fault analysis

fault analysis

[′fȯlt ə‚nal·ə·səs]
(engineering)
The detection and diagnosis of malfunctions in technical systems, in particular, by means of a scheme in which one or more computers monitor the technical equipment to signal any malfunction and designate the components responsible for it.

Fault analysis

The detection and diagnosis of malfunctions in technical systems. Such systems include production equipment, transportation vehicles, and household appliances. While the need to detect and diagnose malfunctions is as old as the construction of such systems, advanced fault detection has been made possible only by the proliferation of the computer. Fault detection and diagnosis actually means a scheme in which a computer monitors the technical equipment to signal any malfunction and determine the components responsible for it. The detection and diagnosis of the fault may be followed by automatic actions enabling the fault to be corrected, such that the system may operate successfully even under the particular faulty condition.

Fault detection and diagnosis applies to both the basic technical equipment and the actuators and sensors attached to it. Actuator and sensor fault detection is very important because these devices are quite prone to faults.

The on‐line or real‐time detection and diagnosis of faults means that the equipment is constantly monitored during its regular operation by a permanently connected computer, and any discrepancy is signaled almost immediately. On-line monitoring is very important for early detection of any component malfunction, before it can lead to more substantial equipment failure. In contrast, off-line diagnosis involves the monitoring of the system by a special, temporarily attached device, under special conditions (for example, car diagnostics at a service station).

The diagnostic activity may be broken down into several logical stages. Fault detection is the indication of something going wrong in the system. Fault isolation is the determination of the fault location (the component which malfunctions), while fault identification is the estimation of its size.

Fault detection and isolation can never be performed with absolute certainty, because of circumstances such as noise, disturbances, and model errors. There is always a trade-off between false alarms and missed detections, the proper balance depending on the particular application.

References in periodicals archive ?
Fault analysis and location functionality in PQView is enabled via its FaultPoint[R] Add-In Module.
In a statement Saturday, the agency said that fault analysis is ongoing but it has yet to determine the cause of the incident.
Moreover, the power plant is now equipped with a remote control system ensuring safe and efficient unmanned operation that also allows fast fault analysis where necessary.
The course syllabus for ISO 18436-2:2014 Vibration Analyst training involves the study of the principles of vibration, data acquisition, signal processing, condition monitoring, fault analysis, corrective action, equipment knowledge, acceptance testing, equipment testing & diagnostics, reference standards, reporting & documentation, fault severity determination, rotor/bearing dynamics, and a training examination.
In this paper, we propose an effective differential fault analysis on Whirlpool in the byte-oriented random fault model.
In order to further the cause of the fault analysis and system fault monitoring can determine the required acquisition parameters.
The authors cover block ciphers in general, digital circuits, hardware implementations for block ciphers, side-channel analysis and fault analysis on block ciphers, cryptoanalysis on block ciphers, and many other related topics over the bookAEs seven chapters.
In this way, it becomes a simple matter to develop tools for remote monitoring and fault analysis in IoT devices and networks, while enhancing both freedom in device selection and flexibility when systems are scaled up, greatly contributing to stable operations.
These transmission lines are hundreds of KM in length and the whole network is interconnected so the fault analysis on these transmission lines is essential.
The JRC-ITU (EU) and NucleoCon (Slovakia) are experts on the development and adaption of the TRANS-URANUS code which is widely used and commonly available for fault analysis during the licensing process of pressurized water reactors.
A display with a simple CANbus connection is integrated into the driver's platform for rapid fault analysis, transmitting key vehicle data and fault codes to the driver or service personnel.
The measurements obtained from synchrophasor are used to improve grid visualization, operational monitoring, power system control, stability monitoring, state estimation, and fault analysis.