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    • 2. 发明授权
    • Physical quantity sensor
    • 物理量传感器
    • US09476897B2
    • 2016-10-25
    • US14401627
    • 2013-05-28
    • DENSO CORPORATION
    • Tomoya JomoriYoichi Mochida
    • G01P15/00G01P1/00G01C19/5747G01P1/02G01P3/14G01P3/44
    • G01P1/003G01C19/5747G01P1/026G01P3/14G01P3/44
    • A physical quantity sensor has a resonance frequency f1 in same-phase mode and a resonance frequency f3 in same-phase absorptive mode greater than the resonance frequency f1. An absolute value Δf3 is a difference between the resonance frequency f3 in the same-phase absorptive mode and a value that is the product of the resonance frequency f1 in the same-phase mode multiplied by n; an avoidance difference D indicates a degree of deviation of the absolute value Δf3 from the resonance frequency f1 in the same-phase mode. A relation (Δf3>n·f1·D) is satisfied, and, simultaneously, the avoidance difference D is provided to be greater than 0%. This can avoid the vibrational excitation by resonance interference from becoming the maximum displacement.
    • 物理量传感器具有同相模式的谐振频率f1和大于谐振频率f1的同相吸收模式的谐振频率f3。 绝对值Δf3是同相吸收模式中的谐振频率f3与作为同相模式的谐振频率f1乘以n的乘积的值之差; 避免差D表示在同相模式下绝对值Δf3与谐振频率f1的偏差度。 满足关系(Δf3> n·f1·D),并且同时将回避差D设定为大于0%。 这可以避免谐振干扰的振动激励成为最大位移。
    • 4. 发明授权
    • Sensor
    • 传感器
    • US09176158B2
    • 2015-11-03
    • US13580616
    • 2011-03-03
    • Kevin TownsendMichael DurstonDouglas Robert Sitch
    • Kevin TownsendMichael DurstonDouglas Robert Sitch
    • G01C19/56G01P3/14G01C19/5684
    • G01P3/14G01C19/5684
    • An inertial sensor is described that has a commanded test function. The sensor is of a ring type driven by a driver circuit, the sensor further includes primary and secondary portions having corresponding signal pickoffs. The primary pickoff signal amplitude is controlled via an automatic gain control, the primary phase lock loop and VCO locks to the resonant frequency to provide the clocks for the synchronous detectors, the primary pickoff signals via the primary phase shift circuit is provided to the primary driver, the secondary pickoff signal being input into a detector circuit capable of detecting motion in the sensor. The commanded test function includes a signal derived from the primary portion of the circuit and input into the two inputs of a differential amplifier in the secondary pickoff detector circuit.
    • 描述了具有指令测试功能的惯性传感器。 该传感器是由驱动电路驱动的环型,该传感器还包括具有相应信号检测的主要和次要部分。 通过自动增益控制来控制主要的检测信号幅度,主锁相环和VCO锁定到谐振频率以提供同步检波器的时钟,通过主相移电路的初级检测信号被提供给主驱动器 ,次级检测信号被输入到能够检测传感器中的运动的检测器电路。 命令测试功能包括从电路的主要部分导出并输入到次级检测电路中的差分放大器的两个输入的信号。