Spatial Selectivity of Linear Electrostatic Sensor Arrays for Particle Velocity Measurement

Xu, Chuanlong, Wang, Shimin, Yan, Yong (2013) Spatial Selectivity of Linear Electrostatic Sensor Arrays for Particle Velocity Measurement. IEEE Transactions on Instrumentation and Measurement, 62 (1). pp. 167-176. ISSN 0018-9456. (doi:10.1109/TIM.2012.2212495) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1109/TIM.2012.2212495

Abstract

The signal quality and accuracy of the spatial filtering method for solid particle velocity measurement based on a linear electrostatic sensor array (LESA) are dependent on the spatial filtering characteristics of the LESA and particle distribution in a pneumatic conveying pipeline. In this paper, the charge induced on a circular LESA with different geometric sizes from a single particle having a unity charge is mathematically modeled. Furthermore, a dimensionless computation model of the sensitivity of the LESA is suggested based on a fitted cosine function to the finite-element calculation results of the mathematical model, and the spatial filtering characteristics and spatial selectivity of the LESA are quantitatively investigated based on the computation model. Experimental work was performed on a purpose-built particle flow test rig to verify the dimensionless computation model and the modeling results. Results obtained reveal that the LESA acts as a narrow-bandpass filter in the temporal and spatial frequency domains, and its spatial selectivity is closely related to the number, spacing, and width of the electrode. These results provide an important basis for the performance improvement and optimized design of the LESA for particle velocity measurement.

Item Type: Article
DOI/Identification number: 10.1109/TIM.2012.2212495
Uncontrolled keywords: INSPEC: CONTROLLED INDEXING electrostatic devices filtering theory frequency-domain analysis particle velocity analysis pipes sensitivity sensor arrays velocity measurement INSPEC: NON CONTROLLED INDEXING LESA fitted cosine function geometric sizes linear electrostatic sensor array narrow-bandpass filter particle velocity measurement pneumatic conveying pipeline purpose-built particle flow test rig signal quality solid particle velocity measurement spatial frequency domains spatial selectivity temporal frequency domains unity charge AUTHOR KEYWORDS Electrostatic induction frequency response particle charging spatial filter velocity measurement IEEE TERMS Computational modeling Electrodes Electrostatics Mathematical model Sensitivity Sensors Velocity measurement
Subjects: T Technology
Divisions: Faculties > Sciences > School of Computing
Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems
Depositing User: Tina Thompson
Date Deposited: 22 Oct 2013 13:13 UTC
Last Modified: 29 May 2019 11:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/35580 (The current URI for this page, for reference purposes)
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