公开(公告)号：US5635786A

公开(公告)日：1997-06-03

申请号：US455717

申请日：1995-05-31

申请人： Katsumi Fujimoto ,  Takeshi Nakamura ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

发明人： Katsumi Fujimoto ,  Takeshi Nakamura ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01C19/5663 ,  H01L41/08

CPC分类号： G01C19/5642

摘要： A vibrating gyroscope 10 includes a regular quadrangular prism-shaped vibrator 12. The vibrator 12 includes, a first piezoelectric base plate 14a and a second piezoelectric base plate 14b, which are polarized reversely each other in a direction of thickness. On a main surface of the first piezoelectric base plate 14a, two divided electrodes 16, 16 are formed in laterally spaced relationship. On a main surface of the second piezoelectric base plate 14b, a common electrode 18 is formed. Between the first piezoelectric base plate 14a and the second piezoelectric base plate 14b, a dummy electrode 20 is formed. One output terminal of an oscillation circuit 30 as a driving means is connected to the two divided electrodes 16, 16 of the vibrator 12, via resistors 32a and 32b. Another output terminal of the oscillation circuit 30 is connected to the common electrode 18 of the vibrator 12. The two divided electrodes 16, 16 of the vibrator 12 are respectively connected to a non-inverting input terminal and an inverting input terminal of a differential amplifier circuit 36 as a detecting means, via resistors 34a and 34b.

摘要翻译： 振动陀螺仪10包括规则的四边形棱柱形振动器12.振动器12包括在厚度方向上彼此反向偏振的第一压电基板14a和第二压电基板14b。 在第一压电基板14a的主表面上，以横向间隔的关系形成两个分开的电极16,16。 在第二压电基板14b的主表面上形成公共电极18。 在第一压电基板14a和第二压电基板14b之间形成有虚拟电极20。 作为驱动装置的振荡电路30的一个输出端子经由电阻器32a和32b连接到振动器12的两个分割电极16,16。 振荡电路30的另一个输出端子连接到振动器12的公共电极18.振动器12的两个分开的电极16,16分别连接到差分放大器的非反相输入端子和反相输入端子 电路36作为检测装置，通过电阻34a和34b。

公开(公告)号：US5677486A

公开(公告)日：1997-10-14

申请号：US556714

申请日：1995-11-13

申请人： Takeshi Nakamura ,  Katsumi Fujimoto ,  Kazuhiro Ebara

发明人： Takeshi Nakamura ,  Katsumi Fujimoto ,  Kazuhiro Ebara

IPC分类号： G01C19/5649 ,  G01C19/00

CPC分类号： G01C19/5649

摘要： An oscillation gyroscope 10 includes an oscillator 11 comprising an equilateral triangular prism-shaped vibrating body 12 and piezoelectric elements 14a to 14c. An oscillator circuit 26 including an inverse amplification circuit 28 and a phase circuit 30 is connected between the piezoelectric elements 14a, 14b and the piezoelectric element 14c via resistors 22 and 24. The piezoelectric elements 14a and 14b are connected to a differential amplification circuit 32 and the output signal of a addition signal computing unit 34 is added to the output signal of the differential amplification circuit 32 by an adder 33. A signal of the same phase or an inverse phase with respect to the output signal of the phase circuit 30 or an inverse amplification circuit 28 is level-adjusted and outputted from the addition signal computing unit 34. A composite signal made up of the output signal of the differential amplification circuit 32 and the output signal of the addition signal computing unit 34 is detected by a synchronous detector 36 and smoothed by a smoothing circuit 38.

摘要翻译： 振荡陀螺仪10包括振荡器11，该振荡器11包括等边三角棱柱形振动体12和压电元件14a至14c。 包括反相放大电路28和相位电路30的振荡器电路26通过电阻器22和24连接在压电元件14a，14b和压电元件14c之间。压电元件14a和14b连接到差动放大电路32和 相加信号计算单元34的输出信号通过加法器33被加到差分放大电路32的输出信号上。相对于相电路30的输出信号或相位电路30的输出信号相同或相位相反的信号 由反相放大电路28进行电平调整并从加法运算部34输出。由差分放大电路32的输出信号和加法运算部34的输出信号构成的复合信号由同步检波器 并且由平滑电路38平滑化。

公开(公告)号：US6158281A

公开(公告)日：2000-12-12

申请号：US728847

申请日：1996-10-10

申请人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Hiroshi Nishiyama ,  Takeshi Nakamura

发明人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Hiroshi Nishiyama ,  Takeshi Nakamura

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01P9/04

CPC分类号： G01C19/5649

摘要： A vibration gyroscope 10 includes a vibrator 12. The vibrator 12 has a vibration member 14 formed in a regular triangular prism shape. On side faces of the vibration member 14, piezoelectric elements 16a, 16b and 16c are formed. Two of the piezoelectric elements 16a and 16b are connected to resistors 26 and 28, respectively. Between the other feedback piezoelectric element 16c and these resistors, an oscillation circuit 30 is connected. A signal having a phase opposite to that of the signal output from the feedback piezoelectric element 16c is input to the vibration member 14 serving as a grounding terminal by a phase inverter 34. The signals output from the two piezoelectric elements 16a and 16b are input to a differential circuit 36. The differential circuit 36 is connected to a synchronous detection circuit 38 and connected to a smoothing circuit 40 and a DC amplifier 42 in series.

摘要翻译： 振动陀螺仪10包括振动器12.振动器12具有以正三角形棱柱形状形成的振动部件14。 在振动部件14的侧面形成压电元件16a，16b，16c。 两个压电元件16a和16b分别连接到电阻器26和28。 在另一反馈压电元件16c与这些电阻之间，连接振荡电路30。 具有与从反馈压电元件16c输出的信号相反的相位的信号通过相位逆变器34输入到用作接地端子的振动部件14.由两个压电元件16a和16b输出的信号被输入到 差分电路36.差分电路36连接到同步检测电路38并串联连接到平滑电路40和DC放大器42。

公开(公告)号：US6058777A

公开(公告)日：2000-05-09

申请号：US26388

申请日：1998-02-19

申请人： Katsumi Fujimoto ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

发明人： Katsumi Fujimoto ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01P9/00 ,  H01L41/08

CPC分类号： G01C19/5642

摘要： A vibrating gyroscope includes a vibrating unit and a driving unit for driving the vibrating unit. The vibrating unit includes at least a pair of piezoelectric bodies stacked and polarized in a stacked direction thereof such that polarizing directions of the piezoelectric bodies are opposed to each other. An interface between the piezoelectric bodies is electrically floating with respect to a reference potential. The driving circuit receives at least one feedback signal from the vibrating unit and outputs to the vibrating unit a driving signal which has substantially the same phase as the feedback signal.

摘要翻译： 振动陀螺仪包括振动单元和用于驱动振动单元的驱动单元。 所述振动单元包括至少一对压电体，所述至少一对压电体在其堆叠方向上堆叠并极化，使得所述压电体的偏振方向彼此相对。 压电体之间的界面相对于参考电位电浮动。 驱动电路从振动单元接收至少一个反馈信号，并向振动单元输出与反馈信号基本相同的驱动信号。

公开(公告)号：US5850119A

公开(公告)日：1998-12-15

申请号：US730091

申请日：1996-10-15

申请人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Hiroshi Nishiyama

发明人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Hiroshi Nishiyama

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

CPC分类号： G01C19/5642

摘要： A vibration gyroscope 10 includes a vibrator 12. The vibrator 12 has a vibration member 14 formed in a regular triangular prism shape and piezoelectric elements 16a, 16b and 16c. Two of the piezoelectric elements 16a and 16b are polarized in the direction from the outside to the vibration member 14, and the other piezoelectric element 16c is polarized in the direction from the vibration member 14 to the outside. An oscillation circuit 28 sends signals to the piezoelectric elements 16a to 16c and a signal output from the vibration member 14 is fed back. Two of the piezoelectric elements 16a and 16b are connected to a differential circuit 30. The differential circuit 30 is connected to a synchronous detection circuit 32 and then connected to a smoothing circuit 34 and a DC amplifier 36 in series.

摘要翻译： 振动陀螺仪10包括振动器12.振动器12具有形成为三角形棱镜形状的振动部件14和压电元件16a，16b，16c。 两个压电元件16a和16b在从外部到振动元件14的方向上被偏振，另一个压电元件16c在从振动元件14到外部的方向上偏振。 振荡电路28向压电元件16a〜16c发送信号，反馈从振动部件14输出的信号。 两个压电元件16a和16b连接到差分电路30.差分电路30连接到同步检测电路32，然后串联连接到平滑电路34和DC放大器36。

公开(公告)号：US5824899A

公开(公告)日：1998-10-20

申请号：US798989

申请日：1997-02-11

申请人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Shiro Makino

发明人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Shiro Makino

IPC分类号： G01C19/5649 ,  G01C19/00

CPC分类号： G01C19/5649

摘要： A vibrating gyroscope includes a vibrator having a triangular prism shaped vibrating body and piezoelectric elements. An oscillation circuit is connected between two piezoelectric elements and another piezoelectric element. Output signals from two piezoelectric elements are applied to input terminals of a differential circuit. The differential circuit is connected to a synchronous detecting circuit, and the synchronous detecting circuit is connected to a smoothing circuit. A temperature compensating capacitor is connected between two piezoelectric elements that are connected to the differential circuit. The oscillation circuit consists of an amplifier and a phase shifter having a resistor and a capacitor. As the capacitor used in the phase shifter, the temperature compensating capacitor may be used.

摘要翻译： 振动陀螺仪包括具有三角形棱柱形振动体和压电元件的振动器。 振荡电路连接在两个压电元件和另一个压电元件之间。 来自两个压电元件的输出信号被施加到差分电路的输入端。 差分电路连接到同步检测电路，同步检测电路连接到平滑电路。 温度补偿电容器连接在与差分电路连接的两个压电元件之间。 振荡电路由放大器和具有电阻器和电容器的移相器组成。 作为移相器中使用的电容器，可以使用温度补偿电容器。

公开(公告)号：US5962785A

公开(公告)日：1999-10-05

申请号：US874672

申请日：1997-06-13

申请人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Shiro Makino

发明人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Shiro Makino

IPC分类号： G01C19/5649 ,  G01C19/00

CPC分类号： G01C19/5649

摘要： A vibrating gyroscope includes a vibrator having a triangular prism shaped vibrating body and piezoelectric elements. An oscillation circuit is connected between two piezoelectric elements and another piezoelectric element. Output signals from two piezoelectric elements are applied to input terminals of a differential circuit. The differential circuit is connected to a synchronous detecting circuit, and the synchronous detecting circuit is connected to a smoothing circuit. A temperature compensating capacitor is connected between two piezoelectric elements that are connected to the differential circuit. The oscillation circuit consists of an amplifier and a phase shifter having a resistor and a capacitor. As the capacitor used in the phase shifter, the temperature compensating capacitor may be used.

摘要翻译： 振动陀螺仪包括具有三角形棱柱形振动体和压电元件的振动器。 振荡电路连接在两个压电元件和另一个压电元件之间。 来自两个压电元件的输出信号被施加到差分电路的输入端。 差分电路连接到同步检测电路，同步检测电路连接到平滑电路。 温度补偿电容器连接在与差分电路连接的两个压电元件之间。 振荡电路由放大器和具有电阻器和电容器的移相器组成。 作为移相器中使用的电容器，可以使用温度补偿电容器。

公开(公告)号：US5922954A

公开(公告)日：1999-07-13

申请号：US754704

申请日：1996-11-21

申请人： Kazuhiro Ebara ,  Katsumi Fujimoto

发明人： Kazuhiro Ebara ,  Katsumi Fujimoto

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01C19/00

CPC分类号： G01C19/5649

摘要： A vibration gyroscope includes a vibrator. The vibrator has a vibration member formed in a regular triangular prism shape. On side faces of the vibration member, three piezoelectric elements are formed, respectively. Two of the piezoelectric elements are connected to the input terminal of an oscillation circuit through resistors which serve as the loads of the two piezoelectric elements, respectively. The output terminal of the oscillation circuit is connected to the other piezoelectric element. The former piezoelectric elements are also connected to the non-inverting input terminal and the inverting input terminal of a differential amplifier circuit, respectively. By changing the impedances of the resistors, the characteristics of the vibration gyroscope is adjusted.

摘要翻译： 振动陀螺仪包括振动器。 振动器具有形成为正三角形棱柱形状的振动部件。 在振动部件的侧面分别形成三个压电元件。 两个压电元件通过分别作为两个压电元件的负载的电阻连接到振荡电路的输入端。 振荡电路的输出端子连接到另一个压电元件。 以前的压电元件也分别连接到差分放大器电路的非反相输入端子和反相输入端子。 通过改变电阻的阻抗，调整振动陀螺仪的特性。

公开(公告)号：US06588274B1

公开(公告)日：2003-07-08

申请号：US09697412

申请日：2000-10-26

申请人： Akira Kumada ,  Akira Mori ,  Kazuhiro Ebara

发明人： Akira Kumada ,  Akira Mori ,  Kazuhiro Ebara

IPC分类号： G01P900

CPC分类号： G01C19/56

摘要： A self-diagnosing circuit for a vibrating gyroscope for detecting a vibration due to a Coriolis force including a differential operating circuit for determining a difference between output signals outputted from a plurality of detecting electrodes which provided on the vibrator to detect the vibration due to the Coriolis force; and an offset signal source for superposing an offset signal on at least one of the signals outputted from said plurality of detecting electrodes such that the signals are offset with different signal levels.

摘要翻译： 一种用于检测由科里奥利力引起的振动的振动陀螺仪的自诊断电路，包括用于确定从设置在振动器上的多个检测电极输出的输出信号之间的差异的差分运算电路，以检测由科里奥利引起的振动 力; 以及偏移信号源，用于在从所述多个检测电极输出的至少一个信号上叠加偏移信号，使得信号以不同的信号电平偏移。

公开(公告)号：US06608425B2

公开(公告)日：2003-08-19

申请号：US10050924

申请日：2002-01-22

申请人： Kazuhiro Ebara ,  Akira Kumada ,  Hiroyuki Hirano

发明人： Kazuhiro Ebara ,  Akira Kumada ,  Hiroyuki Hirano

IPC分类号： H01L4108

CPC分类号： G01C19/5642

摘要： A vibrating gyroscope includes a piezoelectric vibrator and a plurality of detection load-impedance elements. The resistance of one of the detection load-impedance elements is changed by a switch so that the resistance is different from that of the other one of the detection load-impedance elements, thereby making difference between the amplitude of signals input from two detection electrodes to a differential circuit and detecting the variation in a Coriolis signal. Accordingly, a self-diagnosis for the vibrating gyroscope, for example, a diagnosis of a short circuit in the detection electrodes of the vibrator can be performed.