公开(公告)号：US20130170091A1

公开(公告)日：2013-07-04

申请号：US13707389

申请日：2012-12-06

Applicant: STMicroelectronics S.r.l.

Inventor： Luciano Prandi

IPC: H01G7/06

CPC classification number: H01G7/06 ,  G01C19/5726 ,  G01C19/5755 ,  Y10T29/49826

Abstract: An electronic device includes a capacitive component with variable capacitance coupled to a control stage that controls the capacitance, based on a reference signal, with a reference frequency, and an excitation signal, that is a multiple of the reference frequency. The capacitive component includes a variable capacitive network having a plurality of switched capacitors, each being switchable between a first configuration, where it is connected between connection terminals of the capacitive component, and a second configuration, where it is connected at most to one of the connection terminals. The control stage includes a logic module, coupled to the variable capacitive network for switching periodically each capacitor between the first configuration and the second configuration. A sign circuit, coupled to the capacitive component supplies a control signal having edges concordant with the excitation signal in one half-period of each cycle of the reference signal and discordant edges in the other half-period.

Abstract translation: 电子设备包括具有可变电容的电容部件，所述电容部件与控制级相耦合，所述控制级基于参考频率的参考信号和作为参考频率的倍数的激励信号来控制电容。 电容性部件包括具有多个开关电容器的可变电容网络，每个开关电容器可在第一配置之间切换，其中第一配置连接在电容部件的连接端子与第二配置之间，在第二配置中，其最多连接到 连接端子。 控制级包括耦合到可变电容网络的逻辑模块，用于在第一配置和第二配置之间周期性地切换每个电容器。 耦合到电容部件的符号电路在参考信号的每个周期的一个半周期和另一个半周期中的不一致边沿提供具有与激励信号一致的边的控制信号。

公开(公告)号：US20130118256A1

公开(公告)日：2013-05-16

申请号：US13739430

申请日：2013-01-11

Applicant: STMicroelectronics S.r.l.

Inventor： Luciano Prandi ,  Carlo Caminada

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5726 ,  G01C19/5762 ,  H03F3/70

Abstract: A MEMS gyroscope includes: a microstructure having a fixed structure, a driving mass, movable with respect to the fixed structure according to a driving axis, and a sensing mass, mechanically coupled to the driving mass so as to be drawn in motion according to the driving axis and movable with respect to the driving mass according to a sensing axis, in response to rotations of the microstructure; and a driving device, for keeping the driving mass in oscillation with a driving frequency. The driving device includes a discrete-time sensing interface, for detecting a position of the driving mass with respect to the driving axis and a control stage for controlling the driving frequency on the basis of the position of the driving mass.

Abstract translation: MEMS陀螺仪包括：具有固定结构的微结构，可根据驱动轴相对于固定结构移动的驱动质量块，以及感测质量块，机械地联接到驱动质量块，以便根据 响应于微结构的旋转，驱动轴线和根据感测轴线可相对于驱动质量块移动; 以及驱动装置，用于保持驱动质量以驱动频率振荡。 驱动装置包括用于检测驱动质量块相对于驱动轴的位置的离散时间感测接口和用于基于驱动质量块的位置来控制驱动频率的控制级。

公开(公告)号：USRE48086E1

公开(公告)日：2020-07-07

申请号：US13952514

申请日：2013-07-26

Applicant: STMicroelectronics S.r.l.

Inventor： Luciano Prandi ,  Carlo Caminada ,  Paolo Invernizzi

IPC: H03D1/00 ,  G01C19/00

Abstract: A demodulator is provided for demodulating an amplitude-modulated input signal defined by a carrier signal having a carrier frequency modulated by a modulating signal, the demodulator including an amplifier stage having a gain and structured to receive the amplitude-modulated input signal, and a gain control stage coupled to the amplifier stage and configured to vary the gain of the amplifier stage according to the carrier frequency of the carrier signal.

公开(公告)号：US09234755B2

公开(公告)日：2016-01-12

申请号：US13886774

申请日：2013-05-03

Applicant: STMicroelectronics S.r.l.

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

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

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.

公开(公告)号：USRE45439E1

公开(公告)日：2015-03-31

申请号：US13946882

申请日：2013-07-19

Applicant: STMicroelectronics S.r.l.

Inventor： Luciano Prandi ,  Carlo Caminada ,  Ernesto Lasalandra

IPC: G01C19/00 ,  G01C23/00

CPC classification number: G01C23/005 ,  G01C19/5726 ,  G01C19/5762

Abstract: A microelectromechanical gyroscope having a microstructure that includes a first mass and a second mass, wherein the first mass is oscillatable according to a first axis and the second mass is constrained to the first mass so as to be drawn along by the first mass according to the first axis and to oscillate according to a second axis, in response to a rotation of the microstructure, a driving device coupled to the microstructure to maintain the first mass in oscillation at the driving frequency, and a reading device that detects displacements of the second mass according to the second axis. The gyroscope is provided with a self-test actuation system coupled to the second mass for applying an electrostatic force at the driving frequency so as to move the second mass according to the second axis.

Abstract translation: 具有包括第一质量和第二质量的微结构的微机电陀螺仪，其中所述第一质量可根据第一轴线振荡，并且所述第二质量块被约束为所述第一质量，以便根据所述第一质量块沿着所述第一质量块 第一轴线，并且响应于所述微结构的旋转而根据第二轴线振荡，耦合到所述微结构以将所述第一质量块保持在所述驱动频率处振荡的驱动装置;以及读取装置，其检测所述第二质量块的位移 根据第二轴。 陀螺仪设置有耦合到第二质量块的自检致动系统，用于在驱动频率处施加静电力，以便根据第二轴线移动第二质量块。

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：US20130249642A1

公开(公告)日：2013-09-26

申请号：US13904847

申请日：2013-05-29

Applicant: STMicroelectronics S.r.l.

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

IPC: H03B5/30

CPC classification number: H03B5/30 ,  G01C19/56 ,  H03L3/00

Abstract: A microelectromechanical device includes a body, a movable mass, elastically connected to the body and movable in accordance with a degree of freedom, and a driving device, coupled to the movable mass and configured to maintain the movable mass in oscillation at a steady working frequency in a normal operating mode. The microelectromechanical device moreover includes a start-up device, which is activatable in a start-up operating mode and is configured to compare a current oscillation frequency of a first signal correlated to oscillation of the movable mass with a reference frequency, and for deciding, on the basis of the comparison between the current oscillation frequency and the reference frequency, whether to supply to the movable mass a forcing signal packet so as to transfer energy to the movable mass.

Abstract translation: 微机电装置包括主体，可移动质量体，弹性地连接到主体并且可以根据自由度移动;以及驱动装置，其联接到可移动质量块，并且被配置为将可移动质量块稳定在稳定的工作频率 在正常的操作模式。 微机电装置还包括启动装置，其可以在启动操作模式下激活，并且被配置为将与可移动质量块的振荡相关的第一信号的当前振荡频率与参考频率进行比较， 基于当前振荡频率和参考频率之间的比较，是否向可移动质量块施加强制信号分组，以将能量传递到可移动质量块。

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。

公开(公告)号：US20130180331A1

公开(公告)日：2013-07-18

申请号：US13789496

申请日：2013-03-07

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Carlo Caminada ,  Luciano Prandi

IPC: G01C19/56

CPC classification number: G01C19/56 ,  G01C19/5712

Abstract: A multi-axis gyroscope includes a microelectromechanical structure configured to rotate with respective angular velocities about respective reference axes, and including detection elements, which are sensitive in respective detection directions and generate respective detection quantities as a function of projections of the angular velocities in the detection directions. The gyroscope including a reading circuit that generates electrical output signals, each correlated to a respective one of the angular velocities, as a function of the detection quantities. The reading circuit includes a combination stage that combines electrically with respect to one another electrical quantities correlated to detection quantities generated by detection elements sensitive to detection directions different from one another, so as to take into account a non-zero angle of inclination of the detection directions with respect to the reference axes.

Abstract translation: 多轴陀螺仪包括微机电结构，其被配置为围绕相应的参考轴线以相应的角速度旋转，并且包括在各个检测方向上敏感的检测元件，并且产生作为检测中的角速度的投影的函数的相应检测量 方向。 陀螺仪包括读取电路，其产生电输出信号，每个电流输出信号与各个角速度相关，作为检测量的函数。 读取电路包括组合级，其相对于彼此电连接的电量相关联，所述电量与对于彼此不同的检测方向敏感的检测元件产生的检测量相关联，以便考虑检测的非零倾斜角度 相对于参考轴的方向。