scholarly journals Diagnosis of Intermittent Faults and its dynamics

10.5772/9507 ◽  
2010 ◽  
Author(s):  
A. Correcher ◽  
E. Garcia ◽  
F. Morant ◽  
E. Quiles ◽  
L. Rodriguez
Keyword(s):  
Intermittent Faults

Conditional time resolved photoemission for debugging ICs with intermittent faults

2008 ◽  
Vol 48 (8-9) ◽  
pp. 1289-1294
Author(s):  
Frank Zachariasse ◽  
Jan van Hassel
Keyword(s):  
Time Resolved ◽  
Intermittent Faults ◽  
Conditional Time

Data Acquisition from Light-Duty Vehicles Using OBD and CAN

10.4271/r-458 ◽  
2018 ◽  
Author(s):  
Eric Walter ◽  
◽  
Richard Walter ◽  
Keyword(s):  
Data Acquisition ◽  
Accident Reconstruction ◽  
Intermittent Faults ◽  
Light Duty ◽  
Control Units ◽  
Standard Family ◽  
Engineering Parameters ◽  
Light Duty Vehicles ◽  
Share Information ◽  
Vehicle Network

Modern vehicles have multiple electronic control units (ECU) to control various subsystems such as the engine, brakes, steering, air conditioning, and infotainment. These ECUs are networked together to share information directly with each other. This in-vehicle network provides a data opportunity for improved maintenance, fleet management, warranty and legal issues, reliability, and accident reconstruction. Data Acquisition from Light-Duty Vehicles Using OBD and CAN is a guide for the reader on how to acquire and correctly interpret data from the in-vehicle network of light-duty (LD) vehicles. The reader will learn how to determine what data is available on the vehicle's network, acquire messages and convert them to scaled engineering parameters, apply more than 25 applicable standards, and understand 15 important test modes. Topics featured in this book include: • Calculated fuel economy • Duty cycle analysis • Capturing intermittent faults Written by two specialists in this field, Richard P. Walter and Eric P. Walter of HEM Data, the book provides a unique roadmap for the data acquisition user. The authors give a clear and concise description of the CAN protocol plus a review of all 19 parts of the SAE International J1939 standard family. Data Acquisition from Light-Duty Vehicles Using OBD and CAN is a must-have reference for product engineers, service technicians fleet managers and all interested in acquiring data effectively from the light-duty vehicles.

scholarly journals Proposal of an Adaptive Fault Tolerance Mechanism to Tolerate Intermittent Faults in RAM

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2074
Author(s):  
J.-Carlos Baraza-Calvo ◽  
Joaquín Gracia-Morán ◽  
Luis-J. Saiz-Adalid ◽  
Daniel Gil-Tomás ◽  
Pedro-J. Gil-Vicente
Keyword(s):  
Fault Tolerance ◽  
Error Correction ◽  
Error Detection ◽  
Fault Injection ◽  
Error Correction Codes ◽  
Transient Faults ◽  
Tolerance Mechanism ◽  
Intermittent Faults ◽  
Risc Processor ◽  
Simulation Based

Due to transistor shrinking, intermittent faults are a major concern in current digital systems. This work presents an adaptive fault tolerance mechanism based on error correction codes (ECC), able to modify its behavior when the error conditions change without increasing the redundancy. As a case example, we have designed a mechanism that can detect intermittent faults and swap from an initial generic ECC to a specific ECC capable of tolerating one intermittent fault. We have inserted the mechanism in the memory system of a 32-bit RISC processor and validated it by using VHDL simulation-based fault injection. We have used two (39, 32) codes: a single error correction–double error detection (SEC–DED) and a code developed by our research group, called EPB3932, capable of correcting single errors and double and triple adjacent errors that include a bit previously tagged as error-prone. The results of injecting transient, intermittent, and combinations of intermittent and transient faults show that the proposed mechanism works properly. As an example, the percentage of failures and latent errors is 0% when injecting a triple adjacent fault after an intermittent stuck-at fault. We have synthesized the adaptive fault tolerance mechanism proposed in two types of FPGAs: non-reconfigurable and partially reconfigurable. In both cases, the overhead introduced is affordable in terms of hardware, time and power consumption.

scholarly journals Diagnosis of Intermittently Faulty Units at System Level

Data ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 44
Author(s):  
Viktor Mashkov ◽  
Jirí Fiser ◽  
Volodymyr Lytvynenko ◽  
Maria Voronenko
Keyword(s):  
System Identification ◽  
System Level ◽  
Intermittent Faults ◽  
Intermittent Fault ◽  
Different Types

Mostly, diagnosis at a system level intends to identify only permanently faulty units. In the paper, we consider the case when both permanently and intermittently faulty units can occur in the system. Identification of intermittently faulty units has some specifics which we have considered in this paper. We also suggest the method which allows for distinguishing among different types of intermittent faults. A diagnosis procedure was suggested for each type of intermittent fault.

Deep model integrated with data correlation analysis for multiple intermittent faults diagnosis

2019 ◽  
Vol 95 ◽  
pp. 306-319 ◽  
Author(s):  
Jing Yang ◽  
Guo Xie ◽  
Yanxi Yang ◽  
Youmin Zhang ◽  
Wei Liu
Keyword(s):  
Correlation Analysis ◽  
Data Correlation ◽  
Intermittent Faults ◽  
Deep Model ◽  
Faults Diagnosis

scholarly journals Modelling of false alarms and intermittent faults and their impact on the maintenance cost of digital avionics

2018 ◽  
Vol 16 ◽  
pp. 107-114
Author(s):  
Ahmed Raza ◽  
Vladimir Ulansky
Keyword(s):  
Maintenance Cost ◽  
False Alarms ◽  
Intermittent Faults

An Approach to the Diagnosis of Intermittent Faults

1975 ◽  
Vol C-24 (5) ◽  
pp. 461-467 ◽  
Author(s):  
S. Kamal
Keyword(s):  
Intermittent Faults

Research of Aircraft Cable Fault Detecting Method Based on Hilbert Huang Transformation

2011 ◽  
Vol 214 ◽  
pp. 138-143
Author(s):  
Tao Jing ◽  
Lu Zhang ◽  
Xu Dong Shi ◽  
Li Wen Wang
Keyword(s):  
Frequency Domain ◽  
Short Circuit ◽  
Reference Signal ◽  
Open Circuit ◽  
Time Domain Reflectometry ◽  
Transform Method ◽  
Hilbert Huang Transform ◽  
Intermittent Faults ◽  
Time Frequency ◽  
Frequency Domain Reflectometry

Aircraft cable fault diagnosing is considered to be most important for engineering maintenance. Several methods for cables testing have been developed, such as TDR, FDR and TFDR. Time Domain Reflectometry (TDR) relays much on impedance changes on the fault position, which is hard to using in detecting high resistance defects, intermittent defects; Time Frequency Domain Reflectometry (TFDR) method is used to locate intermittent faults, continuous faults and cross-connection faults aircraft wire, however, the algorithm of TFDR is complex. To the "Hard Fault"(short circuit and open circuit), the Hilbert-Huang Transform method is used in determining the optimal bandwidth of the incident reference signal and analyzing the phase and amplitude difference of superimposed signal which from the incident signal and the reflected signal on defects. To the "Fray Fault", Time and Frequency Domain Reflectometry method can be used with the signal processing method with Hilbert-Huang Transform. The experimental results indicate that this method effectively detect all types of aircraft cable fault, particularly for short lengths of cable.

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