Nonlinear Adaptive Backstepping with Estimator Resetting Using Multiple Observers

  • Authors:
  • Jens Kalkkuhl;Tor Arne Johansen;Jens Lüdemann;Andreas Queda

  • Affiliations:
  • -;-;-;-

  • Venue:
  • HSCC '01 Proceedings of the 4th International Workshop on Hybrid Systems: Computation and Control
  • Year:
  • 2001

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Abstract

A multiple model based observer/estimator for the estimation of parameters is used to reset the parameter estimation in a conventional Lyapunov based nonlinear adaptive controller. The advantage of combining both approaches is that the performance of the controller with respect to disturbances can be considerably improved while a reduced controller gain will increase the robustness of the approach with respect to noise and unmodeled dynamics. Several alternative resetting criteria are developed based on a control Lyapunov function.