System and method for providing high-range capability with closed-loop inertial sensors
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United States of America Patent
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Sep 20, 2011
Grant Date -
Nov 19, 2009
app pub date -
May 13, 2009
filing date -
May 16, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An inertial sensing system including an inertial sensor having a proof mass providing a deflection signal in response to application of an inertial force, wherein the proof mass has a physical deflection limit and a selected saturation limit set below the deflection limit, elements for providing a closed-loop output in response to the deflection signal from the inertial sensor, wherein the closed-loop output is proportional to the inertial force until the saturation limit of the inertial sensor is reached, elements for providing an open-loop output in response to the deflection signal from the inertial sensor once the saturation limit is reached, and elements for summing the closed-loop output with the open-loop output when the saturation limit of the inertial sensor is reached, to provide a high-range output response for the system.
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