The Experts below are selected from a list of 3198 Experts worldwide ranked by ideXlab platform
Zhiyao Huang - One of the best experts on this subject based on the ideXlab platform.
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a model based transit time ultrasonic Gas Flowrate measurement method
Instrumentation and Measurement Technology Conference, 2016Co-Authors: Yandan Jiang, Baoliang Wang, Zhiyao HuangAbstract:Based on the transit-time ultrasonic Gas Flowrate measurement principle, a new model-based time-of-flight (TOF) measurement method is proposed. The proposed TOF measurement method includes two parts, the signal preprocessing and the model-fitting. Zero-phase filtering and independent component analysis with reference (ICA-R) are used to realize the signal preprocessing. The least-squares algorithm is used to implement the model-fitting and hence to obtain the TOF. A new single-acoustic-path ultrasonic Gas flowmeter prototype with the inner diameter of 100 mm is developed and experiments are carried out to test the performance of the prototype. Experimental results show that the proposed signal preprocessing can effectively correct the distorted/noise-polluted measurement signal. In addition, the proposed model-based TOF measurement method is effective and can implement TOF measurement with higher repeatability and low standard deviation. For the Gas Flowrate ranges from 5 to 50 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 1.99% and the maximum relative error of Flowrate measurement is less than 3.27%. For the Gas Flowrate ranges from 50 to 500 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 0.51% and the maximum relative error of Flowrate measurement is less than 1.43%.
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I2MTC - A model-based transit-time ultrasonic Gas Flowrate measurement method
IEEE Transactions on Instrumentation and Measurement, 2016Co-Authors: Yandan Jiang, Baoliang Wang, Zhiyao HuangAbstract:Based on the transit-time ultrasonic Gas Flowrate measurement principle, a new model-based time-of-flight (TOF) measurement method is proposed. The proposed TOF measurement method includes two parts, the signal preprocessing and the model-fitting. Zero-phase filtering and independent component analysis with reference (ICA-R) are used to realize the signal preprocessing. The least-squares algorithm is used to implement the model-fitting and hence to obtain the TOF. A new single-acoustic-path ultrasonic Gas flowmeter prototype with the inner diameter of 100 mm is developed and experiments are carried out to test the performance of the prototype. Experimental results show that the proposed signal preprocessing can effectively correct the distorted/noise-polluted measurement signal. In addition, the proposed model-based TOF measurement method is effective and can implement TOF measurement with higher repeatability and low standard deviation. For the Gas Flowrate ranges from 5 to 50 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 1.99% and the maximum relative error of Flowrate measurement is less than 3.27%. For the Gas Flowrate ranges from 50 to 500 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 0.51% and the maximum relative error of Flowrate measurement is less than 1.43%.
Yandan Jiang - One of the best experts on this subject based on the ideXlab platform.
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a model based transit time ultrasonic Gas Flowrate measurement method
Instrumentation and Measurement Technology Conference, 2016Co-Authors: Yandan Jiang, Baoliang Wang, Zhiyao HuangAbstract:Based on the transit-time ultrasonic Gas Flowrate measurement principle, a new model-based time-of-flight (TOF) measurement method is proposed. The proposed TOF measurement method includes two parts, the signal preprocessing and the model-fitting. Zero-phase filtering and independent component analysis with reference (ICA-R) are used to realize the signal preprocessing. The least-squares algorithm is used to implement the model-fitting and hence to obtain the TOF. A new single-acoustic-path ultrasonic Gas flowmeter prototype with the inner diameter of 100 mm is developed and experiments are carried out to test the performance of the prototype. Experimental results show that the proposed signal preprocessing can effectively correct the distorted/noise-polluted measurement signal. In addition, the proposed model-based TOF measurement method is effective and can implement TOF measurement with higher repeatability and low standard deviation. For the Gas Flowrate ranges from 5 to 50 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 1.99% and the maximum relative error of Flowrate measurement is less than 3.27%. For the Gas Flowrate ranges from 50 to 500 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 0.51% and the maximum relative error of Flowrate measurement is less than 1.43%.
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I2MTC - A model-based transit-time ultrasonic Gas Flowrate measurement method
IEEE Transactions on Instrumentation and Measurement, 2016Co-Authors: Yandan Jiang, Baoliang Wang, Zhiyao HuangAbstract:Based on the transit-time ultrasonic Gas Flowrate measurement principle, a new model-based time-of-flight (TOF) measurement method is proposed. The proposed TOF measurement method includes two parts, the signal preprocessing and the model-fitting. Zero-phase filtering and independent component analysis with reference (ICA-R) are used to realize the signal preprocessing. The least-squares algorithm is used to implement the model-fitting and hence to obtain the TOF. A new single-acoustic-path ultrasonic Gas flowmeter prototype with the inner diameter of 100 mm is developed and experiments are carried out to test the performance of the prototype. Experimental results show that the proposed signal preprocessing can effectively correct the distorted/noise-polluted measurement signal. In addition, the proposed model-based TOF measurement method is effective and can implement TOF measurement with higher repeatability and low standard deviation. For the Gas Flowrate ranges from 5 to 50 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 1.99% and the maximum relative error of Flowrate measurement is less than 3.27%. For the Gas Flowrate ranges from 50 to 500 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 0.51% and the maximum relative error of Flowrate measurement is less than 1.43%.
B. C. Huamg - One of the best experts on this subject based on the ideXlab platform.
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Bath mixing behaviour in top-bottom-side blown converter
Ironmaking & Steelmaking, 2010Co-Authors: L. C. Zhong, X. Wang, Y. X. Zhu, B. Y. Chen, B. C. HuamgAbstract:Abstract The influence of blowing process parameters on bath stirring was investigated in a model of a top–bottom–side blown converter using physical modelling experiments. It was shown that the side blowing Gas Flowrate has an important influence on bath mixing time which decreases as side tuyere Gas Flowrate increases up to a critical Flowrate and then plateaus. Bottom Gas injection is favourable for bath mixing for top–bottom–side blown converters; however, top lance height, top Gas Flowrate and bath level have little influence.
Ea Krey - One of the best experts on this subject based on the ideXlab platform.
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three component laser doppler anemometer for Gas Flowrate measurements up to 5 500 m3 h
Metrologia, 1994Co-Authors: D Dopheide, V Strunck, Ea KreyAbstract:In the Physikalisch-Technische Bundesanstalt (PTB) the primary standard for on-line Flowrate measurements using the laser Doppler anemometer (LDA) technique has been extended to a three-component LDA to improve velocity profile measurements in the boundary layers of a nozzle flow. The LDA Flowrate measuring facility now consists of a two-colour argon ion LDA and a wavelength-stabilized GaAlAs diode laser LDA. The Gas Flowrate is obtained by numerical integration of the measured velocity profiles across the exit plane of the nozzle. High local resolution of the velocity profile measurements is achieved by perpendicular orientation of the measurement volumes of the two-component Gas laser LDA and the semiconductor diode laser LDA (LD-LDA). This allows the resolution in the boundary layer to be improved significantly to velocity gradients. The present work presents the LD-LDA system for precise velocity profile measurements at flow velocities of up to 120 m/s; selected profile measurements are described in detail to demonstrate the high resolution and the symmetry of the flow profile. For the first time a wavelength-stabilized miniaturized diode laser LDA has been successfully applied in precise velocity measurements, and comparisons with well-established Gas laser LDAs have been made. The uncertainty of the Flowrate measurement up to 5 500 m3/h is 0,1% for air at atmospheric pressure. A turbine Gas meter, type Elster G2500, was calibrated with the LDA and used as a transfer standard for an intercomparison with the Nederlands Meetinstituut (NMI) in the Flowrate range up to 5 500 m3/h with and without the installation of perforated plates to condition the flow in the inlet section of the Gas meter. The results of the comparison experiment clearly show the reliability and accuracy of the online Flowrate measurement of Gases and underline the necessity for a detailed research programme to investigate the relationship between installation effects, upstream flow conditions and the measurement uncertainty of Gas meters. The design of a test rig now under construction at the PTB is shown. This will allow the diode laser LDA technique to be applied to the measurement of installation effects according to OIML Recommendation R-32.
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Three-component Laser Doppler Anemometer for Gas Flowrate Measurements up to 5 500 m3/h
Metrologia, 1994Co-Authors: D Dopheide, V Strunck, Ea KreyAbstract:In the Physikalisch-Technische Bundesanstalt (PTB) the primary standard for on-line Flowrate measurements using the laser Doppler anemometer (LDA) technique has been extended to a three-component LDA to improve velocity profile measurements in the boundary layers of a nozzle flow. The LDA Flowrate measuring facility now consists of a two-colour argon ion LDA and a wavelength-stabilized GaAlAs diode laser LDA. The Gas Flowrate is obtained by numerical integration of the measured velocity profiles across the exit plane of the nozzle. High local resolution of the velocity profile measurements is achieved by perpendicular orientation of the measurement volumes of the two-component Gas laser LDA and the semiconductor diode laser LDA (LD-LDA). This allows the resolution in the boundary layer to be improved significantly to velocity gradients. The present work presents the LD-LDA system for precise velocity profile measurements at flow velocities of up to 120 m/s; selected profile measurements are described in detail to demonstrate the high resolution and the symmetry of the flow profile. For the first time a wavelength-stabilized miniaturized diode laser LDA has been successfully applied in precise velocity measurements, and comparisons with well-established Gas laser LDAs have been made. The uncertainty of the Flowrate measurement up to 5 500 m3/h is 0,1% for air at atmospheric pressure. A turbine Gas meter, type Elster G2500, was calibrated with the LDA and used as a transfer standard for an intercomparison with the Nederlands Meetinstituut (NMI) in the Flowrate range up to 5 500 m3/h with and without the installation of perforated plates to condition the flow in the inlet section of the Gas meter. The results of the comparison experiment clearly show the reliability and accuracy of the online Flowrate measurement of Gases and underline the necessity for a detailed research programme to investigate the relationship between installation effects, upstream flow conditions and the measurement uncertainty of Gas meters. The design of a test rig now under construction at the PTB is shown. This will allow the diode laser LDA technique to be applied to the measurement of installation effects according to OIML Recommendation R-32.
Baoliang Wang - One of the best experts on this subject based on the ideXlab platform.
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a model based transit time ultrasonic Gas Flowrate measurement method
Instrumentation and Measurement Technology Conference, 2016Co-Authors: Yandan Jiang, Baoliang Wang, Zhiyao HuangAbstract:Based on the transit-time ultrasonic Gas Flowrate measurement principle, a new model-based time-of-flight (TOF) measurement method is proposed. The proposed TOF measurement method includes two parts, the signal preprocessing and the model-fitting. Zero-phase filtering and independent component analysis with reference (ICA-R) are used to realize the signal preprocessing. The least-squares algorithm is used to implement the model-fitting and hence to obtain the TOF. A new single-acoustic-path ultrasonic Gas flowmeter prototype with the inner diameter of 100 mm is developed and experiments are carried out to test the performance of the prototype. Experimental results show that the proposed signal preprocessing can effectively correct the distorted/noise-polluted measurement signal. In addition, the proposed model-based TOF measurement method is effective and can implement TOF measurement with higher repeatability and low standard deviation. For the Gas Flowrate ranges from 5 to 50 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 1.99% and the maximum relative error of Flowrate measurement is less than 3.27%. For the Gas Flowrate ranges from 50 to 500 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 0.51% and the maximum relative error of Flowrate measurement is less than 1.43%.
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I2MTC - A model-based transit-time ultrasonic Gas Flowrate measurement method
IEEE Transactions on Instrumentation and Measurement, 2016Co-Authors: Yandan Jiang, Baoliang Wang, Zhiyao HuangAbstract:Based on the transit-time ultrasonic Gas Flowrate measurement principle, a new model-based time-of-flight (TOF) measurement method is proposed. The proposed TOF measurement method includes two parts, the signal preprocessing and the model-fitting. Zero-phase filtering and independent component analysis with reference (ICA-R) are used to realize the signal preprocessing. The least-squares algorithm is used to implement the model-fitting and hence to obtain the TOF. A new single-acoustic-path ultrasonic Gas flowmeter prototype with the inner diameter of 100 mm is developed and experiments are carried out to test the performance of the prototype. Experimental results show that the proposed signal preprocessing can effectively correct the distorted/noise-polluted measurement signal. In addition, the proposed model-based TOF measurement method is effective and can implement TOF measurement with higher repeatability and low standard deviation. For the Gas Flowrate ranges from 5 to 50 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 1.99% and the maximum relative error of Flowrate measurement is less than 3.27%. For the Gas Flowrate ranges from 50 to 500 $\text{m}^{3}$ /h, the repeatability error of Gas Flowrate measurement is less than 0.51% and the maximum relative error of Flowrate measurement is less than 1.43%.
