Invention Grant
- Patent Title: Micromachined cross-hatch vibratory gyroscopes
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Application No.: US14924078Application Date: 2015-10-27
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Publication No.: US09927239B2Publication Date: 2018-03-27
- Inventor: Eugene Oh Hwang , Sunil Ashok Bhave
- Applicant: Analog Devices, Inc.
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Wolf, Greenfield & Sacks, P.C.
- Main IPC: G01C19/00
- IPC: G01C19/00 ; G01C19/5656 ; G01C19/5649

Abstract:
One-axis and two-axis vibratory gyroscopes include a unitary resonator structure conceptually having four beams interconnected in a cross-hatch configuration. While each beam can be considered a unitary piece of material, each beam's attachment to two cross beams conceptually divides the resonant beam into a central section between the attachment points and two tail sections aft of the attachment points. The attachment points are preferably nodal points of the beam with respect to both a drive mode shape and a sense mode shape of the beam for the resonant mode in which the resonator is configured to operate. Thus, the location where two beams intersect is preferably a nodal point for both beams. The tail sections of each beam allow the resonant mode of the resonator to be carefully configured.
Public/Granted literature
- US20160349054A1 Micromachined Cross-Hatch Vibratory Gyroscopes Public/Granted day:2016-12-01
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