Precision LVDT signal conditioning using direct RMS to DC conversion
Cheng-Wei Pei
Abstract
Precision linear variable differential transformer (LVDT) signal conditioning using direct RMS to DC conversion is discussed.
Keywords
Linear variable differential transformer
LVDT
LVDT signal conditioning
LTC1967
Introduction
Linear variable differential transformers (LVDTs) are theoretically infinite-resolution displacement measurement devices. An LVDT operates by comparing the magnetic flux coupled into two transformer secondary windings to determine the displacement of a moving transformer core. A low distortion sine wave acts as the input. The amplitude and phase of the output signal across the two secondary windings determine ...
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