公开(公告)号：US20150345946A1

公开(公告)日：2015-12-03

申请号：US14556634

申请日：2014-12-01

Applicant: FREESCALE SEMICONDUCTOR, INC.

Inventor： THIERRY CASSAGNES ,  HUGUES BEAULATON ,  LAURENT CORNIBERT ,  MARIANNE MALEYRAN ,  VOLKER WAHL

IPC: G01C19/5712

CPC classification number: G01C19/5776

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.

Abstract translation: 描述了一种用于振动陀螺仪的驱动电路。 驱动电路包括数字移相器，可变增益放大器和脉冲信号发生器，其被布置成产生具有与振动陀螺仪的驱动频率基本相等的频率的数字脉冲信号。 控制器被布置成将振动陀螺仪的驱动致动单元与第一启动时间段内的脉冲信号发生器的输出相连，在第二启动时段期间将数字移相器的输出连接到 可变增益放大器在测量时间段。 此外，描述振动陀螺仪装置和驱动振动陀螺仪的方法。