Application And Flight Test Of Linearizing Transformations Using Measurement Feedback To The Nonlinear Control Problem

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781729308806
Total Pages : 62 pages
Book Rating : 4.3/5 (88 download)

DOWNLOAD NOW!

Download or read book Application and Flight Test of Linearizing Transformations Using Measurement Feedback to the Nonlinear Control Problem written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-26 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of nonlinear controllers has relied on the use of detailed aerodynamic and engine models that must be associated with the control law in the flight system implementation. Many of these controllers were applied to vehicle flight path control problems and have attempted to combine both inner- and outer-loop control functions in a single controller. An approach to the nonlinear trajectory control problem is presented. This approach uses linearizing transformations with measurement feedback to eliminate the need for detailed aircraft models in outer-loop control applications. By applying this approach and separating the inner-loop and outer-loop functions two things were achieved: (1) the need for incorporating detailed aerodynamic models in the controller is obviated; and (2) the controller is more easily incorporated into existing aircraft flight control systems. An implementation of the controller is discussed, and this controller is tested on a six degree-of-freedom F-15 simulation and in flight on an F-15 aircraft. Simulation data are presented which validates this approach over a large portion of the F-15 flight envelope. Proof of this concept is provided by flight-test data that closely matches simulation results. Flight-test data are also presented. Antoniewicz, Robert F. and Duke, Eugene L. and Menon, P. K. A. Armstrong Flight Research Center...