公开(公告)号：US09146109B2

公开(公告)日：2015-09-29

申请号：US13685364

申请日：2012-11-26

Applicant: STMicroelectronics S.r.l.

Inventor： Davide Magnoni ,  Marco Garbarino ,  Andrea Donadel

IPC: G01C19/56 ,  G01C19/5726

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。

公开(公告)号：US08820136B2

公开(公告)日：2014-09-02

申请号：US13890991

申请日：2013-05-09

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Donadel ,  Luciano Prandi ,  Carlo Caminada

IPC: G01C19/56

CPC classification number: G01P21/00 ,  G01C19/56

Abstract: A microelectromechanical gyroscope includes a body and a sensing mass, which is movable with a degree of freedom in response to rotations of the body about an axis. A self-test actuator is capacitively coupled to the sensing mass for supplying a self-test signal. The capacitive coupling causes, in response to the self-test signal, electrostatic forces that are able to move the sensing mass in accordance with the degree of freedom at an actuation frequency. A sensing device detects transduction signals indicating displacements of the sensing mass in accordance with the degree of freedom. The sensing device is configured for discriminating, in the transduction signals, spectral components that are correlated to the actuation frequency and indicate the movement of the sensing mass as a result of the self-test signal.

Abstract translation: 微机电陀螺仪包括主体和感测质量块，其能够响应于身体围绕轴的旋转而具有自由度移动。 自检致动器电容耦合到感测质量块，用于提供自检信号。 电容耦合响应于自检信号，使得能够根据致动频率下的自由度移动感测质量的静电力。 感测装置根据自由度检测指示感测质量的位移的换能信号。 感测装置被配置为在转导信号中鉴别与致动频率相关的频谱分量，并且指示感测质量作为自检信号的结果的移动。

公开(公告)号：US20130239651A1

公开(公告)日：2013-09-19

申请号：US13890991

申请日：2013-05-09

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Andrea Donadel ,  Luciano Prandi ,  Carlo Caminada

IPC: G01P21/00

CPC classification number: G01P21/00 ,  G01C19/56

Abstract: A microelectromechanical gyroscope includes a body and a sensing mass, which is movable with a degree of freedom in response to rotations of the body about an axis. A self-test actuator is capacitively coupled to the sensing mass for supplying a self-test signal. The capacitive coupling causes, in response to the self-test signal, electrostatic forces that are able to move the sensing mass in accordance with the degree of freedom at an actuation frequency. A sensing device detects transduction signals indicating displacements of the sensing mass in accordance with the degree of freedom. The sensing device is configured for discriminating, in the transduction signals, spectral components that are correlated to the actuation frequency and indicate the movement of the sensing mass as a result of the self-test signal.

Abstract translation: 微机电陀螺仪包括主体和感测质量块，其能够响应于身体围绕轴的旋转而具有自由度移动。 自检致动器电容耦合到感测质量块，用于提供自检信号。 电容耦合响应于自检信号，使得能够根据致动频率下的自由度移动感测质量的静电力。 感测装置根据自由度检测指示感测质量的位移的换能信号。 感测装置被配置为在转导信号中鉴别与致动频率相关的频谱分量，并且指示感测质量作为自检信号的结果的移动。