Nonlinear Feedback Control for Rapid, On-Line Trajectory Optimization of Reentry Vehicles (PREPRINT)

Abstract

A new, on-line sampled-data feedback control algorithm for fast and accurate nonlinear optimal closed-loop control of a generic reentry vehicle in the presence of disturbances is presented. A direct Legendre pseudospectral method is used for the rapid re-computation of the open-loop optimal controls such that a successive optimal solution is fed back to the system to help manage uncertainties and external disturbances. The method is based on a receding-horizon control approach, but does not require and advanced knowledge of the computation time. Successful performance of this approach, combined with a spectral algorithm, shows that rapid trajectory generation is not only achievable, but that it is fast enough to provide optimal closed-loop feedback with successive re-computations.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2005
Accession Number
ADA444873

Entities

People

  • David B. Doman
  • I. M. Ross
  • Kevin P. Bollino

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Aircrafts
  • Algorithms
  • Closed Loop Systems
  • Computations
  • Control Systems
  • Coordinate Systems
  • Demographic Cohorts
  • Equations Of Motion
  • Feedback
  • Governments
  • Military Research
  • Optimization
  • Reentry Vehicles
  • Trajectories
  • Vehicles

Readers

  • Control Systems Engineering.
  • Distributed Systems and Data Platform Development
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)