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fault diagnosis

Online fault diagnosis for nonlinear power systems

Online fault diagnosis for nonlinear power systems

... Contributions. The power networks considered in this paper are described by the nonlinear swing equations with additive process noise. The faults are assumed to occur on the transmission lines of the power network. The ...

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Application of Three Order Cumulants in Fault Diagnosis

Application of Three Order Cumulants in Fault Diagnosis

... DOI: 10.4236/ijmnta.2018.74008 98 Int. J. Modern Nonlinear Theory and Application lants [7] [8] [9]. The author of this paper has studied high-order cumulants for many years, and has published many theses on this topic. ...

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Fault Diagnosis in Distribution Networks with Distributed Generation

Fault Diagnosis in Distribution Networks with Distributed Generation

... traditional fault current level and ...for fault diagnosis in power distribution networks with distributed ...the fault, and determine the fault ...

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Argumentation-based fault diagnosis for home networks

Argumentation-based fault diagnosis for home networks

... The information plane architecture can potentially pro- vide a huge amount of information which is helpful in net- work fault diagnosis. For example, a common issue in home networks which can cause ...

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A Fault Diagnosis Monitoring System of Reciprocating Pump

A Fault Diagnosis Monitoring System of Reciprocating Pump

... the fault of reciprocating pump valve components is judged by the pressure gauge and flow meter installed on the outlet ...the fault diagnosis of valve, the vibration signal collected at valve is ...

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A Wavelet Spectrum Technique for Machinery Fault Diagnosis

A Wavelet Spectrum Technique for Machinery Fault Diagnosis

... bearing fault diagnostic technique is critically needed in a wide array of industries to prevent machinery performance degradation, malfunction, or ev- en catastrophic failures ...and fault diagnosis ...

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A REVIEW OF CONDITION MONITORING AND FAULT DIAGNOSIS OF GEARS

A REVIEW OF CONDITION MONITORING AND FAULT DIAGNOSIS OF GEARS

... M. Elforjani, D.Mba, A. Muhamaad [8] monitored the seeded effects of worm gears with acoustic emission and comparison are made with vibration analysis. They developed an inte- grated approach to fault ...

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Research on fault diagnosis for MMC-HVDC Systems

Research on fault diagnosis for MMC-HVDC Systems

... a fault diagnosis method based on full dimension state observer for flexible HVDC sys- ...in fault observer, the robustness of the fault detection ...

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Navigation System Fault Diagnosis for Underwater Vehicle

Navigation System Fault Diagnosis for Underwater Vehicle

... a fault diagnosis scheme for the entire sensor and actuator package of the underwater Remotely Operated Vehicle (ROV) Minerva, depicted in ...1. Fault isolation prop- erties are investigated using ...

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Fault diagnosis of gearboxes using LSSVM and WPT

Fault diagnosis of gearboxes using LSSVM and WPT

... rotating parts of machineries carries lot many information within them about the condition of the operating machine. Further processing of these raw vibration signatures measured at a convenient location of the machine ...

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Fault Diagnosis of Electronic Circuits Based on Matlab

Fault Diagnosis of Electronic Circuits Based on Matlab

... that the actual value is almost identical with the expected value, and the accuracy of fault diagnosis using BP neural network trained by us is quite high. Figure 4-3 shows the BP neural network to predict ...

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An Intelligent Monitor for Electric Motor Fault Diagnosis

An Intelligent Monitor for Electric Motor Fault Diagnosis

... Many fault detection techniques have been proposed in literature to extract representative features from measurements for motor fault detection, however each has its own merits and ...several fault ...

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Ontology-based fault diagnosis for power transformers

Ontology-based fault diagnosis for power transformers

... Modelling transformer thermal dynamics is regarded as one of the most essential issues and the construction of an accurate thermal model is an im- portant aspect of transformer condition monitoring. The generally ...

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Fault Diagnosis Technology Based on Model Driven

Fault Diagnosis Technology Based on Model Driven

... The fault reasoning machine is the key part of fault ...the fault model. When all the fault characteristics and the constraint conditions are satisfied, the corresponding result will be ...

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Machine Fault Diagnosis and Prognosis: The State of The Art

Machine Fault Diagnosis and Prognosis: The State of The Art

... monitoring, fault diagnosis and prognosis could be found in [125], which one of the maintenance research center with the goals that is to enable products and systems to achieve and sustain near-zero ...

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The use of passive telemetry in rotor fault diagnosis

The use of passive telemetry in rotor fault diagnosis

... Vibration in rotating machinery usually is due to some externally applied load, such as misalignment, cracked or bent shafts, or mass unbalance. Vibration condition monitoring as a method of fault diagnosis ...

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Application of Genetic Neural Network in Fault Diagnosis

Application of Genetic Neural Network in Fault Diagnosis

... Abstract. There are many kinds of fault diagnosis methods for analog circuit. Aiming at some shortcomings of BP neural network, optimizing BP neural network with genetic algorithm is studied in this paper. ...

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Research on Key Technologies of Fault Diagnosis of an INS

Research on Key Technologies of Fault Diagnosis of an INS

... In this paper we utilize the BIT mechanism based on the integration of passive/active tests. First, a passive test is performed on the tested object, and after it passes, an active test is conducted and the key signals ...

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Review of Fault Diagnosis for Gyroscope

Review of Fault Diagnosis for Gyroscope

... gyroscope fault diagnosis method based on vibration statistical parameter analysis and neural network is proposed, by extracting the feature information, the RBF neural network is used to learn and identify ...

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Fault diagnosis and fault-tolerant control for nonlinear systems with linear output structure

Fault diagnosis and fault-tolerant control for nonlinear systems with linear output structure

... of fault diagnosis and faul-t tolerant control algorithm is presented for a class of nonlinear dynamic systems with a linear output ...The fault estimat e guarantees negativity of the first order ...

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