Sub-Optimal Control of a Gas Turbine Engine.
Abstract
Gas turbine engine technology has been advanced to the point where it is increasingly difficult to apply conventional feedback control theory to the design of its necessary multiple-input and multiple-output control systems. Modern linear control theory was applied to the engine control problem in four stages. Stage 1 involved formulating a simple, reliable, and representative mathematical model of the engine and describing the model in state variable form. Stage 2 involved using a truncated Taylor series to linearize the engine state equations about a succession of engine equilibrium points and solving the linear optimal output regulator problem and the linear optimal tracking problem to minimize a quadratic Performance Index. In stage 3, the engine model was simulated on a digital computer via the MIMIC Simulation Language. The engine control laws were then realized in a FORTRAN function sub-program. Stage 4 consisted of testing the controlled engine for various throttle demands to verify the satisfactory operation of the controller. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1973
- Accession Number
- AD0777852
Entities
People
- Robert John Bowles
Organizations
- Air Force Institute of Technology