Robust estimation of interconnected systems subject to sensor nonlinearities

Authors

  • Magdi S. Mahmoud,

    Corresponding author
    1. Systems Engineering Department, King Fahd University of Petroleum and Minerals, P. O. Box 5067, Dhahran, Saudi Arabia
    • Correspondence to: Magdi S. Mahmoud, Systems Engineering Department, King Fahd University of Petroleum and Minerals, P. O. Box 5067, Dhahran 31261, Saudi Arabia.

      E-mail: msmahmoud@kfupm.edu.sa

    Search for more papers by this author
  • Fouad M. AL-Sunni

    1. Systems Engineering Department, King Fahd University of Petroleum and Minerals, P. O. Box 5067, Dhahran, Saudi Arabia
    Search for more papers by this author

SUMMARY

An efficient robust LMI-based scheme is developed for decentralized state-estimation of linear interconnected systems with static nonlinear interconnections and subjected to sensor nonlinearities. The interconnections satisfy quadratic constraints with manipulated parameters and the sensor nonlinearities are modeled as sector nonlinearities. The design procedure utilizes a general linear estimator structure and consists of two steps: the first giving a block-diagonal Lyapunov matrix together with the robustness degree and the second determining the filter parameters. A numerical example is provided to illustrate the applicability of the method. Copyright © 2012 John Wiley & Sons, Ltd.

Ancillary