, W. R.,Asymptotic Expansions for Ordinary Differential Equations, Wiley-Interscience, New York, New York, 1964.Google Scholar
- 3.Eckhaus, W.,Matched Asymptotic Expansions and Singular Perturbations, North-Holland, Amsterdam, Holland, 1973.Google Scholar
- 4.Kokotovic, P. V., O'Malley, R. E., andSanutti, P.,Singular Perturbations and Order Reduction in Control Theory—An Overview, Automatica, Vol. 12, No. 2, 1976.Google Scholar
- 5.Freedman, M. I., andGranoff, B.,Formal Asymptotic Solution of a Singularly Perturbed Nonlinear Optimal Control Problem, Journal of Optimization Theory and Applications, Vol. 19, No. 2, 1976.Google Scholar
- 6.Ardema, M. D.,Solution of the Minimum Time-to-Climb Problem by Matched Asymptotic Expansions, AIAA Journal, Vol. 14, No. 7, 1976.Google Scholar
- 7.Wilde, R. R., andKokotovic, P. V.,Optimal Open-Loop and Closed-Loop Control of Singularly Perturbed Linear Systems, IEEE Transactions on Automatic Control, Vol. AC-18, No. 6, 1973.Google Scholar
- 8.Calise, A. J.,Singular Perturbation Methods for Variational Problems in Aircraft Flight, IEEE Transactions on Automatic Control, Vol. AC-21, No. 3, 1976.Google Scholar
- 9.Shinar, J.,On Applications of Singular Perturbation Techniques in Nonlinear Optimal Control, Automatica, Vol. 18, No. 2, 1982.Google Scholar
- 10.Visser, H. G., Shinar, J., andGuelman, M.,Analytical First-Order Corrections in Singularly Perturbed Nonlinear Control Problems, Proceedings of the 25th Israel Annual Conference on Aviation and Astronautics, pp. 269–284, 1983.Google Scholar
- 11.Guelman, M., andShinar, J.,Optimal Guidance Law in the Plane, Journal of Guidance and Control, Vol. 7, No. 4, 1984.Google Scholar
Copyright information
© Plenum Publishing Corporation 1985