DSP-based modified Costas receiver for LVDT position sensors

Ralph M. Ford, Robert S. Weissbach, David Loker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

A novel signal conditioning system for Linear Variable Differential Transformers (LVDT) is presented. This system considers the signals involved in the operation of the LVDT to be analogous to a Double Sideband Suppressed Carrier AM (DSBSC-AM) communication system, where the position information is akin to the signal to be transmitted and the input sine wave excitation to the LVDT is akin to the carrier wave. Signal conditioning is achieved through a modified digital signal processor-based Costas receiver. This system has better dynamic response than existing solutions and better noise rejection than commercially available solutions. Static testing of the system using both 4-wire and 5-wire LVDTs verifies that the conditioner meets or exceeds the linearity performance of existing signal conditioning systems over the full-scale operating range. In addition, this system requires no phase compensation network or manual tuning.

Original languageEnglish (US)
Title of host publicationConference Record - IEEE Instrumentation and Measurement Technology Conference
PublisherIEEE
Pages1448-1452
Number of pages5
Volume3
StatePublished - 2000
EventIMTC/2000 - 17th IEEE Instrumentation and Measurement Technology Conference 'Smart Connectivity: Integrating Measurement and Control' - Baltimore, MD, USA
Duration: May 1 2000May 4 2000

Other

OtherIMTC/2000 - 17th IEEE Instrumentation and Measurement Technology Conference 'Smart Connectivity: Integrating Measurement and Control'
CityBaltimore, MD, USA
Period5/1/005/4/00

Fingerprint

transformers
Signal processing
receivers
sensors
Sensors
conditioning
Wire
Carrier communication
Digital signal processors
Dynamic response
Communication systems
Tuning
wire
carrier waves
sine waves
wave excitation
Testing
dynamic response
sidebands
rejection

All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Ford, R. M., Weissbach, R. S., & Loker, D. (2000). DSP-based modified Costas receiver for LVDT position sensors. In Conference Record - IEEE Instrumentation and Measurement Technology Conference (Vol. 3, pp. 1448-1452). IEEE.
Ford, Ralph M. ; Weissbach, Robert S. ; Loker, David. / DSP-based modified Costas receiver for LVDT position sensors. Conference Record - IEEE Instrumentation and Measurement Technology Conference. Vol. 3 IEEE, 2000. pp. 1448-1452
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abstract = "A novel signal conditioning system for Linear Variable Differential Transformers (LVDT) is presented. This system considers the signals involved in the operation of the LVDT to be analogous to a Double Sideband Suppressed Carrier AM (DSBSC-AM) communication system, where the position information is akin to the signal to be transmitted and the input sine wave excitation to the LVDT is akin to the carrier wave. Signal conditioning is achieved through a modified digital signal processor-based Costas receiver. This system has better dynamic response than existing solutions and better noise rejection than commercially available solutions. Static testing of the system using both 4-wire and 5-wire LVDTs verifies that the conditioner meets or exceeds the linearity performance of existing signal conditioning systems over the full-scale operating range. In addition, this system requires no phase compensation network or manual tuning.",
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Ford, RM, Weissbach, RS & Loker, D 2000, DSP-based modified Costas receiver for LVDT position sensors. in Conference Record - IEEE Instrumentation and Measurement Technology Conference. vol. 3, IEEE, pp. 1448-1452, IMTC/2000 - 17th IEEE Instrumentation and Measurement Technology Conference 'Smart Connectivity: Integrating Measurement and Control', Baltimore, MD, USA, 5/1/00.

DSP-based modified Costas receiver for LVDT position sensors. / Ford, Ralph M.; Weissbach, Robert S.; Loker, David.

Conference Record - IEEE Instrumentation and Measurement Technology Conference. Vol. 3 IEEE, 2000. p. 1448-1452.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - DSP-based modified Costas receiver for LVDT position sensors

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N2 - A novel signal conditioning system for Linear Variable Differential Transformers (LVDT) is presented. This system considers the signals involved in the operation of the LVDT to be analogous to a Double Sideband Suppressed Carrier AM (DSBSC-AM) communication system, where the position information is akin to the signal to be transmitted and the input sine wave excitation to the LVDT is akin to the carrier wave. Signal conditioning is achieved through a modified digital signal processor-based Costas receiver. This system has better dynamic response than existing solutions and better noise rejection than commercially available solutions. Static testing of the system using both 4-wire and 5-wire LVDTs verifies that the conditioner meets or exceeds the linearity performance of existing signal conditioning systems over the full-scale operating range. In addition, this system requires no phase compensation network or manual tuning.

AB - A novel signal conditioning system for Linear Variable Differential Transformers (LVDT) is presented. This system considers the signals involved in the operation of the LVDT to be analogous to a Double Sideband Suppressed Carrier AM (DSBSC-AM) communication system, where the position information is akin to the signal to be transmitted and the input sine wave excitation to the LVDT is akin to the carrier wave. Signal conditioning is achieved through a modified digital signal processor-based Costas receiver. This system has better dynamic response than existing solutions and better noise rejection than commercially available solutions. Static testing of the system using both 4-wire and 5-wire LVDTs verifies that the conditioner meets or exceeds the linearity performance of existing signal conditioning systems over the full-scale operating range. In addition, this system requires no phase compensation network or manual tuning.

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Ford RM, Weissbach RS, Loker D. DSP-based modified Costas receiver for LVDT position sensors. In Conference Record - IEEE Instrumentation and Measurement Technology Conference. Vol. 3. IEEE. 2000. p. 1448-1452