Diagnostics for Intelligent Control of MPD Engines

Abstract

MPD thrusters are examples of distributed parameter systems that have temporal and spatial variations. In order to establish an intelligent diagnostic system for MPD thrusters fundamental theorems had to be derived for the general case of diagnostics of distributed systems. Advanced mathematical techniques of semigroups and groups, equivalent norms, invariant principle, Lyapunov functional, etc., have been integrated with control schemes in order to develop criterion for stability, controllability and observability of distributed parameter systems. A simple model of the MPD thruster was developed and used in evaluation of the resulted theorems. Instability conditions for MPD thrusters are derived and stabilizability inputs are presented. This research has led to new understanding for the general problem of distributed parameter systems. MD Modeling, Stability, Controllability, Observability distributed parameter systems, Lyapunov stability analysis.

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Document Details

Document Type
Technical Report
Publication Date
Nov 15, 1988
Accession Number
ADA203640

Entities

People

  • R. Shoureshi

Organizations

  • Purdue University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Banach Space
  • Calculus Of Variations
  • Closed Loop Systems
  • Computational Fluid Dynamics
  • Computational Science
  • Control Systems
  • Differential Equations
  • Electric Propulsion
  • Electromagnetic Fields
  • Engineering
  • Equations Of State
  • Formulas (Mathematics)
  • Magnetoplasmadynamic Thrusters
  • Mechanical Engineering
  • Partial Differential Equations
  • Propulsion Systems
  • Thrusters

Readers

  • Artificial Intelligence
  • Control Systems Engineering.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Spacecraft Maneuvers