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18 条记录 (耗时 0.03 秒)

    Vibration gyroscope
    11.
    发明授权
    Vibration gyroscope 失效
    振动陀螺仪

    公开(公告)号：US06209393B1

    公开(公告)日：2001-04-03

    申请号：US09091886

    申请日：1998-08-26

    申请人： Yoshiro Tomikawa ,  Kouichi Kanayama ,  Takeshi Koiso

    发明人： Yoshiro Tomikawa ,  Kouichi Kanayama ,  Takeshi Koiso

    IPC分类号： G01C1900

    CPC分类号： G01C19/5656

    摘要： A piezoelectric unit is composed of a plurality of piezoelectric elements. In one embodiment, a first driving electrode is provided over the whole surface of the lower surface of the piezoelectric element. A second driving electrode is provided over the whole surface between the piezoelectric elements. The driving electrodes are connected to a driving signal source. Detection electrodes are provided on the upper surface of the piezoelectric element. At least one of the detection electrodes is connected to one of the output terminals and at least another of the detection electrodes is connected to the other of the output electrodes. One piezoelectric element is polarized upward and another piezoelectric element is polarized downward. A vertical 1st order vibration is driven in a longitudinal direction and a 2nd order bending vibration is detected by the detection electrodes, and a voltage proportional to a coriolis force (rotational angular velocity) is outputted. With this construction, a vibration gyroscope having a reduced thickness and width can be produced.

    摘要翻译： 压电单元由多个压电元件构成。 在一个实施例中，第一驱动电极设置在压电元件的下表面的整个表面上。 第二驱动电极设置在压电元件之间的整个表面上。 驱动电极连接到驱动信号源。 检测电极设置在压电元件的上表面上。 至少一个检测电极连接到一个输出端子，并且至少另一个检测电极连接到另一个输出电极。 一个压电元件向上极化，另一个压电元件向下极化。 垂直一级振动沿长度方向驱动，并且由检测电极检测二阶弯曲振动，并输出与科里奥利力（旋转角速度）成比例的电压。 利用这种结构，可以制造具有减小的厚度和宽度的振动陀螺仪。

    Capacitive-component reducing circuit in electrostatic-type transducer means
    12.
    发明授权
    Capacitive-component reducing circuit in electrostatic-type transducer means 失效
    静电型传感器装置中的电容分量降低电路

    公开(公告)号：US5675296A

    公开(公告)日：1997-10-07

    申请号：US587196

    申请日：1996-01-11

    申请人： Yoshiro Tomikawa

    发明人： Yoshiro Tomikawa

    IPC分类号： G01P9/04 ,  G01C19/56 ,  G01R27/26 ,  H01L41/04 ,  H03H9/54 ,  H04R3/00 ,  H04R17/00 ,  H04R17/08 ,  H03B5/36 ,  H03L7/06

    CPC分类号： H04R3/00 ,  H01L41/042 ,  H03B5/36 ,  H03F3/187 ,  H03F2203/45136 ,  H04R17/00 ,  H04R17/08

    摘要： A drive voltage is supplied to a piezoelectric oscillator from an A.C. drive power source. Attached to an electrode of the piezoelectric oscillator is a loop circuit in which an amplifier having a (N+1) voltage amplification factor and an electrostatic capacitor are connected in series. When the electrostatic capacity is set to 1/N of a damping capacity of the piezoelectric oscillator, the current flowing through the damping capacity is replaced and shared by current from the electrostatic capacity, thus the drive current will not be consumed by the damping capacity. Therefore, a condition where the damping capacity is minimized depends on a capacity value of the electrostatic capacity and amplification factor of the amplifier only and does not depend on the frequency.

    摘要翻译： 驱动电压从交流驱动电源提供给压电振荡器。 连接到压电振荡器的电极的是具有（N + 1）个电压放大系数的放大器和静电电容器串联连接的环路电路。 当静电电容设定为压电振荡器的阻尼容量的1 / N时，流过阻尼容量的电流由静电电容的电流代替并共享，因此驱动电流不会被阻尼能力消耗。 因此，阻尼容量最小化的条件取决于放大器的静电容量的容量值和放大倍数，并且不依赖于频率。

    Driving apparatus for electrostatic converting means
    13.
    发明授权
    Driving apparatus for electrostatic converting means 失效
    用于静电转换装置的驱动装置

    公开(公告)号：US5712598A

    公开(公告)日：1998-01-27

    申请号：US578352

    申请日：1995-12-21

    申请人： Yoshiro Tomikawa

    发明人： Yoshiro Tomikawa

    IPC分类号： G01P9/04 ,  G01C19/56 ,  H01L41/04 ,  H03B5/32 ,  H04R9/18

    CPC分类号： H04R3/00 ,  H01L41/042 ,  H03B5/32 ,  H04R17/00 ,  H04R19/02

    摘要： A driving circuit and a Self-oscillating circuit incorporating a piezoelectric oscillator having one terminal connected to ground. In the driving circuit, an alternating driving power is supplied to a first terminal of the piezoelectric oscillator, and the second terminal of the piezoelectric oscillator is connected to ground. The damping capacitance of the piezoelectric oscillator is effectively canceled by connecting the first terminal to an input of an amplifier, and forming a feedback loop by connecting an output of the amplifier to the input through a electrostatic capacitance whose value is 1/N times the damping capacitance of the piezoelectric oscillator, where the amplifier has a gain of (N+1). In the self-oscillating circuit, a frequency selection circuit is provided which includes a positive feedback circuit connected between an output and a non-inverting input of an amplifier, and an electrostatic converter including a first terminal connected to the positive feedback circuit, and a second terminal connected to ground. The positive feedback circuit includes an electrostatic capacitance and a resistor selected such that a self-oscillation frequency of the self-oscillation circuit is determined by said frequency selection circuit.

    摘要翻译： 一种驱动电路和一个包含一个端子连接到地的压电振荡器的自振荡电路。 在驱动电路中，向压电振子的第一端子提供交流驱动电力，压电振荡器的第二端子接地。 通过将第一端子连接到放大器的输入端，压电振荡器的阻尼电容被有效地消除，并且通过将放大器的输出端连接到输入端并通过静电电容形成反馈回路，静电电容值为阻尼的1 / N倍 压电振荡器的电容，其中放大器的增益为（N + 1）。 在自振荡电路中，提供了一种频率选择电路，其包括连接在放大器的输出和非反相输入端之间的正反馈电路和包括连接到正反馈电路的第一端子的静电转换器，以及 第二端子接地。 正反馈电路包括静电电容和被选择的电阻，使得自振荡电路的自振频率由所述频率选择电路确定。

    Vibratory gyroscope
    14.
    发明授权
    Vibratory gyroscope 失效

    公开(公告)号：US5708320A

    公开(公告)日：1998-01-13

    申请号：US549616

    申请日：1995-10-27

    申请人： Kazumasa Ohnishi ,  Akira Satoh ,  Yoshiro Tomikawa

    发明人： Kazumasa Ohnishi ,  Akira Satoh ,  Yoshiro Tomikawa

    IPC分类号： G01C19/5607 ,  H01L41/08

    CPC分类号： G01C19/5607

    摘要： A vibratory gyroscope including an elongated vibrator having a central (neutral) axis (Y-axis), a drive unit for deforming the first direction such that the vibrator vibrates in a first (X) direction, an added mass attached to the vibrator at a position offset from the central axis in a second (Z) direction, and a detector formed on the vibrator. Rotation of the vibratory gyroscope about the second (Z) direction during vibration in the second direction causes Coriolis force to acting on the added mass in a direction parallel to the central axis. Because the added mass is offset from the central axis, a resulting vibration in the second (Z) direction is produced, which is detected by the detector. With this arrangement, the central axis of the vibrator is placed in parallel with the surface of rotation of the rotating system. Thus, rotations about two or three axes in each direction can be detected in such a manner that noise generation is prevented.

    Vibratory gyroscope
    15.
    发明授权
    Vibratory gyroscope 失效
    振动陀螺仪

    公开(公告)号：US5451828A

    公开(公告)日：1995-09-19

    申请号：US278776

    申请日：1994-07-22

    申请人： Yoshiro Tomikawa ,  Kazumasa Ohnishi

    发明人： Yoshiro Tomikawa ,  Kazumasa Ohnishi

    IPC分类号： G01C19/56 ,  G01P9/04 ,  H01L41/09 ,  H03H9/24 ,  H01L41/08

    CPC分类号： G01C19/5607

    摘要： A vibratory gyroscope, including a vibrator, which has three elastic arms separated by two slits, a driving means for generating vibration in at least one elastic arm, and a detecting means for detecting a component of vibration in a direction, which intersects with the direction of the vibration generated in an elastic arm due to Coriolis force when the vibrator rotates.

    摘要翻译： 一种振动陀螺仪，包括振动器，其具有由两个狭缝分开的三个弹性臂，用于在至少一个弹性臂中产生振动的驱动装置，以及检测装置，用于检测与方向相交的方向上的振动分量 当振动器旋转时由于科里奥利力而在弹性臂中产生的振动。

    Powder conveying device
    16.
    发明授权
    Powder conveying device 失效
    粉末输送装置

    公开(公告)号：US5414497A

    公开(公告)日：1995-05-09

    申请号：US122287

    申请日：1993-10-21

    申请人： Hiroaki Tsuchiya ,  Keishi Ohsawa ,  Yuji Sakemi ,  Kenichiro Waki ,  Nobuyuki Ito ,  Takehiro Takano ,  Yoshiro Tomikawa

    发明人： Hiroaki Tsuchiya ,  Keishi Ohsawa ,  Yuji Sakemi ,  Kenichiro Waki ,  Nobuyuki Ito ,  Takehiro Takano ,  Yoshiro Tomikawa

    IPC分类号： G03G15/08 ,  G03G15/09

    CPC分类号： G03G15/0822 ,  G03G15/08 ,  G03G15/09

    摘要： A developing apparatus includes a guide member for guiding toner toward an image bearing member bearing an electrostatic image thereon, the guide member having a first end and a second end, a vibration generating device for applying an ultrasonic oscillation to the guide member proximate one of the first end and the second end of the guide member, and a vibration absorbing device for absorbing the ultrasonic oscillation in the guide member at the other one of the first end and the second end, wherein toner is conveyed on the guide member in a direction from the absorbing device to the vibration applying device. In one aspect, the toner is a magnetic toner, and a magnetic field is generated on the guide member at a position opposite a surface for guiding the toner.

    摘要翻译： 显影装置包括用于将调色剂引导到其上承载有静电图像的图像承载部件的引导部件，所述引导部件具有第一端部和第二端部，振动产生装置，用于将超声波振动施加到导向部件 引导构件的第一端和第二端，以及用于吸收在第一端和第二端中的另一端处的引导构件中的超声波振动的振动吸收装置，其中调色剂在引导构件上沿从 吸收装置到振动施加装置。 在一个方面，调色剂是磁性调色剂，并且在引导构件上在与用于引导调色剂的表面相对的位置处产生磁场。