Backup flight control system and backup flight control method

Abstract

The invention provides a backup flight control system and a backup flight control method. The backup flight control system includes the following devices of: a cockpit command device for providing a control instruction of a cockpit, a flight control center device which monitors whether a main flight control device fails or not, wherein the main flight control device generates and outputs a control instruction for controlling an aircraft control surface according to the control instruction under the condition of normal work; a backup flight control device which is started under the condition that the flight control center device monitors that the main flight control device fails, generates a control instruction for controlling the aircraft control surface according to the control instruction after being started, starts to monitor whether the main flight control device fails or not, and allows to output the control instruction for controlling the aircraft control surface when monitoring that the main flight control device fails; and a flight control actuating device which is used for receiving the control instruction from the main flight control device or the backup flight control device and controlling the movement of the corresponding aircraft control surface.

Description

technical field [0001] The invention relates to the field of aircraft flight control, in particular to a backup flight control system and a backup flight control method. Background technique [0002] Flight control systems are complex and critical systems on modern civil aircraft and are critical to aircraft safety. Nowadays, compared with the traditional cable transmission flight control system, the fly-by-wire flight control system is of great significance to the overall weight reduction of the aircraft, and at the same time enables the aircraft to adopt a more ergonomic and safer flight control law. Therefore, the fly-by-wire flight control system The system has become the main trend of current aircraft design. [0003] In the existing fly-by-wire flight control system architecture, in addition to the main flight control system, there is also a function that is independent of the main flight control system and used to control part of the rudder surface of the aircraft wh...

AI Technical Summary

Problems solved by technology

Therefore, in this kind of backup control system, there is a concern that the backup controller will be activated by mistake while the main controller is still valid, which will interfere with the normal control of the actuator by the main controller.

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