Sensor apparatus, methods and computer program products employing vibrational shape control

A parameter sensor including a conduit configured to contain a material is controlled. A first excitation applied to the conduit is determined. Motion of the conduit in response to the first excitation is determined. A second excitation to apply to the conduit is determined from the determined first...

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Bibliographic Details
Main Author WHEELER MATTHEW GLEN
Format Patent
LanguageEnglish
Published 12.08.2003
Edition7
Subjects
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TESTING
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Summary:A parameter sensor including a conduit configured to contain a material is controlled. A first excitation applied to the conduit is determined. Motion of the conduit in response to the first excitation is determined. A second excitation to apply to the conduit is determined from the determined first excitation, the determined motion in response to the first excitation, a desired motion for the conduit, and a frequency response for the conduit. In particular, excitations may be iteratively determined and applied to the conduit, and motion signals representing motion of the excited conduit may be processed to generate process parameter estimates, such as mass flow rate estimates. The frequency response may be assumed to be time-invariant, or may be adaptively estimated. The invention may be embodied as methods, apparatus and computer program products.
Bibliography:Application Number: US20010942189