Spurious symptom reduction in fault monitoring
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Spurious symptom reduction in fault monitoring

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Published by National Aeronautics and Space Administration, Langley Research Center, National Technical Information Service, distributor in Hampton, Va, [Springfield, Va .
Written in English

Subjects:

  • Airplanes -- Turbojet engines -- In-flight monitoring.

Book details:

Edition Notes

StatementW.D. Shontz, R.M. Records, J.J. Chol.
SeriesNASA contractor report -- 101453., NASA contractor report -- NASA CR-101453.
ContributionsRecords, R. M., Chol, J. J., Langley Research Center.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15386660M

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CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): An approach to reduce number of spurious symp-toms in aircraft engine fault monitoring is investi-gated. Two strategies were utilized. A set of rules de-signed to filter spurious symptoms was created. Then a neural network was designed to generate expecta-tion value for each of the sensors monitored. Spurious Symptom Reduction in Fault Monitoring Using a Neural Network and Knowledge as Hybrid System. By Roger M. Records and Jai J. Choi T. Abstract. An approach to reduce number of spurious symp-toms in aircraft engine fault monitoring is investi-gated. Two strategies were utilized. A set of rules de-signed to filter spurious symptoms was Author: Roger M. Records and Jai J. Choi T. An incremental event-driven fault reasoning technique is presented in [27] and [28] to improve the robustness of fault localization system by analyzing lost, positive and spurious symptoms. Fault Monitoring. Fault Monitoring creates an actionable alert from a storage array or UNIX box. Fault Monitoring alerts when: The part needs replacing; There are issues with the software; When to use Fault Monitoring: During a hardware break/fix. This ensures your hardware is .

Fault monitoring is the process used to monitor all hardware, software, and network configurations for any deviations from normal operating conditions. This monitoring process typically includes major and minor changes to the expected bandwidth, performance, and utilization of . The FCC and ARRL have self-help information packages or books. If the problem involves an electrical-power, telephone or cable-television system, contact the appropriate utility company. They usually have trained personnel who can help you and your neighbor pinpoint the cause of the problem. On Page of the same book he states that the CLR uses a common (alertable) waiting routine any time you block, including blocking calls to Monitor. Would this imply that in addition to the 'apparent' spurious wakeups you mention, your Wait could also be subject to a 'genuine' supirous wakeup caused by an Asynchronous Procedure Call? Spurious operation of an IPF causes an unnecessary process disruption by taking action on a process that is operating normally. The costs of the process disruption should be considered, so an appropriate target spurious trip rate can be established for each IPF. The design basis should achieve the target risk reduction and spurious trip rate.

  Fault evidence may also be inaccurate because of spurious alarms, which are generated by transient problems or as a result of overly sensitive fault detection mechanisms. When spurious symptoms may occur, the management system may not be sure which observed alarms should be taken into account in the fault localization process. A false alarm, also called a nuisance alarm, is the deceptive or erroneous report of an emergency, causing unnecessary panic and/or bringing resources (such as emergency services) to a place where they are not alarms may occur with residential burglary alarms, smoke detectors, industrial alarms, and in signal detection alarms have the potential to divert emergency. AFCI Circuit Breaker Troubleshooting. An arc-fault circuit interrupter (AFCI) is a circuit breaker* located in your electrical panel that serves the functions of a normal breaker but also senses hazardous arcing on its circuit and will trip off for this. 2. Review and use all relevant information on the symptoms and problems associated with the products or assets 3. Investigate and establish the most likely causes of the faults 4. Select, use and apply diagnostic techniques, tools and aids to locate faults 5. Complete the fault diagnosis within the agreed time and inform the appropriate people.