公开(公告)号：US09784581B2

公开(公告)日：2017-10-10

申请号：US14151426

申请日：2014-01-09

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Donadel ,  Davide Magnoni ,  Marco Garbarino

IPC: G01C19/5776 ,  G01C19/5726

CPC classification number: G01C19/5776 ,  G01C19/5726

Abstract: A gyroscope includes: a mass, which is movable with respect to a supporting body; a driving loop for keeping the mass in oscillation according to a driving axis; a reading device, which supplying an output signal indicating an angular speed of the body; and a compensation device, for attenuating spurious signal components in quadrature with respect to a velocity of oscillation of the mass. The reading device includes an amplifier, which supplies a transduction signal indicating a position of the mass according to a sensing axis. The compensation device forms a control loop with the amplifier, extracts from the transduction signal an error signal representing quadrature components in the transduction signal, and supplies to the amplifier a compensation signal such as to attenuate the error signal.

公开(公告)号：US09829319B2

公开(公告)日：2017-11-28

申请号：US14985071

申请日：2015-12-30

Applicant: STMicroelectronics S.R.L.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/56 ,  G01C19/5762 ,  G01C19/5726

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

公开(公告)号：US10480944B2

公开(公告)日：2019-11-19

申请号：US15707707

申请日：2017-09-18

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Andrea Donadel ,  Davide Magnoni ,  Marco Garbarino

IPC: G01C19/5776 ,  G01C19/5726

Abstract: A gyroscope includes: a mass, which is movable with respect to a supporting body; a driving loop for keeping the mass in oscillation according to a driving axis; a reading device, which supplying an output signal indicating an angular speed of the body; and a compensation device, for attenuating spurious signal components in quadrature with respect to a velocity of oscillation of the mass. The reading device includes an amplifier, which supplies a transduction signal indicating a position of the mass according to a sensing axis. The compensation device forms a control loop with the amplifier, extracts from the transduction signal an error signal representing quadrature components in the transduction signal, and supplies to the amplifier a compensation signal such as to attenuate the error signal.

公开(公告)号：US09762223B2

公开(公告)日：2017-09-12

申请号：US15156162

申请日：2016-05-16

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Davide Magnoni

IPC: H03K5/15 ,  H03K5/156 ,  H03K3/033

CPC classification number: H03K5/1565 ,  H03K3/017 ,  H03K3/033

Abstract: A clock-signal generator circuit, for generating an output clock signal starting from an input clock signal, includes: a monostable stage having a clock input configured to receive the input clock signal, a control input configured to receive a control signal, and an output configured to supply the output clock signal having a duty cycle variable as a function of the control signal; and a feedback loop, operatively coupled to the monostable stage for generating the control signal as a function of a detected value, and of a desired value, of the duty cycle of the output clock signal.

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：US09448071B2

公开(公告)日：2016-09-20

申请号：US13799243

申请日：2013-03-13

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/56 ,  G01C19/5762 ,  G01C19/5726

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

Abstract translation: 微机电装置包括：主体; 弹性联接到所述主体并且相对于所述主体可根据自由度而可振动的可动质量块; 频率检测器，被配置为检测所述可移动质量块的当前振荡频率; 以及强制级，其电容耦合到所述可移动质量块，并且被配置为至少在第一瞬态操作条件下通过强制具有等于由所述频率检测器检测到的当前振荡频率的强制频率的信号向所述可移动质量块提供能量。

公开(公告)号：US20160109237A1

公开(公告)日：2016-04-21

申请号：US14985071

申请日：2015-12-30

Applicant: STMicroelectronics S.R.L.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/5762 ,  G01C19/5726

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

Abstract translation: 微机电装置包括：主体; 弹性联接到所述主体并且相对于所述主体可根据自由度而可振动的可动质量块; 频率检测器，被配置为检测所述可移动质量块的当前振荡频率; 以及强制级，其电容耦合到所述可移动质量块，并且被配置为至少在第一瞬态操作条件下通过强制具有等于由所述频率检测器检测到的当前振荡频率的强制频率的信号向所述可移动质量块提供能量。

公开(公告)号：US20140260609A1

公开(公告)日：2014-09-18

申请号：US13799243

申请日：2013-03-13

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Marco Garbarino ,  Andrea Donadel ,  Davide Magnoni ,  Carlo Valzasina

IPC: G01C19/56

CPC classification number: G01C19/5762 ,  G01C19/5726

Abstract: A microelectromechanical device includes: a body; a movable mass, elastically coupled to the body and oscillatable with respect to the body according to a degree of freedom; a frequency detector, configured to detect a current oscillation frequency of the movable mass; and a forcing stage, capacitively coupled to the movable mass and configured to provide energy to the movable mass through forcing signals having a forcing frequency equal to the current oscillation frequency detected by the frequency detector, at least in a first transient operating condition.

Abstract translation: 微机电装置包括：主体; 弹性联接到所述主体并且相对于所述主体可根据自由度而可振动的可动质量块; 频率检测器，被配置为检测所述可移动质量块的当前振荡频率; 以及强制级，其电容耦合到所述可移动质量块，并且被配置为至少在第一瞬态操作条件下通过强制具有等于由所述频率检测器检测到的当前振荡频率的强制频率的信号向所述可移动质量块提供能量。

公开(公告)号：US20140190258A1

公开(公告)日：2014-07-10

申请号：US14151426

申请日：2014-01-09

Applicant: STMicroelectronics S.r.l.

Inventor： Andrea Donadel ,  Davide Magnoni ,  Marco Garbarino

IPC: G01C19/5776

CPC classification number: G01C19/5776 ,  G01C19/5726

Abstract: A gyroscope includes: a mass, which is movable with respect to a supporting body; a driving loop for keeping the mass in oscillation according to a driving axis; a reading device, which supplying an output signal indicating an angular speed of the body; and a compensation device, for attenuating spurious signal components in quadrature with respect to a velocity of oscillation of the mass. The reading device includes an amplifier, which supplies a transduction signal indicating a position of the mass according to a sensing axis. The compensation device forms a control loop with the amplifier, extracts from the transduction signal an error signal representing quadrature components in the transduction signal, and supplies to the amplifier a compensation signal such as to attenuate the error signal.

Abstract translation: 陀螺仪包括：可相对于支撑体移动的质量块; 用于根据驱动轴保持质量在振荡中的驱动回路; 读取装置，其提供表示身体的角速度的输出信号; 以及补偿装置，用于相对于质量的振荡速度衰减正交的寄生信号分量。 读取装置包括放大器，其根据感测轴提供指示质量位置的换能信号。 补偿装置与放大器形成控制回路，从换能信号中提取表示换能信号中的正交分量的误差信号，并向放大器提供补偿信号，以便衰减误差信号。