公开(公告)号：US06634230B2

公开(公告)日：2003-10-21

申请号：US10124418

申请日：2002-04-18

申请人： Isao Toyoshima ,  Akira Mori ,  Nobuyuki Ishitoko ,  Takayuki Shimamoto ,  Akira Kumada ,  Iku Nagai

发明人： Isao Toyoshima ,  Akira Mori ,  Nobuyuki Ishitoko ,  Takayuki Shimamoto ,  Akira Kumada ,  Iku Nagai

IPC分类号： G01C1900

CPC分类号： G01C19/5642

摘要： A vibrating gyroscope includes supporting members which are fixed in the vicinity of two node axes n1 and n2 of a bar-shaped vibrator. The supporting members corresponding to node axis n1 extend from the locations at which they are fixed to the vibrator in the widthwise direction of the vibrator, and also include bending portions and a proximity portion. The bending portions bend toward node axis n1. At the proximity portion, the supporting members are in close proximity with each other with a gap therebetween in the vicinity of node axis n1.

公开(公告)号：US06722622B2

公开(公告)日：2004-04-20

申请号：US10083850

申请日：2002-02-26

申请人： Akira Mori ,  Nobuyuki Ishitoko

发明人： Akira Mori ,  Nobuyuki Ishitoko

IPC分类号： G01C1900

CPC分类号： G01C19/5663 ,  H01L41/053

摘要： A compact vibrator support structure has a very high “vibration confinement effect”, and includes a vibrator, vibrator support members, and a vibrator base, which supports the vibrator in midair via the vibrator support members and is made of a material having a specific gravity of about 3.0 or above. Since the high vibration confinement effect of the vibrator support structure reduces leakage of vibration from the vibrator base, the stability of the vibration of the vibrator is greatly improved, thereby increasing the detecting accuracy of angular velocity. This eliminates the need to enlarge the vibrator base or to adhere a weight thereto, resulting in a miniaturized vibrating gyroscope.

摘要翻译： 紧凑型振动器支撑结构具有非常高的“振动限制效应”，并且包括振动器，振动器支撑构件和振动器基座，其通过振动器支撑构件在空中支撑振动器，并且由具有比重的材料制成 约3.0或更高。 由于振动器支撑结构的高振动限制效应减少了振动基座的振动泄漏，所以振动器振动的稳定性大大提高，从而提高角速度的检测精度。 这样就不需要放大振动器底座或将重物附着在其上，从而产生一个小型化的振动陀螺仪。

公开(公告)号：US07353705B2

公开(公告)日：2008-04-08

申请号：US11682990

申请日：2007-03-07

申请人： Akira Mori ,  Iku Nagai ,  Kazushige Sawada ,  Makoto Narita

发明人： Akira Mori ,  Iku Nagai ,  Kazushige Sawada ,  Makoto Narita

IPC分类号： G01P9/04 ,  G01P19/56

CPC分类号： G01C19/5776

摘要： The oscillation type inertial force sensor includes an oscillator arranged to detect an inertial force, an oscillation circuit unit arranged to drive the oscillator, and a signal processing circuit unit arranged to generate a signal according to the magnitude of the inertial force on the basis of a detection output of the oscillator, and further includes a holding arranged to hold a processed signal in the signal processing circuit unit at a predetermined potential during a period immediately after power-on until operation of the oscillation circuit unit becomes stable in response to power-on.

摘要翻译： 振荡型惯性力传感器包括：检测惯性力的振荡器;驱动振荡器的振荡电路单元;以及信号处理电路单元，被配置为根据惯性力的大小生成信号 振荡器的检测输出，并且还包括保持器，其布置成在紧接着上电之后的周期期间将信号处理电路单元中的处理信号保持在预定电位，直到振荡电路单元的操作响应于上电而变得稳定 。

公开(公告)号：US06822375B2

公开(公告)日：2004-11-23

申请号：US09792193

申请日：2001-02-22

申请人： Akira Mori ,  Isao Toyoshima

发明人： Akira Mori ,  Isao Toyoshima

IPC分类号： H01L4106

CPC分类号： G01C19/5663

摘要： A vibrating gyroscope includes a vibrator having a longitudinal direction and being capable of vibrating in a bending mode in a bending direction perpendicular to the longitudinal direction. The vibrator has first and second nodes which elongate in a direction perpendicular to both the bending direction and the longitudinal direction and first, second, third and fourth supporting members connected to the vibrator such that the first node is interposed between the first and second supporting members and the second node is interposed between the third and fourth supporting members. The first node is located at the vicinity of either the first supporting member or the second supporting member, and the second node is located at the vicinity of either the third supporting member or the fourth supporting member.

摘要翻译： 振动陀螺仪包括具有纵向并能够在垂直于纵向的弯曲方向上以弯曲模式振动的振动器。 振动器具有沿与弯曲方向和长度方向垂直的方向延伸的第一和第二节点以及连接到振动器的第一，第二，第三和第四支撑构件，使得第一节点介于第一和第二支撑构件之间 并且第二节点插入在第三和第四支撑构件之间。 第一节点位于第一支撑构件或第二支撑构件的附近，并且第二节点位于第三支撑构件或第四支撑构件的附近。

公开(公告)号：US06666090B2

公开(公告)日：2003-12-23

申请号：US09888678

申请日：2001-06-25

申请人： Akira Mori ,  Akira Kumada ,  Kazuhiro Ebara

发明人： Akira Mori ,  Akira Kumada ,  Kazuhiro Ebara

IPC分类号： G01C1900

CPC分类号： G01C19/5649

摘要： A vibrating gyroscope includes a vibrator having a driving electrode and a sensor electrode, a driving circuit for applying a driving voltage to the driving electrode, a detection circuit which receives, from the sensor electrode, a signal corresponding to a bending displacement of the vibrator, a signal processing circuit for processing a signal input from the detection circuit to detect an angular velocity, a power supply circuit, and a diagnostic circuit for examining whether or not the detection circuit, the driving circuit, the signal processing circuit, and the power supply circuit are all functioning normally.

公开(公告)号：US6035713A

公开(公告)日：2000-03-14

申请号：US146885

申请日：1998-09-03

申请人： Akira Mori ,  Akira Kumada ,  Yoshio Kawai

发明人： Akira Mori ,  Akira Kumada ,  Yoshio Kawai

IPC分类号： G01C19/56 ,  G01C19/5642 ,  G01C19/00

CPC分类号： G01C19/5663

摘要： A vibrating gyroscope includes a bar-shaped vibrator and a support member. The bar-shaped vibrator includes a drive element for vibrating the bar-shaped vibrator and a detection element for detecting the vibration of the bar-shaped vibrator. The bar-shaped vibrator has two grooves therein which extend along a direction perpendicular to a longitudinal direction of the bar-shaped vibrator in the vicinity of two node points of the vibration of the bar-shaped vibrator, respectively. The support member has a shape in which two arch portions held in a non-horizontal direction are connected by two connecting portions at both ends of the arch portions. The arch portions of the support member are connected to the bar-shaped vibrator at respective bottoms of the grooves thereof.

摘要翻译： 振动陀螺仪包括杆形振动器和支撑构件。 棒状振动器包括用于振动棒状振动器的驱动元件和用于检测棒状振动器的振动的检测元件。 棒形振动器具有两个凹槽，其中分别在棒形振动器的振动的两个节点附近沿垂直于杆形振动器的纵向的方向延伸。 支撑构件具有两个拱形部分保持在非水平方向上的两个连接部分在拱形部分的两端连接的形状。 支撑构件的拱形部分在其凹槽的各个底部处连接到棒状振动器。

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：US5902931A

公开(公告)日：1999-05-11

申请号：US840030

申请日：1997-04-24

申请人： Akira Mori ,  Akira Kumada

发明人： Akira Mori ,  Akira Kumada

IPC分类号： G01C19/5649 ,  G01P9/04

CPC分类号： G01C19/5649

摘要： A vibration gyroscope which is capable of accurately detecting a rotational angular velocity regardless of environmental changes or changes in vibrator characteristics includes a vibrator formed of a vibration element, and first and second piezoelectric elements for detection and a third piezoelectric element for driving. Output currents of the first and second piezoelectric elements are converted into voltages by I-V conversion circuits, or output voltages of the first and second piezoelectric elements are detected by voltage detection circuits, and then the voltages are added together by an adder circuit. An output signal of the adder circuit is monitored by a monitor circuit. On the basis of this result, the voltage or the phase of a drive signal fed from an oscillation circuit to the third piezoelectric element is controlled. The output signals of the I-V conversion circuits or the output signals of the voltage detection circuits are formed into a DC signal corresponding to a rotational angular velocity via a differential amplifier circuit, a synchronization detection circuit, a smoothing circuit, and an amplifier circuit.

摘要翻译： 能够精确地检测旋转角速度而不管环境变化或振动器特性的变化的振动陀螺仪包括由振动元件形成的振动器，用于检测的第一和第二压电元件和用于驱动的​​第三压电元件。 第一和第二压电元件的输出电流由I-V转换电路转换成电压，或者由电压检测电路检测第一和第二压电元件的输出电压，然后通过加法器电路将电压相加在一起。 加法器电路的输出信号由监视电路监视。 基于该结果，控制从振荡电路向第三压电元件供给的驱动信号的电压或相位。 I-V转换电路的输出信号或电压检测电路的输出信号通过差分放大电路，同步检测电路，平滑电路和放大电路形成为与旋转角速度对应的直流信号。

公开(公告)号：US6029516A

公开(公告)日：2000-02-29

申请号：US159716

申请日：1998-09-24

申请人： Akira Mori ,  Akira Kumada

发明人： Akira Mori ,  Akira Kumada

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01P21/00 ,  G01P3/00

CPC分类号： G01C19/5642

摘要： A vibrating gyroscope includes: a column-shaped vibrating body; driving elements formed on side-faces of the vibrating body, for exciting a bending vibration in the vibrating body; detection elements formed on side-faces of the vibrating body, for detecting changes in the bending vibration of the vibrating body; pseudo-Coriolis force generating elements formed on side-faces of the vibrating body, for applying a force to the vibrating body in the same direction as that of a Coriolis force generated when a rotational angular velocity is produced about the vibrating body; and a pseudo-Coriolis signal generating circuit for supplying the pseudo-Coriolis force generating elements with a pseudo-Coriolis signal to apply a force in the same direction as that of the Coriolis force to the vibrating body.

摘要翻译： 振动陀螺仪包括：柱状振动体; 形成在振动体的侧面上的驱动元件，用于激发振动体中的弯曲振动; 检测元件形成在振动体的侧面上，用于检测振动体的弯曲振动的变化; 形成在振动体的侧面上的假科里奥利力产生元件，用于沿与振动体周围产生旋转角速度时产生的科里奥利力相同的方向向振动体施加力; 以及伪科里奥利信号发生电路，用于向伪科里奥利力产生元件提供伪科里奥利信号，以将与科里奥利力相同方向的力施加到振动体。

公开(公告)号：US09003884B2

公开(公告)日：2015-04-14

申请号：US13569209

申请日：2012-08-08

申请人： Yoshitaka Kato ,  Akira Mori ,  Makoto Narita ,  Yoshihiko Koizumi

发明人： Yoshitaka Kato ,  Akira Mori ,  Makoto Narita ,  Yoshihiko Koizumi

IPC分类号： G01C19/56 ,  G01C19/5776

CPC分类号： G01C19/5776

摘要： An oscillation type inertia force sensor includes an oscillator, an oscillation circuit unit, and a detection circuit unit. The oscillation circuit unit functions as a self oscillation circuit of a closed loop with the oscillator as a resonant element, and includes an AGC circuit. The AGC circuit includes a VGA circuit, a comparison circuit comparing a predetermined reference voltage with a voltage of the monitor signal to output a control signal based on the compared result, and a pulse width modulation circuit modulating the control signal to a pulse width modulation signal. Based on the pulse width modulation signal, the driving signal is modulated with the output of the VGA circuit switched between an ON state and OFF state to control the degree of the amplification factor of the VGA circuit.

摘要翻译： 振荡型惯性力传感器包括振荡器，振荡电路单元和检测电路单元。 振荡电路单元用作振荡器作为谐振元件的闭环的自振荡电路，并且包括AGC电路。 AGC电路包括VGA电路，将预定参考电压与监视信号的电压进行比较的比较电路，基于比较结果输出控制信号;以及脉宽调制电路，将控制信号调制为脉宽调制信号 。 基于脉宽调制信号，驱动信号被调制，VGA电路的输出在ON状态和OFF状态之间切换，以控制VGA电路的放大系数的程度。