Lumedyne Technologies, Inc.

Google Inc.

Xiaojun Huang

Richard Lee Waters

John David Jacobs

Mark Steven Fralick

Charles Harold Tally, Iv

Yanting Zhang

Ozan Anac

Brad Wesley Chisum

Jeffrey Alan Brayshaw

Systems and methods are described herein for detecting and measuring inertial parameters, such as acceleration. In particular, the systems and methods relate to vibratory inertial sensors implementing time-domain sensing techniques. Within a composite mass sensor system, a sense mass may oscillate at a frequency different from its actuation frequency, allowing flexibility when integrating the sensor into drive systems without sacrificing sensitivity.

Composite vibratory in-plane accelerometer

Systems and methods are disclosed herein for extracting system parameters from nonlinear periodic signals from sensors. A sensor such as an inertial device includes a first structure and a second structure that is springedly coupled to the first structure. The sensor is configured to generate an output voltage based on a current between the first and second structures. Monotonic motion of the second structure relative to the first structure causes a reversal in direction of the current.

Systems and methods for extracting system parameters from nonlinear periodic signals from sensors

Systems and methods are disclosed herein for determining rotation. A gyroscope includes a drive frame and a base, the drive frame springedly coupled to the base. The gyroscope includes a drive structure configured for causing a drive frame to oscillate along a first axis. The gyroscope includes a sense mass springedly coupled to the drive frame. The gyroscope includes a sense mass sense structure configured for measuring a displacement of the sense mass along a second axis orthogonal to the first axis. The gyroscope includes measurement circuitry configured for determining a velocity of the drive frame, extracting a Coriolis component from the measured displacement, and determining, based on the determined velocity and extracted Coriolis component, a rotation rate of the gyroscope.

Systems and methods for controlling oscillation of a gyroscope

Systems and methods for determining rotation from nonlinear periodic signals

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San Diego, CA, United States of America

Xiaojun Huang