A study about failures in the feedback paths of a flight control law

Author

Oliva, Alvaro P.

Author_Institution

Dept. Ciencias Aerospaciais, Univ. da Beira Interior, Covilha, Portugal

fYear

1994

fDate

24-26 Aug 1994

Firstpage

347

Abstract

A study about the effects of a sensor failure on a feedback path of a flight control system was performed and it is concluded what is the best implementation. In the study a longitudinal flight control law has been considered. Such control law was designed in order that the augmented aircraft satisfy the MIL-F-8785C and the Gibson attitude dropback criterion. The structure of the control law is a PI controller with a feedforward path. The aircraft example used was the Boeing-747 and the study has been performed for several flight cases from Mach 0.30 to Mach 0.80 and from sea level altitude to 40000 ft altitude. However in this work only flight case Mach 0.70 at 20000 ft is reported

Keywords

aircraft control; attitude control; feedback; feedforward; two-term control; 20000 feet; Boeing-747; Gibson attitude dropback criterion; MIL-F-8785C; PI controller; augmented aircraft; feedback path failures; feedforward path; longitudinal flight control law; sensor failure; Aircraft control; Feedforward systems; Output feedback; Position control; Proportional control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1994., Proceedings of the Third IEEE Conference on

Conference_Location

Glasgow

Print_ISBN

0-7803-1872-2

Type

conf

DOI

10.1109/CCA.1994.381443

Filename

381443