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

13 Scopus citations

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

All Science Journal Classification (ASJC) codes

  • Instrumentation

Fingerprint Dive into the research topics of 'DSP-based modified Costas receiver for LVDT position sensors'. Together they form a unique fingerprint.

Cite this