A Position Sensor with Novel Configuration of Linear Variable Differential Transformer
Typ dokumentu
článek v časopisejournal article
Peer-reviewed
submittedVersion
Autor
Mirzaei M.
Ripka P.
Grim V.
Práva
openAccessMetadata
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This paper presents a position sensor
based on a novel configuration of linear variable
differential transformer. Design and optimization of the
position sensor using finite element method are
presented. The measurements are also conducted to
validate experimentally the sensor performance. The
sensor has short air core coils and long magnetic
armatures. The axis of the rectangular excitation coil and
two antiserially connected rectangular pick up coils is
perpendicular to the motion direction of the position
sensor. The coils are located between two parallel silicon
steel laminations serving as the armatures. The position
sensor is optimized with compromise between minimization of nonlinearity error and maximum sensitivity. The main
advantage of the proposed position sensor is the small ratio of coils dimensions to the working range. The position
sensor is operated for excitation frequencies of 500 Hz, 1000 Hz, and 2000 Hz. The maximum nonlinearity error is less
than 1.5% for the theoretical results and it is less than 2% for the measured results in ±90 mm position range.
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Kolekce
- Publikační činnost ČVUT [1369]