Title :
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
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;
Conference_Titel :
Control Applications, 1994., Proceedings of the Third IEEE Conference on
Conference_Location :
Glasgow
Print_ISBN :
0-7803-1872-2
DOI :
10.1109/CCA.1994.381443
