An LQG Up-and Away Flight Control Design for the STOL F-15 Aircraft.

Abstract

A robust controller for the STOL F-15 aircraft is developed using the LQG/LTR (linear system model, quadratic cost, gaussian models of uncertainty used for controller synthesis, with loop transfer recovery techniques of tuning the filter in the loop for control robustness enhancement) methods. Full state feedback controllers are synthesized using CGT/PI (Command Generator Tracking feedforward compensator to provide direct incoporation of flying qualities into the design process, with proportional plus integral feedback control) synthesis, using implicit model following techniques to improve full state robustness characteristics. Finally, a Kalman filter is used to replace the unrealistic assumption of full state availability with estimated states, using a LTR scheme to recover as much full state robustness characteristics as possible. (Thesis) Keywords: Optimal Control, Model-Following Control, Robustness, Proportional-Integral Control, STOL Aircraft Control, Flight Control Systems.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1985
Accession Number
ADA164108

Entities

People

  • Robert A. Houston

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Airframes
  • Closed Loop Systems
  • Computational Science
  • Computer-Aided Design
  • Computers
  • Control Surfaces
  • Control Systems
  • Differential Equations
  • Electrical Engineering
  • Equations Of Motion
  • Fighter Aircraft
  • Linear Systems
  • Mainframe Computers
  • Multiple Input Multiple Output
  • Short Takeoff Aircraft

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Aerospace Engineering
  • Robotics and Automation.