Lorentz actuator mechanism calibration
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United States of America Patent
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Nov 8, 2016
Grant Date -
Mar 10, 2016
app pub date -
Nov 10, 2014
filing date -
Sep 8, 2014
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Abstract
An actuator module which includes a Hall sensor, configured to generate output signals indicating a displacement of a mobile component by a Lorentz actuator mechanism, can be calibrated to remove corruption of the output signals due to magnetic fields generated by a coil assembly of the actuator mechanism. Such calibration can include tracking and manipulating one or more of current strength, output signal voltage strength, and mobile component displacement to establish a relationship between output signal voltage and current applied to the coil assembly. The relationship can be used to generate, for a given generated output signal voltage and applied current strength, an offset signal voltage which can be subtracted from the voltage strength of the output signal to determine a corrected output signal, independent of coil assembly corruption, which indicates a displacement of the mobile component.
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