System and method for calibrating an inertial sensor

A system (40) for calibrating an inertial sensor (20) includes a power source (42), a frequency measurement subsystem (44, 48), and a gain determination subsystem (52). A calibration process (110) using the system (40) entails applying (116) a bias voltage (66) to the inertial sensor (20), measuring...

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Bibliographische Detailangaben
Hauptverfasser:	Kniffin Margaret L, McNeil Andrew C
Format:	Patent
Sprache:	eng
Schlagworte:	DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A system (40) for calibrating an inertial sensor (20) includes a power source (42), a frequency measurement subsystem (44, 48), and a gain determination subsystem (52). A calibration process (110) using the system (40) entails applying (116) a bias voltage (66) to the inertial sensor (20), measuring (114) a drive resonant frequency (46), and measuring (118) a sense resonant frequency (50) of the inertial sensor (20) produced in response to the bias voltage (66). A gain value (32) is determined (124) for calibrating (144) the inertial sensor (20) using a relationship (140) between the sense resonant frequency (50) and the bias voltage (66) without imposing an inertial stimulus on the inertial sensor (20).