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    • 73. 发明公开
    • Microelectromechanical gyroscope with position control driving and method for controlling a microelectromechanical gyroscope
    • Mikroelektromechanisches Gyroskop mit Positionssteuerungsantrieb und Verfahren zum Steuern eines mikroelektromechanischen Gyroskops
    • EP2259019A1
    • 2010-12-08
    • EP10164823.6
    • 2010-06-03
    • STMicroelectronics S.r.l.
    • Prandi, LucianoCaminada, Carlo
    • G01C19/56
    • G01C19/56G01C19/5726G01C19/5762H03F3/70
    • A MEMS gyroscope includes: a microstructure (2) having a fixed structure (6), a driving mass (7), movable with respect to the fixed structure (6) according to a driving axis (X), and a sensing mass (8), mechanically coupled to the driving mass (7) so as to be drawn in motion according to the driving axis (X) and movable with respect to the driving mass (7) according to a sensing axis (Y), in response to rotations of the microstructure (2); and a driving device (3), for keeping the driving mass (7) in oscillation with a driving frequency (ω D ). The driving device (3) includes a discrete-time sensing interface (20), for detecting a position (x) of the driving mass (7) with respect to the driving axis (X) and a control stage (21, 23, 24, 25) for controlling the driving frequency (ω D ) on the basis of the position (x) of the driving mass (7).
    • MEMS陀螺仪包括:具有固定结构(6)的微结构(2),可根据驱动轴线(X)相对于固定结构(6)移动的驱动质量块(7)和感测质量块(8) ),其根据所述驱动轴线(X)机械耦合到所述驱动质量块(7),并且根据感测轴线(Y)响应于旋转而相对于所述驱动质量块(7)可移动 的微观结构(2); 以及驱动装置(3),用于保持驱动质量(7)以驱动频率(ÉD)振荡。 驱动装置(3)包括离散时间传感接口(20),用于检测驱动质量块(7)相对于驱动轴线(X)的位置(x)和控制级(21,23,24 ,25),用于基于驱动质量块(7)的位置(x)来控制驱动频率(ÉD)。
    • 74. 发明公开
    • Systems and methods to overcome DC offsets in amplifiers used to start resonant micro-electro mechanical systems
    • 其用于谐振微型电动机械系统的起动在放大器克服德克·德利的系统和方法
    • EP2178208A2
    • 2010-04-21
    • EP09172605.9
    • 2009-10-08
    • Honeywell International Inc.
    • Suttor, Michael
    • H03H9/02H03F3/70H03K5/003
    • H03H9/02409G01C19/5776H03F3/70H03F2200/375H03K5/003
    • Systems and methods for insuring successful initiation of a resonating micro-electro mechanical systems (MEMS). An example system (20) includes a resonating sensor (24), a drive device (26), a charge amplifier, and a voltage gain circuit (28). At start up, the charge amplifier and voltage gain circuit receives signals from the resonating sensor, compensates this signal for DC offsets, and generates a clock signal for the drive, thus placing the resonating sensor in a steady state operating mode. The circuit includes a plurality of switches that are toggled to produce a glitch in the signal associated with the received signal. The glitch overcomes the DC offset. A comparator generates the clock signal for the drive device if a signal associated with the received signal exceeds a reference signal.
    • 系统和用于确保谐振微机电系统(MEMS)的成功启动方法。 的示例性系统(20)包括谐振传感器(24),驱动装置(26),一个电荷放大器和电压增益电路(28)。 在启动时,电荷放大器和电压增益电路从所述共振传感器的驱动器接收信号,该补偿信号对DC偏移,和基因率的时钟信号,从而将共振传感器在稳定状态的操作模式。 该电路包括开关的多元性没被切换以产生与接收到的信号相关联的信号中的假信号。 毛刺在谈到直流偏移。 如果与接收到的信号相关联的信号超过参考信号的比较基因我们获得了驱动装置的时钟信号。