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phm system architecture of aircraft secondary power distribution system

A technology for secondary power distribution and system architecture, applied in geometric CAD, design optimization/simulation, special data processing applications, etc., to improve system fault coverage, improve safety, and reduce false alarms and misjudgments.

Active Publication Date: 2022-05-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Therefore, although the PHM concept of the secondary power distribution system has not yet been formed, let alone the corresponding system standards, the existing aircraft-level or power system-level PHM technology and the current diagnosis and prediction research of the secondary power distribution system make The development of the PHM system of the secondary power distribution system has become an inevitable trend

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Embodiment Construction

[0022] Some key technologies involved in the present invention will be described in detail below in conjunction with the accompanying drawings to support the claims.

[0023] figure 1 It is a block diagram of a comprehensive SSPC software and hardware architecture that integrates system arc fault detection and cable fault detection and location functions, so as to realize the diagnosis and protection of common fault modes in secondary power distribution systems. The main power circuit is a simple secondary power distribution branch from the input line to the SiC power tube to the cable and then to the load. In order to realize the system-level fault diagnosis of the power distribution system, the designed integrated SSPC hardware includes 3 boards Cards: 1) power board; 2) cable fault location board; 3) FPGA digital board. Among them, the power board is integrated with a drive circuit, a short-circuit protection circuit with current limiting, a load voltage, a current conditi...

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Abstract

The invention discloses a PHM system architecture of an aircraft secondary power distribution system. The PHM architecture adopts a layered structure, from the bottom up to the physical layer, the perception layer, the analysis layer, to the local fault diagnosis layer, the system fault diagnosis layer, and the system fault diagnosis layer. The failure prediction layer, and finally the system health management layer describes the overall structure of the PHM system, so as to integrate the PHM technology on the basis of the original aircraft secondary power distribution system, realize the goal of the PHM system of the secondary power distribution system, and then promote domestic civil aircraft The development and application of PHM technology in the power supply and distribution system can improve the safety, reliability, maintainability, support and economy of the entire aircraft power supply system.

Description

technical field [0001] The invention relates to a PHM system framework and a method of an aircraft secondary power distribution system, belonging to the technical field of power electronics and electric engineering. Background technique [0002] In order to improve aircraft safety and reliability and promote the development of condition-based maintenance, aircraft PHM (failure prediction and health management) technology has been developed and applied. For example, the Boeing B777, B787 health management system (AHM) and the maintenance analysis system (AIRMAN) of all Airbus A3xx aircraft, which can monitor the key parameters of the aircraft in real time, record the operation data, diagnose and predict faults at the aircraft level, and generate and manage maintenance plans Wait. However, various types of aircraft-level PHM architecture systems that have gained more practical applications focus on engine, airframe and material structure performance, flight control and avioni...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15
CPCG06F30/15G06F30/20
Inventor 王莉陈庆雯杨善水
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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