Intermittent wiring fault detection and diagnosis for SSPC based aircraft power distribution system

Yaramasu, Anil; Cao, Yi; Liu, G.; Wu, Bin

doi:10.1109/aim.2012.6266004

“…Aircraft wire can be modeled as a transmission line with the resistance, inductance, capacitance and conductance [30,31]. The ABCD method can be used to model a branched aircraft wiring network as in [28].…”

Section: Modeling Of Normal Load Circuitmentioning

confidence: 99%

Intermittent Arc Fault Detection And Location For Aircraft Power Distribution System

Yaramasu¹

2021

Preprint

0

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This thesis addresses a non-destructive diagnostic method for intermittent arc fault detection and location. Intermittent arc faults appear in aircraft power systems in unpredictable manners when the degraded wires are wet, vibrating against metal structures, or under mechanical stresses, etc. They could evolve into serious faults that may cause on-board fires, power interruptions, system damage and catastrophic incidents, and thus have raised much concern in recent years. Recent trends in solid state power controllers (SSPCs) motivated the development of non-destructive diagnostic methods for health monitoring of aircraft wiring. In this thesis, the ABCD matrix (or transmission matrix) modeling method is introduced to derive normal and faulty load circuit models with better accuracy and reduced complexity compared to the conventional differential equation approach, and an intermittent arc fault detection method is proposed based on temporary deviations of load circuit model coefficients and wiring parameters. Furthermore, based on the faulty wiring model, a genetic algorithm (GA) is proposed to estimate the fault-related wiring parameters, such as intermittent arc location and average intermittent arc resistance. The proposed method can be applied to both the alternating current (AC) power distribution system (PDS) and direct current (DC) PDS. Simulations and experiments using a DC power source have been conducted, and the results have demonstrated effectiveness of the proposed method by estimating the fault location with an accuracy of +/- 0.5 meters on 24.6 meters wire. Unlike the existing techniques which generally requires special devices, the proposed method only needs circuit voltage and current measurement at the source end as inputs, and is thus suitable for SSPC-based aircraft PDS.

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“…Aircraft wire can be modeled as a transmission line with the resistance, inductance, capacitance and conductance [30,31]. The ABCD method can be used to model a branched aircraft wiring network as in [28].…”

Section: Modeling Of Normal Load Circuitmentioning

confidence: 99%

Intermittent Arc Fault Detection And Location For Aircraft Power Distribution System

Yaramasu¹

2021

Preprint

0

View full text Add to dashboard Cite

This thesis addresses a non-destructive diagnostic method for intermittent arc fault detection and location. Intermittent arc faults appear in aircraft power systems in unpredictable manners when the degraded wires are wet, vibrating against metal structures, or under mechanical stresses, etc. They could evolve into serious faults that may cause on-board fires, power interruptions, system damage and catastrophic incidents, and thus have raised much concern in recent years. Recent trends in solid state power controllers (SSPCs) motivated the development of non-destructive diagnostic methods for health monitoring of aircraft wiring. In this thesis, the ABCD matrix (or transmission matrix) modeling method is introduced to derive normal and faulty load circuit models with better accuracy and reduced complexity compared to the conventional differential equation approach, and an intermittent arc fault detection method is proposed based on temporary deviations of load circuit model coefficients and wiring parameters. Furthermore, based on the faulty wiring model, a genetic algorithm (GA) is proposed to estimate the fault-related wiring parameters, such as intermittent arc location and average intermittent arc resistance. The proposed method can be applied to both the alternating current (AC) power distribution system (PDS) and direct current (DC) PDS. Simulations and experiments using a DC power source have been conducted, and the results have demonstrated effectiveness of the proposed method by estimating the fault location with an accuracy of +/- 0.5 meters on 24.6 meters wire. Unlike the existing techniques which generally requires special devices, the proposed method only needs circuit voltage and current measurement at the source end as inputs, and is thus suitable for SSPC-based aircraft PDS.

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“…Yaramasu et al [6] have used the same AWM wiring model of an aging airplane in their research by adding load resistance to it for TDR.…”

Section: Nff Modelsmentioning

confidence: 99%

A Novel Intermittent Fault Detection Algorithm and Health Monitoring for Electronic Interconnections

Syed

¹

,

Perinpanayagam

²

,

Samie

³

et al. 2016

IEEE Trans. Compon., Packag. Manufact. Technol.

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There are various occurrences and root causes that result in no-fault-found (NFF) events but an intermittent fault (IF) is the most frustrating. This paper describes the challenging and most important area of an IF detection and health monitoring that focuses toward NFF situation in electronics interconnections. The experimental work focuses on mechanically-induced intermittent conditions in connectors. This paper illustrates a test regime, which can be used to repeatedly reproduce intermittence in electronic connectors, while subjected to vibration. A novel algorithm is used to detect an IF in interconnection. It sends a sine wave and decodes the received signal for intermittent information from the channel. This algorithm has been simulated to capture an IF signature using PSpice (electronic circuit simulation software). A simulated circuit is implemented for practical verification. However, measurements are presented using an oscilloscope. The results of this experiment provide an insight into the limitations of existing test equipment and requirements for future IF detection techniques. Aside from scheduled maintenance, this paper considers the possibility for in-service intermittent detection to be built into future systems, i.e., can IFs be captured without external test gear? Index Terms-Fault diagnosis, fault detection, NFF, and intermittent fault detection. I. INTRODUCTION M OST DEVICES and systems contain embedded electronics modules for monitoring, control, and to enhance the functionality of cars, trains, ships, and aeroplanes. The shrinking size and complexity of electronic circuits, with added redundancies, have led to difficulties in the maintenance of these systems. This becomes a challenge when faults are intermittent in nature. Intermittent faults (IFs) are a growing problem in electronics interconnection systems, especially for aircraft, satellites, and other vehicle industries and are safety critical to unmanned/autonomous connected vehicles. Interconnections have significantly increased in modern systems and these are prone to high stress of temperature, humidity, power fluctuation, electromagnetic interference, critical timing, aging, and vibration.

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Intermittent wiring fault detection and diagnosis for SSPC based aircraft power distribution system

Cited by 19 publications

References 10 publications

Intermittent Arc Fault Detection And Location For Aircraft Power Distribution System

Intermittent Arc Fault Detection And Location For Aircraft Power Distribution System

Intermittent Arc Fault Detection And Location For Aircraft Power Distribution System

A Novel Intermittent Fault Detection Algorithm and Health Monitoring for Electronic Interconnections

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