Adaptive Control of Nonlinear Time-Delay Systems

Abstract

This project concerns the development of adaptive control of linear and nonlinear dynamic system in the presence of unknown time-delays. Over the past three years, we have used the following three approaches to make inroads into this very difficult problem. These include: Use Lyapunov-Krasavoskii functionals to develop controller structure and adaptive laws that will guarantee a stable adaptive system when the delay is unknown. Represent time-delay as an unknown parameter and treat the underlying system as being nonlinearly parameterized, and develop adaptive methods for nonlinearly parameterized systems. Develop adaptive methods in the presence of uncertainties due to failures and actuator saturation so that they can be integrated into the solutions using either of the above two approaches. The results obtained are summarized in the final report, three technical reports, and several conference publications.

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 2005
Accession Number
ADA441542

Entities

People

  • Anuradha M. Annaswamy

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Actuators
  • Adaptive Filters
  • Adaptive Systems
  • Aircrafts
  • Closed Loop Systems
  • Complex Systems
  • Control Systems
  • Control Systems Engineering
  • Engineering
  • Estimators
  • Fixed Wing Aircraft
  • Flight Control Systems
  • Mechanical Engineering
  • Nonlinear Systems
  • Polynomials
  • Scientists
  • Unmanned Aerial Vehicles

Fields of Study

  • Engineering

Readers

  • Operations Research
  • Phased Array Antenna Design.
  • Robotics and Automation.