公开(公告)号：US20130239680A1

公开(公告)日：2013-09-19

申请号：US13886774

申请日：2013-05-03

Applicant: STMICROELECTRONICS S.R.I.

Inventor： Luciano Prandi ,  Carlo Caminada ,  Alessandra Maria Rizzo Piazza Roncoroni

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5726 ,  G01C19/5762

Abstract: A gyroscope includes a body, a driving mass, which is mobile according to a driving axis, and a sensing mass, which is driven by the driving mass and is mobile according to a sensing axis, in response to rotations of the body. A driving device forms a microelectromechanical control loop with the body and the driving mass and maintains the driving mass in oscillation with a driving frequency. The driving device comprises a frequency detector, which supplies a clock signal at the frequency of oscillation of the driving mass, and a synchronization stage, which applies a calibrated phase shift to the clock signal so as to compensate a phase shift caused by components of the loop that are set between the driving mass and the control node.

Abstract translation: 陀螺仪包括根据驱动轴可移动的主体，驱动质量块，以及响应于身体的旋转而被驱动质量块驱动并且根据感测轴线可移动的感测质量块。 驱动装置与主体和驱动质量形成微机电控制回路，并以驱动频率保持驱动质量振荡。 驱动装置包括频率检测器，其以驱动质量的振荡频率提供时钟信号，以及同步级，其对校准的相移施加到时钟信号，以便补偿由相位差 循环，其设置在驱动质量块和控制节点之间。

公开(公告)号：US20150308829A1

公开(公告)日：2015-10-29

申请号：US14332211

申请日：2014-07-15

Applicant: STMicroelectronics S.r.I.

Inventor： Carlo Caminada ,  Luciano Prandi ,  Ernesto Lasalandra

IPC: G01C19/5712

CPC classification number: G01C19/5712 ,  G01C19/5726 ,  G01C19/5762

Abstract: A microelectromechanical gyroscope that includes a first mass oscillatable according to a first axis; an inertial sensor, including a second mass, drawn along by the first mass and constrained so as to oscillate according to a second axis, in response to a rotation of the gyroscope; a driving device coupled to the first mass so as to form a feedback control loop and configured to maintain the first mass in oscillation at a resonance frequency; and an open-loop reading device coupled to the inertial sensor for detecting displacements of the second mass according to the second axis. The driving device includes a read signal generator for supplying to the inertial sensor at least one read signal having the form of a square-wave signal of amplitude that sinusoidally varies with the resonance frequency.

Abstract translation: 一种微机电陀螺仪，其包括可根据第一轴可振荡的第一质量; 包括第二质量的惯性传感器，其响应于所述陀螺仪的旋转而被所述第一质量拉伸并被约束以便根据第二轴线振荡; 耦合到所述第一质量块的驱动装置，以便形成反馈控制回路并且被配置为将所述第一质量块以共振频率保持在振荡状态; 以及耦合到所述惯性传感器的开环读取装置，用于根据所述第二轴检测所述第二质量块的位移。 驱动装置包括一个读信号发生器，用于向惯性传感器提供至少一个具有振幅方波信号的形式的读信号，正弦波信号随谐振频率正弦变化。

公开(公告)号：US20130285767A1

公开(公告)日：2013-10-31

申请号：US13928024

申请日：2013-06-26

Applicant: STMicroelectronics S.r.I.

Inventor： Andrea Visconti ,  Luciano Prandi ,  Carlo Caminada ,  Paolo Angelini

IPC: H03H7/01

CPC classification number: H03H11/126 ,  H03H19/004

Abstract: A band-pass filter made up by an operational amplifier and by an input circuit. The input circuit is formed by a capacitive filtering element, connected to the input of the operational amplifier; a coupling switch, coupled between an input node and the capacitive filtering element; a capacitive sampling element, coupled between the input of the filter and the input node; and a sampling switch, coupled between the input node and a reference-potential line. The coupling switch and the input sampling switch close in phase opposition according to a succession of undesired components sampling and sensing steps, so that the capacitive sampling element forms a sampler for sampling the undesired component in the undesired components sampling step, in the absence of the component of interest, and forms a subtractor of the undesired components from the input signal in the sensing step.

Abstract translation: 由运算放大器和输入电路构成的带通滤波器。 输入电路由电容滤波元件形成，连接到运算放大器的输入端; 耦合开关，耦合在输入节点和电容滤波元件之间; 耦合在滤波器的输入端和输入节点之间的电容性采样元件; 以及耦合在输入节点和参考电位线之间的采样开关。 耦合开关和输入采样开关根据一系列不期望的分量采样和感测步骤接近相位，使得电容采样元件形成采样器，用于在不期望的分量采样步骤中采样不期望的分量，在不存在 并且在感测步骤中从输入信号形成不期望的分量的减法器。