Vibration‐Based Fault Diagnosis of Commutator Motor

Głowacz, Adam; Głowacz, W.

doi:10.1155/2018/7460419

Cited by 48 publications

(33 citation statements)

References 35 publications

(77 reference statements)

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“…The proposed topics are essential for industry. Signal processing and analysis of diagnostic signals are used for fault diagnosis and monitoring systems [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. Signal processing and image processing methods are used for many applications, for example medical applications [27][28][29][30][31][32][33][34][35][36].…”

Section: The Present Special Issuementioning

confidence: 99%

Signal Processing and Analysis of Electrical Circuit

Głowacz

Daviu

2019

Electronics

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Section: The Present Special Issuementioning

confidence: 99%

Signal Processing and Analysis of Electrical Circuit

Głowacz

Daviu

2019

Electronics

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“…Measurements play a very important role in scientific progress. That is why there are many types of sensors [1], [2]. New ideas in sensors and sensor technologies as well as in measuring methods and techniques appear at a fast rate [3]- [7].…”

Section: Introductionmentioning

confidence: 99%

Information-measuring System to Study the Thermocouple with Controlled Temperature Field

Wang

Кочан

Przystupa

et al. 2019

Measurement Science Review

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Error due to inhomogeneity is the main problem of thermocouples (TCs), e.g., during the operation of a type K TC, this error can reach 11-30 °C. Thus, metrological reliability of TCs is threatened by this error because there is a high risk of exceeding the permissible error when the temperature distribution along the TC legs changes. Such a large error, in turn, can threaten a proper operation or even safety of a measured object. A TC with controlled temperature field was proposed to cope with this error. An information-measuring system to perform proper measurements, measurement data acquisition and collection to construct mathematical models is proposed. Its property is high diurnal stability of ±(0.0025+0,002(X/XMAX–1) %. The requirements for the information-measuring system and its structure are considered in this paper. In particular, one of the key problems of such a sensor is how stable is its own temperature field under the influence of the temperature field of a measured object. The experimental studies were carried out using the developed system. They showed that the coefficient of penetration of the temperature field of the measured object is about 0.04. This allows decreasing error due to inhomogeneity by about 10-20 times.

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“…Acoustic and thermal signals can be measured without touching the motor. The method of selection of amplitudes of frequencies ratio 50 second frequency coefficient (MSAF-RATIO-50-SFC), MSAF-RATIO-50-SFC-EXPANDED, MSAF-RATIO-24-MULTIEXPANDED-FILTER-8, and shortened method of frequencies selection (SMoFS-15) are methods later used for diagnosis with the recent development of non-invasive sensor technology [14,15]. The disadvantage of the mentioned diagnostic signals is difficult processing.…”

Section: Introductionmentioning

confidence: 99%

Linear Method for Diagnosis of Inter-Turn Short Circuits in 3-Phase Induction Motors

Goh

Kim²

2019

Applied Sciences

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When a turn-to-turn short fault occurs in an induction motor, it will be accompanied by vibration and heating, which will have adverse effects on the entire power system. Thus, turn-to-turn short fault diagnosis of the stator is required, and major accidents can be prevented if an inter-turn short circuit (ITSC), which is the early stage of a turn-to-turn short, can be detected. This study reinterprets Park’s vector approach using Direct-Quadrature(D-Q) transformation for the linear separation of ITSCs and proposes an ITSC diagnosis method by defining the magnetic flux linkage pulsation and current change in the event of a turn-to-turn short. It is difficult to diagnose because the turn-to-turn short current change in an ITSC is considerably different from the induction motor loss. Hence, it was found through analysis that when the current change is considered through an analysis of the relationship between inductance and the winding number, the ITSC current becomes slightly smaller than the steady-state current. This was verified using the D-Q synchronous reference frame over time. We proposed a linear separation of the ITSC diagnosis from the steady state by considering the minimum values of the pulsating current as feature points.

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Vibration‐Based Fault Diagnosis of Commutator Motor

Cited by 48 publications

References 35 publications

Signal Processing and Analysis of Electrical Circuit

Signal Processing and Analysis of Electrical Circuit

Information-measuring System to Study the Thermocouple with Controlled Temperature Field

Linear Method for Diagnosis of Inter-Turn Short Circuits in 3-Phase Induction Motors

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