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- W2912741401 abstract "Abstract Structural waves transmitted solely through the pipe wall influence the accuracy in a clamp-on ultrasonic flow measurement system because of the superposition with the signals of interest. To improve the measurement against temperature variations, an algorithmic compensation of the structural waves using a temperature model is required. This paper proposes a temperature model for structural waves, using the Matching Pursuit method. In the first section, a sparse signal representation is presented to approximate the structural wave signals. The resulting signal coefficients are used to describe the temperature dependency in a linear model. The method is validated using measurements of structural waves in a circular pipe over a temperature range between <m:math xmlns:m=http://www.w3.org/1998/Math/MathML> <m:mn>20</m:mn> <m:mspace /> <m:mi>°</m:mi> <m:mtext>C</m:mtext> </m:math> 20hspace{0.1667em}^circ text{C} and <m:math xmlns:m=http://www.w3.org/1998/Math/MathML> <m:mn>80</m:mn> <m:mspace /> <m:mi>°</m:mi> <m:mtext>C</m:mtext> </m:math> 80hspace{0.1667em}^circ text{C} . Based on these measurements, the accuracy of the approximated temperature model is evaluated and compared against the baseline signal-stretch method." @default.
- W2912741401 created "2019-02-21" @default.
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- W2912741401 date "2019-01-26" @default.
- W2912741401 modified "2023-10-18" @default.
- W2912741401 title "Modeling of temperature dependency of structural waves in an ultrasonic flow measurement system" @default.
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- W2912741401 doi "https://doi.org/10.1515/teme-2018-0067" @default.
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