Patent
Mems inertial sensor with frequency control and method
TLDR
In this paper, a signal for controlling a resonance frequency of the sense resonator is provided responsive to performing a Goertzel algorithm on the first base band signal and the second baseband signal.Abstract:
An inertial sensor has a transducer with a sense resonator. The sense resonator is oscillated. A signal responsive to the oscillation is provided. A first baseband signal and a second baseband signal are provided responsive to the signal responsive to the oscillation of the sense resonator. A signal for controlling a resonance frequency of the sense resonator is provided responsive to performing a Goertzel algorithm on the first baseband signal and the second baseband signal. One use of controlling the resonance frequency is to control an offset between the resonance frequency of the sense resonator and the frequency of the oscillation of drive masses in the sense resonator. Using the Goertzel algorithm is particularly efficient in controlling the resonance frequency.read more
Citations
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References
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Journal ArticleDOI
Adaptive mode tuning for vibrational gyroscopes
TL;DR: An adaptive controller for tuning the natural frequency of the drive axis of a vibrational gyroscope, which is an attractive alternative to a phase-locked loop, since it introduces feedback, which can reduce the effects of imprecise fabrication.
Journal ArticleDOI
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TL;DR: A special-purpose integrated circuit that accomplishes the real-time control and filtering tasks for the JPL-Boeing micromachined gyroscopes using a flexible, low-power implementation is presented.
Patent
Microprocessor having environmental sensing capability
TL;DR: In this paper, a microprocessor having a monolithically integrated environmental sensor is provided, which is shielded from an environmental signal by isolation which is specific to the type of sensor used, thereby allowing the sensor to be exposed to the environmental signal.
Journal ArticleDOI
A systematic method for tuning the dynamics of electrostatically actuated vibratory gyros
TL;DR: A systematic approach for tuning these modes in vibratory gyros that employ electrostatic actuation by showing how a parametric model can be fit to empirical frequency response data by solving a generalized eigenvalue problem.
Patent
System and method for robust tone detection
Richard Simeon,Damian Hamme +1 more
TL;DR: In this paper, a tone detection device is provided which includes a Fourier Transform means for performing Fourier transform on an incoming signal, and a normalizing means receives the generated frequency spectrum and normalizes the spectrum for magnitude.