Observer design for uncertain nonlinear systems with unmodeled dynamics

This paper is concerned with the observer design problem for a class of multi-input-multi-output nonlinear systems with the unmodeled dynamics, unknown parameters and external disturbance. A dynamic signal, which can dominate the unmodeled dynamics, is firstly constructed. Then, two types of observer schemes, that is, adaptive observer and robust observer, are respectively proposed. The observation error in the two schemes can be made arbitrarily small by choosing the appropriate design parameters. An illustrative example is provided to demonstrate the validity of the proposed design methods.

[1]  Salim Ibrir,et al.  Adaptive observers for time-delay nonlinear systems in triangular form , 2009, Autom..

[2]  Mohammad Javad Yazdanpanah,et al.  Adaptive state observer for Lipschitz nonlinear systems , 2013, Syst. Control. Lett..

[3]  Hansheng Wu,et al.  Adaptive Robust State Observers for a Class of Uncertain Nonlinear Dynamical Systems With Delayed State Perturbations , 2009, IEEE Transactions on Automatic Control.

[4]  Wilfrid Perruquetti,et al.  A Global High-Gain Finite-Time Observer , 2010, IEEE Transactions on Automatic Control.

[5]  Alexander Medvedev,et al.  A state observer for continuous oscillating systems under intrinsic pulse-modulated feedback , 2012, Autom..

[6]  Tor Arne Johansen,et al.  Observers for interconnected nonlinear and linear systems , 2012, Autom..

[7]  Malek Ghanes,et al.  Observer Design for Nonlinear Systems Under Unknown Time-Varying Delays , 2013, IEEE Transactions on Automatic Control.

[8]  M. Krstić,et al.  Robustness of the tuning functions adaptive backstepping design for linear systems , 1998, IEEE Trans. Autom. Control..

[9]  Zhong-Ping Jiang,et al.  Design of Robust Adaptive Controllers for Nonlinear Systems with Dynamic Uncertainties , 1998, Autom..

[10]  Nicolas Boizot,et al.  An adaptive high-gain observer for nonlinear systems , 2010, Autom..

[11]  Hassan Hammouri,et al.  High Gain Observer for Structured Multi-Output Nonlinear Systems , 2010, IEEE Transactions on Automatic Control.

[12]  Mohammed M'Saad,et al.  Adaptive observers for nonlinearly parameterized class of nonlinear systems , 2009, Autom..

[13]  Ole Morten Aamo,et al.  Adaptive Redesign of Nonlinear Observers , 2011, IEEE Transactions on Automatic Control.

[14]  Jie Huang,et al.  A small gain approach to global stabilization of nonlinear feedforward systems with input unmodeled dynamics , 2010, Autom..

[15]  Riccardo Marino,et al.  Robust adaptive observers for nonlinear systems with bounded disturbances , 2001, IEEE Trans. Autom. Control..

[16]  Yusheng Liu,et al.  Robust adaptive observer for nonlinear systems with unmodeled dynamics , 2009, Autom..