Flow rate sensor correction device, program for correction device, and correction method
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United States of America Patent
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Jun 25, 2019
Grant Date -
Jun 15, 2017
app pub date -
Dec 13, 2016
filing date -
Dec 15, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
In order to reduce a flow rate error over the entire range of a sensor output value even when the relationship between the sensor output value and a flow rate value is poor in linearity, a flow rate sensor correction device includes: a sensitivity setting part adapted to set a sensitivity coefficient on the basis of an initial value and a sensitivity correction value and adjust the sensitivity of the flow rate sensor; a function calculation part adapted to calculate a corrected flow rate characteristic function on the basis of a function correction value, which is determined on the basis of the flow rate value, and a standard flow rate characteristic function; and a function modification part adapted to make a function storage part store, as a flow rate characteristic function, a final flow rate characteristic function based on the corrected flow rate characteristic.
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