Methods for Preliminary Data Processing in a System for Measuring of Radial Clearances with Self-Compensation of Temperature Effects on the Sensor in Flow Section of Gas-Turbine Engine

Belopukhov, Valentin N.; Borovik, S. Yu.; Podlypnov, Petr; Sekisov, Yuriy; Skobelev, O. P.

doi:10.1109/cscmp45713.2019.8976605

Cited by 3 publications

(15 citation statements)

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“…The principles of SCECS functioning are reflected with different degrees of detail in publications [ 18 , 30 , 32 , 33 , 34 , 35 ]. However, an understanding of the proposed solutions in the article is difficult without a brief explanation of the sensor’s operation.…”

Section: Scecs: Typical Design and Principle Of Operationmentioning

confidence: 99%

“…Measuring the displacements of the monitored object along all coordinates that affect the SCECS’s output signal is possible by using so-called “cluster measurement methods” [ 32 , 33 ] realized by means of groups of identical sensors (clusters) whose SE are oriented in a certain way toward the object and the number of sensors in the cluster corresponds to the number of monitored coordinates. Such methods are discussed below in Section 6 of the article.…”

Section: Factors Affecting Scecs: Types and Features Of The Influencementioning

confidence: 99%

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Reducing the Impact of Influence Factors on the Measurement Results from Single-Coil Eddy Current Sensors

Borovik

Kuteynikova

Sekisov

2022

Sensors

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Single-coil eddy current sensors (SCECS) form a separate and independent branch among the existing eddy current probes. Such sensors are often used for aviation and aerospace applications where the conditions accompanying the measuring process are harsh and even extreme. High temperatures (up to +600 °C in the compressor and over +1000 °C in the turbine of gas turbine engines), the complex shape surfaces of the monitored parts, the multidimensional movement of the power plants’ structural elements, restrictions on the probes number and their placement in the measuring zone are the main factors affecting the reliability and accuracy of the measurement results obtained by the sensors. The article provides an overview of the relevant approaches and methods for reducing the impact of influence factors on the measurement results from SCECS based on the extensive experience of more than 30 years of research and development being carried out in the Institute for the Control of Complex Systems of Russian Academy of Sciences. The scope of the solutions discussed in the article is not limited to SCECS measurement systems only but can also be extended to the systems with primary transducers of other designs or other physical principles.

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Section: Scecs: Typical Design and Principle Of Operationmentioning

confidence: 99%

Section: Factors Affecting Scecs: Types and Features Of The Influencementioning

confidence: 99%

Reducing the Impact of Influence Factors on the Measurement Results from Single-Coil Eddy Current Sensors

Borovik

Kuteynikova

Sekisov

2022

Sensors

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“…This means that the desired axial displacement of the shaft in CJTB cannot be determined by a single sensor. In this case the methods based on the clusters (groups of the identical sensors) of SCECS can be used to measure the multi-dimensional displacements of power plants’ structural elements [ 23 , 26 ]. The number of sensors in the cluster is determined by the number of measured coordinates of displacement.…”

Section: Single-coil Eddy Current Sensors With Sensitive Element In the Form Of A Segment Of A Linear Conductor And Their Location On Tpumentioning

confidence: 99%

“…Traditionally, such MC are built on the basis of the Blumlein Bridge [ 16 ] or nonequilibrium bridge with operational amplifier in differentiation mode [ 23 , 26 ]. Furthermore, one leg of the bridge includes the working SCECS, and the second one—either a similar SCECS performing the compensatory functions or its simulator in the form of an inductance coil, the value of which is equal to its own inductance of the working SCECS L 0 [ 27 ].…”

Section: Measuring Circuit and Conversion Of Scecs’s Information Signalsmentioning

confidence: 99%

“…In the case when the calibration characteristics and their approximating functions become nonmonotonic, the system of equations (6) cannot be solved by these algorithms. An algorithm that can be used for solving the system (6), in which there is no requirement of monotonicity of the functions f 1 ( x , y ) and f 2 ( x , y ) was described in [ 26 ].…”

Section: Measuring Circuit and Conversion Of Scecs’s Information Signalsmentioning

confidence: 99%

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Wear Diagnostics of the Thrust Bearing of NK-33 Turbo-Pump Unit on the Basis of Single-Coil Eddy Current Sensors

Belosludtsev

Borovik

Danilchenko

et al. 2021

Sensors

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The problem of early wear diagnostics of the combined journal-and-thrust bearing of the turbo-pump unit (TPU) of the liquid-propellant rocket engine NK-33 is considered. A feature of the problem is the significant restriction on modifications of the power plant’s design. The original solution based on replacing the standard induction sensors of the turbo-pump rotational speed currently used in TPU by single-coil eddy current sensors (SCECS) with sensitive elements in the form of a segment of a linear conductor is proposed. The SCECS provide the monitoring of the axial displacement of the shaft in the thrust bearing, which characterizes the state of the unit and increases with the bearing wear. The function of the TPU shaft’s rotational speed measuring also remains. The article describes the proposed approach as well as a laboratory prototype of the system for early detection of the TPU thrust bearing’s wear. The results of the prototype research that confirm the feasibility of the proposed approach are analyzed.

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System for Measuring of Radial Clearances in Gas-Turbine Engine with Self-Compensation of Temperature Effects on the Sensor

Belopukhov

Боровик

Podlipnov

et al. 2020

Mehatronika, avtomatizaciâ, upravlenie

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Methods for Preliminary Data Processing in a System for Measuring of Radial Clearances with Self-Compensation of Temperature Effects on the Sensor in Flow Section of Gas-Turbine Engine

Cited by 3 publications

References 0 publications

Reducing the Impact of Influence Factors on the Measurement Results from Single-Coil Eddy Current Sensors

Reducing the Impact of Influence Factors on the Measurement Results from Single-Coil Eddy Current Sensors

Wear Diagnostics of the Thrust Bearing of NK-33 Turbo-Pump Unit on the Basis of Single-Coil Eddy Current Sensors

System for Measuring of Radial Clearances in Gas-Turbine Engine with Self-Compensation of Temperature Effects on the Sensor

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