DESIGN OF HIGHLY REDUNDANT FAULT TOLERANT CONTROL FOR AIRCRAFT ELEVATOR SYSTEM

Muhammad  Tayyeb; Umar Riaz; Arslan Ahmed Amin; Omer  Saleem; Muhammad  Arslan; Muhammad Hamza Shahbaz

doi:10.5937/jaes0-27611

Muhammad Tayyeb FAST National University of Computer and Emerging Sciences, Chiniot Faisalabad Campus, Department of Electrical Engineering, Punjab, Pakistan
Umar Riaz FAST National University of Computer and Emerging Sciences, Chiniot Faisalabad Campus, Department of Electrical Engineering, Punjab, Pakistan
Arslan Ahmed Amin FAST National University of Computer and Emerging Sciences, Chiniot Faisalabad Campus, Department of Electrical Engineering, Punjab, Pakistan
Omer Saleem FAST National University of Computer and Emerging Sciences, Lahore Campus, Department of Electrical Engineering, Punjab, Pakistan
Muhammad Arslan FAST National University of Computer and Emerging Sciences, Chiniot Faisalabad Campus, Department of Electrical Engineering, Punjab, Pakistan
Muhammad Hamza Shahbaz FAST National University of Computer and Emerging Sciences, Chiniot Faisalabad Campus, Department of Electrical Engineering, Punjab, Pakistan

DOI: https://doi.org/10.5937/jaes0-27611

Keywords: elevator control system, fault tolerant control, elevator fault detection, redundancy, modified triple modular redundancy, dual redundancy

Abstract

Elevators are surfaces of flight control, typically at the rear of an aircraft to control the pitch of the plane, the angle of attack and the wing lift. The most critical actuation device is longitudinal aircraft control, and its failures will result in a catastrophic aircraft crash. This paper proposes a Highly Redundant Fault Tolerant Control (HRFTC) policy for the aircraft to accommodate faults in the critical sensors and actuators. Modified Triple Modular Redundancy (MTMR) has been proposed for the sensors and Dual Redundancy (DR) has been proposed for the actuators. The working of control laws, pilot order, signal conditioning, and failure are elaborated. Furthermore, the PID controller is used for the adjustment of the position of the elevator by comparing it with a set point. The results show that when a fault occurs, the system detects it successfully and tolerates it quickly without disturbing the flight of aircraft. The study is significant for the avionics industry for manufacturing highly reliable machines for human and environmental safety.

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