Position Sensor Signal Conditioning for Industrial Applications

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Position sensing is one of the most critical measurements in industrial hydraulics systems. Linear Variable Displacement Transformers (LVDTs) are one of the most common sensors used to measure position. The sensor requires AC excitation on primary coil and sensing on secondary coils. Sensor non linearity, temperature coefficient and sensitivity levels must be considered and properly compensated for. In addition signal amplitude and phase information sensed on the secondary requires demodulation to map the displacement within the sensor. These applications present a great case study covering the interaction between analog design aspects and digital signal processing. This presentation covers analog techniques for front end design, excitation circuit, signal processing, their implementation and silicon results. Various system level analysis techniques and performance parameters are discussed as well.



  Date and Time

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  • UPR Mayaguez
  • Mayaguez, Puerto Rico
  • United States
  • Building: Stefani
  • Room Number: S-113
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  • Co-sponsored by Texas Instruments, Inc.


  Speakers

Hector Torres of Texas Instruments, Inc.

Topic:

Position Sensor Signal Conditioning for Industrial Applications

Abstract


Position sensing is one of the most critical measurements in industrial hydraulics systems. Linear Variable Displacement Transformers (LVDTs) are one of the most common sensors used to measure position. The sensor requires AC excitation on primary coil and sensing on secondary coils. Sensor non linearity, temperature coefficient and sensitivity levels must be considered and properly compensated for. In addition signal amplitude and phase information sensed on the secondary requires demodulation to map the displacement within the sensor. These applications present a great case study covering the interaction between analog design aspects and digital signal processing. This presentation covers analog techniques for front end design, excitation circuit, signal processing, their implementation and silicon results. Various system level analysis techniques and performance parameters are discussed as well.

Biography:

Hector is a Senior Member Technical Staff at Texas Instruments in Dallas, Texas. He has 16 years of experience in the integrated circuit field primarily as a transistor level analog circuit designer and design lead. Hector has five approved U.S. patents under his name and six more under file. He is a BSEE from the University of Puerto Rico – Mayaguez.