Document Type : Original Article

Authors

• Reza Soltani Nezhad ¹
• Abolqasem Naghash ²

¹ Aerospace Engineering: Amirkkabir University of Technology

² Aerospace Engineering, Amirkabir University of Technology

Abstract

This article examines the fault tolerance control (FTC) system for the Boeing 747. to reach this goal, firstly 6 degrees of freedom equations are simulated and linearized by using dynamic inversion method. Then, the system is controlled by a linear proportional-integral-derivative controller. To control this system, the angular velocity loop (r, q, p) must be closed and use cascade control to achieve this goal. Faults such as actuator and sensor failure are injected into the system, and by adding an integrated gain to the controller, the system resists these faults.  Also, a redundancy system has been used in sensors to prevent sensor faults. Moreover, a linear Kalman filter has been used to eliminate noise in the system. If an actuator is locked in the Boeing 747, the faulty actuator is removed from the control system. Then, a healthy actuator or other remaining actuators will eliminate the effects of this fault.

Keywords

• Fault-Tolerant Control System
• Dynamic Inversion
• Redundancy System
• Linear Kalman Filter

Article Title [Persian]

Designing a Fault-Tolerant Control System for the Boeing 747

Authors [Persian]

• Reza Soltani Nezhad ¹
• Abolqasem Naghash ²

¹ Aerospace Engineering: Amirkkabir University of Technology

² Aerospace Engineering, Amirkabir University of Technology

Abstract [Persian]

This article examines the fault tolerance control (FTC) system for the Boeing 747. to reach this goal, firstly 6 degrees of freedom equations are simulated and linearized by using dynamic inversion method. Then, the system is controlled by a linear proportional-integral-derivative controller. To control this system, the angular velocity loop (r, q, p) must be closed and use cascade control to achieve this goal. Faults such as actuator and sensor failure are injected into the system, and by adding an integrated gain to the controller, the system resists these faults.  Also, a redundancy system has been used in sensors to prevent sensor faults. Moreover, a linear Kalman filter has been used to eliminate noise in the system. If an actuator is locked in the Boeing 747, the faulty actuator is removed from the control system. Then, a healthy actuator or other remaining actuators will eliminate the effects of this fault.

Keywords [Persian]

• Fault-Tolerant Control System
• Dynamic Inversion
• Redundancy System
• Linear Kalman Filter