A self-locking method for power supply of fly-by-wire flight control system

Abstract

The invention provides a fly-by-wire flight control system power supply self-locking method. Redundant input power supplies are arranged on the left generator, the right generator and the storage battery of an aircraft. The high ends of a first relay, a second relay and a third relay are respectively connected with the first redundant input power supply, the second redundant input power supply and the third redundant input power supply. The low ends of the first relay, the second relay and the third relay are connected with a flight control power switch. The other end of the flight control power switch is connected with the power ground. The normally-closed contacts of the first relay, the second relay and the third relay are respectively connected with a first redundant output power supply, a second redundant output power supply and a third redundant output power supply, and a self-locking relay is arranged on the first relay. The high end of the self-locking relay is connected with the first redundant input power supply. The low end of the self-locking relay is connected with the low end of the first relay. Meanwhile, an aircraft wheel bearing switch is arranged at the signal input end of the self-locking relay so as to meet the requirement of uninterruptible power supply of the fly-by-wire flight control system and reduce the existing fault hidden trouble.

Description

technical field [0001] The invention relates to the technical field of flight control power supply, in particular to a power supply self-locking method for a fly-by-wire flight control system. Background technique [0002] The power supply mode of the fly-by-wire flight control system is manually powered on, that is, the power switch of the fly-by-wire flight control system is manually toggled. During the flight training process, the power switch of the fly-by-wire flight control system has the following potential failures: [0003] 1) Since the power switch components, cables, cable connectors, etc. are physically a single structural part, there are hidden dangers of common mode / single point failure, which will easily lead to power failure of the fly-by-wire flight control system when a failure occurs; [0004] 2) Misoperation of the power switch by the pilot may easily cause the power supply failure of the fly-by-wire flight control system; [0005] During the flight trai...

AI Technical Summary

Problems solved by technology

[0003] 1) Since the power switch components, cables, cable connectors, etc. are physically a single structural part, there are hidden dangers of common mode / single point failure, which will easily lead to power failure of the fly-by-wire flight control system when a failure occurs;

[0004] 2) Misoperation of the power switch by the pilot may easily cause the power supply failure of the fly-by-wire flight control system;

[0005] During the flight training process, the power supply of the fly-by-wire flight control system fails, which will directly affect the flight safety, and in serious cases cause the aircraft to crash

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