Uniformly valid feedback expansions for optimal control of singularly perturbed dynamic systems

  • J. V. Breakwell
  • J. Shinar
  • H. G. Visser
Contributed Papers

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 equation 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    O'Malley, R. E.,Introduction to Singular Perturbations, Academic Press, New York, New York, 1974.Google Scholar
  2. 2.
    Wasow, W. R.,Asymptotic Expansions for Ordinary Differential Equations, Wiley-Interscience, New York, New York, 1964.Google Scholar
  3. 3.
    Eckhaus, W.,Matched Asymptotic Expansions and Singular Perturbations, North-Holland, Amsterdam, Holland, 1973.Google Scholar
  4. 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. 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. 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. 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. 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. 9.
    Shinar, J.,On Applications of Singular Perturbation Techniques in Nonlinear Optimal Control, Automatica, Vol. 18, No. 2, 1982.Google Scholar
  10. 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. 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

Authors and Affiliations

  • J. V. Breakwell
    • 1
  • J. Shinar
    • 2
  • H. G. Visser
    • 3
  1. 1.Department of Aeronautics and AstronauticsStanford UniversityStanford
  2. 2.Department of Aeronautical Engineering, TechnionIsrael Institute of TechnologyHaifaIsrael
  3. 3.Department of Aerospace and Ocean EngineeringVirginia Polytechnic InstituteBlacksburg

Personalised recommendations