Skip to main content
Log in

Existence and uniqueness of minimal realizations of nonlinear systems

  • Published:
Mathematical systems theory Aims and scope Submit manuscript

Abstract

In the theory of finite dimensional linear systems, it is well known that every input-output map that can be realized by one such system can also be realized by a system which is “minimal”, i.e. both controllable and observable. Moreover, the minimal realization of a given map is unique up to isomorphism. It is shown here that similar results hold for the class of all systems whose state space is a real analytic manifold, whose dynamics is given by a family of complete real analytic vector fields, and whose output is an arbitrary real analytic function on the state space.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. R. L. Bishop andR. J. Crittenden,Geometry of Manifolds, Academic Press, New York, 1964.

    Google Scholar 

  2. R. W. Brockett, System theory on group manifolds and coset spaces,SIAM, J. Control 10 (1972), 265–284.

    Google Scholar 

  3. R. W. Brockett, Lie theory and control systems defined on spheres, presented at the Drexel University-SIAM Conference on Lie algebras; Applications and Computational Methods, Phila., Pa., June, 1972.

  4. R. W. Brockett, Algebraic decomposition methods for nonlinear systems, in “Systems Structure”,IEEE Special publication, No. 71CG1-CSS, August, 1971 (S. Morse, Editor).

  5. R. W. Brockett, On the algebraic structure of bilinear systems, inVariable Structure Control Systems, (R. Mohler and A. Ruberti, eds.), Academic Press, 1972, 153–168.

  6. E. A. Coddington andN. Levinson,Theory of Ordinary Differential Equations, McGraw-Hill, N.Y., 1955.

    Google Scholar 

  7. D. L. Elliott, A consequence of controllability,J. Diff. Equations 10 (1971), 364–370.

    Google Scholar 

  8. D. L. Elliott andT. J. Tarn, Controllability and observability for bilinear systems, presented at theSIAM 1971 National Meeting, University of Washington, Seattle, Wash., June 28–30, 1971.

  9. G. W. Haynes andH. Hermes, Nonlinear controllability via Lie theory,SIAM J. Control 8 (1970), 450–460.

    Google Scholar 

  10. H. Hermes, On necessary and sufficient conditions for controllability along a reference trajectory, inGeometric Methods in System Theory, (D. Q. Mayne and R. W. Brockett, eds.), D. Reidel Pub. Co., 1973, 165–173.

  11. R. Hermann. On the accessibility problem in control theory, in “International Symposium on Nonlinear Differential Equations and Nonlinear Mechanics”, 325–332, Academic Press, N.Y., 1963.

    Google Scholar 

  12. R. E. Kalman, P. Falb andM. Arbib,Topics in Mathematical System Theory, McGraw-Hill, N.Y., 1969.

    Google Scholar 

  13. A. Krener, A generalization of Chow's theorem and the bang-bang theorem to nonlinear control problems,SIAM J. Control 12 (1974), 43–52.

    Google Scholar 

  14. C. Lobry, Controlabilité des systémes non linéaires,SIAM J. Control 8 (1970),573–605.

    Google Scholar 

  15. J. P. Serre,Lie Groups and Lie Algebras, Benjamin Press, N.Y., 1965.

    Google Scholar 

  16. T. Nagano, Linear differential systems with singularities and an application to transitive Lie algebras,J. Math. Soc. Japan 18 (1966), 398–404.

    Google Scholar 

  17. V. Jurdjevic andH. J. Sussman, Control systems on Lie groups,J. Diff. Equations 12 (1972), 313–329.

    Google Scholar 

  18. H. J. Sussmann andV. Jurdjevic, Controllability of nonlinear systems,J. Diff. Equations 12 (1972), 95–116.

    Google Scholar 

  19. H. J. Sussmann, Orbits of families of vector fields and integrability of systems with singularities,Bull. Amer. Math. Soc. 79 (1973), 197–199.

    Google Scholar 

  20. H. J. Sussmann, Orbits of families of vector fields and integrability of distributions,Trans. Amer. Math. Soc. 180 (1973), 171–188.

    Google Scholar 

  21. H. J. Sussmann, A generalization of the closed subgroup theorem to quotients of arbitrary manifolds,J. Diff. Geometry 10 (1975), 151–166.

    Google Scholar 

  22. H. J. Sussmann, Minimal realizations of nonlinear systems, paper presented at the NATO Advanced Study Institute on “Geometric and Algebraic Methods for Nonlinear Systems”, Imperial College, London, Aug. 27–Sept. 7, 1973.

    Google Scholar 

  23. H. J. Sussmann, Minimal realizations and canonical forms for bilinear systems, J. Franklin Institute, to appear.

  24. H. J. Sussmann, On quotients of manifolds: a generalization of the closed subgroup theorem,Bull. Amer. Math. Soc. 80 (1974), 573–575.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Research partially supported by NSF Grant GP-37488.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Sussmann, H.J. Existence and uniqueness of minimal realizations of nonlinear systems. Math. Systems Theory 10, 263–284 (1976). https://doi.org/10.1007/BF01683278

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01683278

Keywords

Navigation