Adaptive Control of Nonlinear Flexible Systems

Abstract

The objective is the development of adaptive control methods which can significantly improve closed-loop performance for a broad class of nonlinear flexible systems. Towards this end, a nonlinear controller, applicable to a broad class of nonlinear systems, was devised. The controller consists of a feedforward signal generator which incorporates a model estimate together with a global feedback linearizer. There is an inner feedback controller which modifies control action in accordance with output errors between the feedforward ideal output and the actual sensed output. The adaptive scheme studied uses measured data to update the model in the feedforward signal generator. It was discovered in many simulations that this two-level approach to adaptive feedback linearization can perform significantly better than feedback linearizers using an observer network.

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Document Details

Document Type
Technical Report
Publication Date
Jan 18, 1993
Accession Number
ADA261676

Entities

People

  • M. G. Kabuli
  • Robert L. Kosut

Tags

Communities of Interest

  • C4I
  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Adaptive Systems
  • Closed Loop Systems
  • Control Systems
  • Differential Equations
  • Dynamics
  • Equations
  • Estimators
  • Feedback
  • Generators
  • Integrated Systems
  • Linear Systems
  • Nonlinear Systems
  • Observers
  • Signal Generators
  • Simulations
  • Transfer Functions
  • Uncertainty

Readers

  • Control Systems Engineering.
  • Electrical Engineering
  • Neural Network Machine Learning.