Development and Investigation of the Method for Compensating Thermoelectric Inhomogeneity Error

Su, Jun; Кочан, Орест; Kochan, Volodymyr; Wang, Chunzhi

doi:10.1007/s10765-015-2025-x

Cited by 23 publications

(18 citation statements)

References 4 publications

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“…A new type of TCs, the thermocouple with controlled temperature field (TCTF) was proposed in [14] in order to radically reduce the effect of acquired inhomogeneity on measurement results. A schematic diagram of the temperature measurement system based on the TCTF is given in Fig.1.…”

Section: Methods Of Reducing Error Due To Acquired Inhomogeneitymentioning

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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Section: Methods Of Reducing Error Due To Acquired Inhomogeneitymentioning

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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“…To eliminate them, it is reasonable to split the TCPTF [55,56] into: (i) the MTC itself. As a MTC it is reasonable to use a usual TC.…”

Section: The Furnace With Controlled Profile Of Temperature Fieldmentioning

confidence: 99%

“…The main idea is to combine a heater and a TC that measures the temperature of a section by making a heater from one thermocouple material, and its lead-out from the complementary one. This allows reducing the number of lead-outs, A structure of the special furnace proposed in [55,56] is shown in Fig. 2.…”

Section: E3s Web Of Conferencesmentioning

confidence: 99%

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Designing an accurate system for temperature measurements

Кочан

2017

E3S Web Conf.

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Abstract. The method of compensation of changes in temperature field along the legs of inhomogeneous thermocouple, which measures a temperature of an object, is considered in this paper. This compensation is achieved by stabilization of the temperature field along the thermocouple. Such stabilization does not allow the error due to acquired thermoelectric inhomogeneity to manifest itself. There is also proposed the design of the furnace to stabilize temperature field along the legs of the thermocouple which measures the temperature of an object. This furnace is not integrated with the thermocouple mentioned above, therefore it is possible to replace this thermocouple with a new one when it get its legs considerably inhomogeneous.. There is designed the two loop measuring system with the ability of error correction which can use simultaneously a usual thermocouple as well as a thermocouple with controlled profile of temperature field. The latter can be used as a reference sensor for the former.

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“…The problem of classification was already discussed in literature [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. Neural networks were described in many scientific articles [37][38][39][40][41][42].…”

Section: Nearest Neighbour Classifiermentioning

confidence: 99%

Fault diagnostics of DC motor using acoustic signals and MSAF-RATIO30-EXPANDED

Głowacz

2016

Archives of Electrical Engineering

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An early fault diagnostic method of Direct Current motors was presented in this article. The proposed method used acoustic signals of a motor. A method of feature extraction called MSAF-RATIO30-EXPANDED (method of selection of amplitudes of frequencies -ratio 30% of maximum of amplitude -expanded) was presented and implemented. An analysis of proposed method was carried out for early fault states of a real DC motor. Four following states of the DC motor were measured and analyzed: the healthy DC motor, DC motor with 3 shorted rotor coils, DC motor with 6 shorted rotor coils, DC motor with a broken coil. Measured states were caused by natural degradation of the DC motor. The obtained results of analysis were good. The presented early fault diagnostic method can be used for protection of DC motors.

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Development and Investigation of the Method for Compensating Thermoelectric Inhomogeneity Error

Cited by 23 publications

References 4 publications

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

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

Designing an accurate system for temperature measurements

Fault diagnostics of DC motor using acoustic signals and MSAF-RATIO30-EXPANDED

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