公开(公告)号：US20140144230A1

公开(公告)日：2014-05-29

申请号：US13685364

申请日：2012-11-26

Applicant: STMICROELECTRONICS S.R.I.

Inventor： Davide Magnoni ,  Marco Garbarino ,  Andrea Donadel

IPC: G01C19/5712

CPC classification number: G01C19/5726 ,  G01C19/56

Abstract: A driving device of a driving mass of a gyroscope comprises a differential read amplifier to supply first signals indicating a rate of oscillation of the driving mass; a variable-gain amplifier to supply second signals to drive the driving mass based on said first signals; a voltage elevator providing a power supply signal to the variable-gain amplifier; a controller generating a first control signal to control a gain of the variable-gain amplifier; and a first comparator, coupled to the variable-gain amplifier, generating a second control signal based on a comparison of the first control signal with a threshold, the second control signal controlling at least one among: (i) the variable-gain amplifier in such a way that the gain is increased only during the start-up phase of the gyroscope, and (ii) the voltage elevator in such a way that the power supply signal is increased only during the start-up phase.

Abstract translation: 陀螺仪的驱动质量的驱动装置包括差分读取放大器，用于提供表示驱动质量的振荡速率的第一信号; 可变增益放大器，用于根据所述第一信号提供第二信号以驱动所述驱动质量; 向可变增益放大器提供电源信号的电压升降器; 产生控制可变增益放大器的增益的第一控制信号的控制器; 以及耦合到所述可变增益放大器的第一比较器，基于所述第一控制信号与阈值的比较产生第二控制信号，所述第二控制信号控制以下中的至少一个：（i）所述可变增益放大器 这样一种方式使增益仅在陀螺仪的启动阶段增加，和（ii）电压升降机使得电源信号仅在起动阶段增加。