The electrostatic charging trends and signal frequency analysis of a particulate material during pneumatic conveying

Armour-Chelu, David; Woodhead, Steve; Barnes, RN

doi:10.1016/s0032-5910(97)03365-2

Cited by 17 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the electrostatic sensor, the input is the inducing charge located in the sensing zone that can be measured using suitable devices, while the corresponding output is the voltage signal that is acquired and processed by the electrostatic sensing system. According to Ohm's law, the actual output voltage signal and the induced charge are related according to the following equation [26][27][28][29] U ðtÞ ¼ R i dQ dt…”

Section: The Test Rigmentioning

confidence: 99%

Numerical analysis and experimental verification of the induced waveform characteristics for aeroengine gas path debris electrostatic sensor

Guo

Zuo

Jiang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

This article introduces the principle of aeroengine gas path electrostatic monitoring and establishes a mathematical model of aeroengine gas path debris electrostatic sensor. In this study, we simulate particle’s movement based on the established model and perform numerical analysis of the induced charge pulse waveform. The simulation results show the quantitative relationship among particle’s charge amount, velocity, and pulse waveform’s features, and obtain the qualitative relationship between particle’s spatial position and pulse waveform’s features. A test rig is designed to verify the correctness of the mathematical model. A measurement mode based on dual-channel sensors has been proposed, and corresponding signal processing methods are used to calculate the velocity of the particle and reconstruct the charge pulse waveform from the measured voltage signal. The conclusions of this study not only avoid the shortcomings of traditional signal processing methods that directly use the measured voltage signal but also have important significance for improving the electrostatic monitoring capability.

show abstract

Section: The Test Rigmentioning

confidence: 99%

Numerical analysis and experimental verification of the induced waveform characteristics for aeroengine gas path debris electrostatic sensor

Guo

Zuo

Jiang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

show abstract

“…(2) Charge Amplifier The charge amplifier is essentially a current integrator that produces a voltage signal proportional to the integrated value of the input current [7,8,12,17,30]. A charge amplifier working in AC mode has the same circuit configuration as that of a trans-resistance amplifier [23], as shown in Fig.…”

Section: B Preamplifiersmentioning

confidence: 99%

A Comparative Study of the Preamplifiers in Electrostatic Sensors Through Analytical Modeling and Experimental Evaluation

Yan

Yang

2022

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

show abstract

“…In contrast, electrostatic sensors have excellent potential for application in velocity parameter measurement due to their no radiation, fast response, non-invasive as well as safe and reliable characteristics. In recent years, a variety of electrostatic sensors have been developed for particle velocity measurement, including the correlation method and spatial filtering method [6,[9][10][11][12]. However, the correlation method usually requires the assumption that the measurement object is a 'frozen flow', which means that the flow pattern remains unchanged between the two sets of sensors, and it always suffer from the influence of the installation distance of the sensors and the sampling speed.…”

Section: Introductionmentioning

confidence: 99%

Research on multi-velocity measurement method of solid particles based on interdigital electrostatic sensor

Gao,

Liao,

Niu

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

In gas-solid two-phase flow, the velocities of solid particles will show different distributions as the flow pattern changes, and it is a challenging task to achieve the measurement of different velocity parameters in the flow field. To obtain the velocity information of solid particles in the flow field, a novel method to achieve multi-velocity measurement of solid particles is proposed by using the spatial filtering characteristics of interdigital electrostatic sensor with variational mode decomposition (VMD). Firstly, a three-dimensional model of the interdigital electrostatic sensor is established using COMSOL simulation software. Based on its spatial dynamic sensitivity, a theoretical analysis of its spatial filtering characteristics is conducted to obtain a mathematical relationship for velocity measurement. Subsequently, the VMD decomposition method is applied to an experiment involving charged wires, with the experimental results verifying the effectiveness of VMD in achieving multi-scale decomposition of electrostatic signals. Finally, the proposed measurement method is validated on a gravity feeding device and a pneumatic conveying system. The experimental results demonstrate that the method exhibits good feasibility.

show abstract

The electrostatic charging trends and signal frequency analysis of a particulate material during pneumatic conveying

Cited by 17 publications

References 3 publications

Numerical analysis and experimental verification of the induced waveform characteristics for aeroengine gas path debris electrostatic sensor

Numerical analysis and experimental verification of the induced waveform characteristics for aeroengine gas path debris electrostatic sensor

A Comparative Study of the Preamplifiers in Electrostatic Sensors Through Analytical Modeling and Experimental Evaluation

Research on multi-velocity measurement method of solid particles based on interdigital electrostatic sensor

Contact Info

Product

Resources

About