Multivariable Methods for the Design, Identification, and Control of Large Space Structures. Volume 1. Estimator Eigenvalue Placement in Positive Real Design

Abstract

The objective of this contract was to develop mathematical algorithms for the integration of structural dynamics and controls with particular reference to the design of large space structures. A numerical technique is presented to place the eigenvalues of the estimator in a positive real control environment. The estimator is based on a reduced-order model of the full system. The technique involves posing the problem as a constrained optimization problem. Two formulations are presented for solving the optimization problem, which differ in their objective functions and in the way constraints are handled. Examples are given illustrating the pole placement for estimators based on arbitrary 2nd order model, and on 4th and 6th order models of the DRAPER I tetrahedral truss structure. Keywords: Nonlinear optimization method, Flexible spacecraft, Feedback controllers.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1989
Accession Number
ADA226525

Entities

People

  • G. L. Slater
  • M. D. Mclaren

Organizations

  • University of Cincinnati

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Classification
  • Closed Loop Systems
  • Contracts
  • Control Systems
  • Eigenvalues
  • Eigenvectors
  • Engineering
  • Estimators
  • Governments
  • Large Space Structures
  • Security
  • Spacecraft
  • Transfer Functions
  • Two Dimensional
  • United States

Readers

  • Control Systems Engineering.
  • Robotics and Automation.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers