Invention Application
- Patent Title: DRIVE CIRCUITRY AND METHOD FOR A VIBRATION GYROSCOPE
- Patent Title (中): 驱动电路和振动陀螺仪的方法
-
Application No.: US14556634Application Date: 2014-12-01
-
Publication No.: US20150345946A1Publication Date: 2015-12-03
- Inventor: THIERRY CASSAGNES , HUGUES BEAULATON , LAURENT CORNIBERT , MARIANNE MALEYRAN , VOLKER WAHL
- Applicant: FREESCALE SEMICONDUCTOR, INC.
- Priority: IBPCT/IB2014/002102 20140424
- Main IPC: G01C19/5712
- IPC: G01C19/5712

Abstract:
A drive circuitry for a vibration gyroscope is described. The drive circuitry comprises a digital phase shifter, a variable gain amplifier and a pulse signal generator arranged to generate a digital pulse signal having a frequency substantially equal to a drive frequency of the vibration gyroscope. A controller is arranged to connect drive actuation units of the vibration gyroscope to outputs of the pulse signal generator during a first start-up time period, to outputs of the digital phase shifter during a second start-up time period, and to outputs of the variable gain amplifier during a measurement time period. Furthermore, a vibration gyroscope device and a method of driving a vibration gyroscope are described.
Public/Granted literature
- US09835455B2 Drive circuitry and method for a vibration gyroscope Public/Granted day:2017-12-05
Information query