PBIT mode operation process method of distributed flight control system

Abstract

The invention belongs to a flight control system built-in self-detection technology, and provides a PBIT mode operation process method of a distributed flight control system, which is used for detecting the state of the flight control system and feeding back the state of the flight control system on the premise of ensuring safety. According to the technical scheme, the method comprises the steps that a PBIT task of the whole flight control system is started by a flight control computer (FCC), when the FCC meets own PBIT interlocking conditions, the FCC enters a PBIT mode, an FCC starting mode word is sent to an actuator remote control terminal (ART) according to a special state, the ART enters the PBIT mode by judging the own interlocking conditions and when a PBITSTART signal in the received FCC starting mode word is effective, an own working mode is sent to the FCC, a fault synthesis mode is entered when the FCC completes the PBIT test, the PBIT mode is quitted after waiting for the ART to complete the PBIT test, test information sent by the ART is received, a PBIT waiting mode is entered after the FCC synthesizes faults of the FCC and the ART, and the PBIT mode is quitted to a periodic real-time task mode after waiting for the avionics to call the PBIT fault.

Description

technical field [0001] The invention belongs to the self-inspection technology in a flight control system, and designs a PBIT mode operation method based on a distributed flight control system. Background technique [0002] PBIT is a self-test function that provides fault detection, location and isolation for the flight control system before flight. It is an important system fault self-test method and an important way to improve the system's test performance and diagnostic capabilities. It uses the hardware and software with self-test function inside the flight control system to complete the system test. For the distributed flight control system based on the 1394b bus and the aircraft with special status functions, in order to ensure the safety of the aircraft and ground maintenance personnel and the safe operation of the flight control system during the PBIT test of the system, it is necessary to design a set of distributed The operation process of the start-up, exit and f...

AI Technical Summary

Problems solved by technology

For the distributed flight control system based on the 1394b bus and the aircraft with special status functions, in order to ensure the safety of the aircraft and ground maintenance personnel and the safe operation of the flight control system during the PBIT test of the system, it is necessary to design a set of distributed The operation process of the start-up, exit and fault comprehensive declaration of the PBIT mode of the distributed flight control system. At present, the PBIT mode operation method of the distributed flight control system has not been retrieved from the public information at home and abroad.

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