Invention Grant
- Patent Title: Method for measuring an acceleration using a piezoelectric vibrating accelerometer
- Patent Title (中): 使用压电振动加速度计测量加速度的方法
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Application No.: US12669319Application Date: 2008-07-16
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Publication No.: US08413508B2Publication Date: 2013-04-09
- Inventor: Pierre Loisel
- Applicant: Pierre Loisel
- Applicant Address: FR Paris
- Assignee: Sagem Defense Securite
- Current Assignee: Sagem Defense Securite
- Current Assignee Address: FR Paris
- Agency: Muncy, Geissler, Olds & Lowe, PLLC
- Priority: FR0705220 20070719
- International Application: PCT/FR2008/001039 WO 20080716
- International Announcement: WO2009/030829 WO 20090312
- Main IPC: G01P15/097
- IPC: G01P15/097

Abstract:
The invention provides a method of measuring an acceleration by means of a vibrating accelerometer including a piezoelectric vibrating cell, the method having the steps: of exciting the vibration cell by means of an excitation signal at a resonant frequency of the vibrating cell; of calculating an acceleration value from a detection signal that results from the excitation signal; of exciting the vibrating cell with a correction excitation signal at a correction frequency that is different from the resonant frequency; of extracting a correction signal from the detection signal, the correction being representative of an electrical characteristic that is to be corrected; and of combining the correction signal with the detection signal so as to reduce the electrical characteristic that is to be corrected.
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