Demodulation Techniques for Self-Oscillating Eddy-Current Displacement Sensor Interfaces:  A Review

Vikram Chaturvedi; Mohammad Reza Nabavi; Johan G. Vogel; Stoyan Nihtianov

doi:10.1109/JSEN.2017.2677526

Demodulation Techniques for Self-Oscillating Eddy-Current Displacement Sensor Interfaces: A Review

Vikram Chaturvedi, Mohammad Reza Nabavi, Johan G. Vogel, Stoyan Nihtianov

Electronic Instrumentation

Research output: Contribution to journal › Article › Scientific › peer-review

21 Citations (Scopus)

Abstract

This paper presents a comprehensive study of demodulation techniques for high-frequency self-oscillating eddy-current displacement sensor (ECDS) interfaces. Increasing the excitation frequency is essential for lowering the skin depth in many demanding industrial applications, that require better resolution. However, a high excitation frequency poses design challenges in the readout electronics, and particularly in the demodulation functional block. We analyze noise, linearity, and stability design considerations in amplitude demodulators for nanometer and sub-nanometer ECDSs. A number of state-of-the-art amplitude demodulation techniques employed in high-frequency ECDSs are reviewed, and their pros and cons are evaluated.

Original language	English
Pages (from-to)	2617-2624
Number of pages	8
Journal	IEEE Sensors Journal
Volume	17
Issue number	9
DOIs	https://doi.org/10.1109/JSEN.2017.2677526
Publication status	Published - 2017

Keywords

displacement measurement
ECDS interface
amplitude demodulation technique

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10.1109/JSEN.2017.2677526

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title = "Demodulation Techniques for Self-Oscillating Eddy-Current Displacement Sensor Interfaces: A Review",

abstract = "This paper presents a comprehensive study of demodulation techniques for high-frequency self-oscillating eddy-current displacement sensor (ECDS) interfaces. Increasing the excitation frequency is essential for lowering the skin depth in many demanding industrial applications, that require better resolution. However, a high excitation frequency poses design challenges in the readout electronics, and particularly in the demodulation functional block. We analyze noise, linearity, and stability design considerations in amplitude demodulators for nanometer and sub-nanometer ECDSs. A number of state-of-the-art amplitude demodulation techniques employed in high-frequency ECDSs are reviewed, and their pros and cons are evaluated.",

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AU - Nabavi, Mohammad Reza

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AU - Nihtianov, Stoyan

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AB - This paper presents a comprehensive study of demodulation techniques for high-frequency self-oscillating eddy-current displacement sensor (ECDS) interfaces. Increasing the excitation frequency is essential for lowering the skin depth in many demanding industrial applications, that require better resolution. However, a high excitation frequency poses design challenges in the readout electronics, and particularly in the demodulation functional block. We analyze noise, linearity, and stability design considerations in amplitude demodulators for nanometer and sub-nanometer ECDSs. A number of state-of-the-art amplitude demodulation techniques employed in high-frequency ECDSs are reviewed, and their pros and cons are evaluated.

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KW - amplitude demodulation technique

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JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

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ER -

Demodulation Techniques for Self-Oscillating Eddy-Current Displacement Sensor Interfaces: A Review

Abstract

Keywords

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