Invention Grant
- Patent Title: Microelectromechanical gyroscope with self-calibration function and method of calibrating a microelectromechanical gyroscope
- Patent Title (中): 具有自校准功能的微机电陀螺仪和校准微机电陀螺仪的方法
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Application No.: US13648215Application Date: 2012-10-09
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Publication No.: US09212910B2Publication Date: 2015-12-15
- Inventor: Andrea Donadel , Tommaso Ungaretti , Carlo Caminada , Luciano Prandi
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law Group PLLC
- Priority: ITTO2011A0688 20110728
- Main IPC: G01C15/14
- IPC: G01C15/14 ; G01P3/44 ; G01C19/5776

Abstract:
A microelectromechanical gyroscope having a supporting structure; a mass capacitively coupled to the supporting structure and movable with a first degree of freedom and a second degree of freedom, in response to rotations of the supporting structure about an axis; driving components, for keeping the mass in oscillation according to the first degree of freedom; a read interface for detecting transduction signals indicating the capacitive coupling between the mass and the supporting structure; and capacitive compensation modules for modifying the capacitive coupling between the mass and the supporting structure. Calibration components detect systematic errors from the transduction signals and modify the capacitive compensation modules as a function of the transduction signals so as to attenuate the systematic errors.
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