Advertisement

Failure Compensation for Nonlinear Systems

  • Gang Tao
  • Shuhao Chen
  • Xidong Tang
  • Suresh M. Joshi
Chapter

Abstract

The adaptive actuator failure compensation problem has been addressed so far for linear systems with actuator failures characterized by inputs stuck at some values fixed or variant not influenced by control action. Both the failure patterns and the failure parameters including failure values and failure time are assumed unknown. However, most real-life systems are nonlinear dynamic systems, for example, aircraft flight control systems. Actuator failure compensation for nonlinear systems is an area of major interest. In the following chapters we further our research to several classes of nonlinear systems, whose dynamics can be transformed into some canonical forms that are subject to actuator failures. A key issue of direct adaptive control is the parametrization of the nonlinear system with actuator failures and the applied feedback control scheme for a given control objective under certain matching conditions. Based on a suitable parametrization, an adaptive scheme can be used to update the controller parameters for the case when the plant parameters and actuator failure parameters are both unknown.

Keywords

Output Feedback Failure Pattern Output Tracking Zero Dynamic Actuator Failure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag London 2004

Authors and Affiliations

  • Gang Tao
    • 1
  • Shuhao Chen
    • 1
  • Xidong Tang
    • 1
  • Suresh M. Joshi
    • 2
  1. 1.Department of Electrical and Computer EngineeringUniversity of VirginiaCharlottesvilleUSA
  2. 2.Langley Research CenterDynamics and Control Branch, NASAHamptonUSA

Personalised recommendations