Invention Grant
- Patent Title: Reducing resonance peaks and drive tones from a micro-electro-mechanical system gyroscope response
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Application No.: US14814016Application Date: 2015-07-30
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Publication No.: US09885577B2Publication Date: 2018-02-06
- Inventor: Vadim Tsinker
- Applicant: INVENSENSE, INC.
- Applicant Address: US CA San Jose
- Assignee: INVENSENSE, INC.
- Current Assignee: INVENSENSE, INC.
- Current Assignee Address: US CA San Jose
- Agency: Amin, Turocy & Watson, LLP
- Main IPC: G01C19/56
- IPC: G01C19/56 ; G01C19/5776 ; G01C19/5719

Abstract:
Reducing noise from drive tone and sense resonance peaks of a micro-electro-mechanical system (MEMS) gyroscope output using a notch filter is presented herein. The MEMS gyroscope can include a drive oscillation component configured to vibrate a sensor mass at a drive resonance frequency; a sense circuit configured to detect a deflection of the sensor mass, and generate, based on the deflection and the drive resonance frequency, a demodulated output; and a signal processing component configured to receive a set of frequencies comprising a first value representing the drive resonance frequency and a second value corresponding to a sense resonance frequency associated with the sense circuit, and apply, based on the first value and the second value, a notch filter to the demodulated output to obtain a filtered output.
Public/Granted literature
- US20170030714A1 REDUCING RESONANCE PEAKS AND DRIVE TONES FROM A MICRO-ELECTRO-MECHANICAL SYSTEM GYROSCOPE RESPONSE Public/Granted day:2017-02-02
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