公开(公告)号：US5349261A

公开(公告)日：1994-09-20

申请号：US36723

申请日：1993-03-25

申请人： Katsumi Fujimoto ,  Kazuhiro Yoshitani ,  Akira Mori ,  Takeshi Nakamura

发明人： Katsumi Fujimoto ,  Kazuhiro Yoshitani ,  Akira Mori ,  Takeshi Nakamura

IPC分类号： G01C19/5663 ,  H01L41/08

CPC分类号： G01C19/5663

摘要： A vibrator 10 includes a regular triangular prism-shaped vibrating body 12. On centers of three side faces of the vibrating body 12, piezoelectric elements 14a, 14b and 14c are formed, respectively. Two piezoelectric elements and 14b are used for driving and detecting. The other piezoelectric element 14c is used for feedback. By trimming a ledge-line portion 12a of the vibrating body 12, a resonance frequency on driving side is controlled. By trimming ledge-line portions 12b and 12c of the vibrating body 12, two resonance frequencies on detecting side are controlled.

摘要翻译： 振动器10包括正三角形的棱柱形振动体12.在振动体12的三个侧面的中心分别形成压电元件14a，14b和14c。 两个压电元件和14b用于驱动和检测。 另一个压电元件14c用于反馈。 通过修整振动体12的凸缘部分12a，控制驱动侧的共振频率。 通过调整振动体12的凸缘部分12b和12c，控制检测侧的两个谐振频率。

公开(公告)号：US5479822A

公开(公告)日：1996-01-02

申请号：US135332

申请日：1993-10-13

申请人： Shozo Motohashi ,  Katsumi Fujimoto ,  Hiroshi Nishiyama ,  Yoshiaki Heinouchi ,  Kazuhiro Yoshitani ,  Yukio Sakashita

发明人： Shozo Motohashi ,  Katsumi Fujimoto ,  Hiroshi Nishiyama ,  Yoshiaki Heinouchi ,  Kazuhiro Yoshitani ,  Yukio Sakashita

IPC分类号： G01C19/56 ,  G01C19/5663 ,  G01P15/08 ,  G01P1/02

CPC分类号： G01C19/5663

摘要： A vibratory gyroscope 10 includes a vibrator 12. The vibrator 12 includes a regular triangular prism-shaped vibrating body 14. On centers of the three side faces of the vibrating body 14, piezoelectric elements 16a, 16b and 16c are formed respectively. The vibrating body 14 is supported above a base plate 20 by supporting members. The vibrating body 14 vibrates vertically with no rotation. A case 22 is secured so as to cover the vibrating body 14. An upper portion 26 of the case 22 is so formed that its inner size in the direction of the width is shorter than a half-wave length of a sound wave of a vibrating frequency of the vibrating body 14.

摘要翻译： 振动陀螺仪10包括振动器12.振动器12包括规则的三角形棱柱形振动体14.在振动体14的三个侧面的中心，形成压电元件16a，16b和16c。 振动体14通过支撑构件支撑在基板20的上方。 振动体14无旋转地垂直振动。 固定壳体22以覆盖振动体14.壳体22的上部26被形成为使得其在宽度方向上的内部尺寸比振动的声波的半波长短 振动体14的频率。

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：US5117148A

公开(公告)日：1992-05-26

申请号：US606286

申请日：1990-10-31

申请人： Takeshi Nakamura ,  Katsumi Fujimoto ,  Jiro Inoue

发明人： Takeshi Nakamura ,  Katsumi Fujimoto ,  Jiro Inoue

IPC分类号： B06B1/06 ,  G01C19/5663 ,  G01H1/10 ,  H01L41/09

CPC分类号： G01C19/5663 ,  B06B1/0644 ,  G01H1/10 ,  H01L41/0913 ,  H01L41/092

摘要： The vibrator includes a columnar vibrating body consisting of a piezoelectric material. The vibrating body is formed into a polygonal or cylindrical column and, when necessary, a through hole is formed axially thereof. Furthermore, the vibrating body is polarized. On side faces of the vibrating body, at least three external electrodes are formed. Also, when the through hole is to be formed, an internal electrode is formed on its inner circumferential surface. By applying the driving signal to these electrodes, the vibrating body bends and vibrates. And, when the rotational angular velocity is applied to the vibrating body about its axis, a coriolis force is produced responsive thereto. By this coriolis force, the vibrating direction of the vibrating body changes, and a voltage is produced between the two external electrodes. By measuring the voltage, the rotational angular velocity applied to the vibrator can be measured.

公开(公告)号：US5693998A

公开(公告)日：1997-12-02

申请号：US620787

申请日：1996-03-28

申请人： Katsumi Fujimoto ,  Takeshi Nakamura

发明人： Katsumi Fujimoto ,  Takeshi Nakamura

IPC分类号： G01C19/56 ,  G01C19/5642 ,  H01L41/08

CPC分类号： G01C19/5642

摘要： To provide a small-sized and highly sensitive oscillation gyroscope, an oscillation gyroscope 20 includes a first through a seventh piezoelectric substrate 24a through 24g, the first through the seventh piezoelectric substrates 24a through 24g are respectively polarized in the same direction and are integrally laminated, a first lead electrode 26a, a second lead electrode 26b, a first driving electrode 28a and a second driving electrode 28b are formed in the first and the second piezoelectric substrates 24a and 24b, the first lead electrode 26a is connected to the first driving electrode 28a and the second lead electrode 26b is connected to the second driving electrode 28b, first through fifth divided electrodes 32a1 through 32e1 and 32a2 through 32e2 are formed in the third through the seventh piezoelectric substrates 24c through 24g, first ones of the first through the fifth divided electrodes 32a1 through 32e1 are mutually connected to one another and also to a third lead electrode 26c and second ones of the first through the fifth divided electrodes 32a2 through 32e2 are mutually connected to one another and also to a fourth lead electrode 26d.

摘要翻译： 为了提供小型和高灵敏度的振荡陀螺仪，振荡陀螺仪20包括第一至第七压电基片24a至24g，第一至第七压电基片24a至24g分别沿相同方向极化并整体层压， 在第一和第二压电基板24a和24b中形成第一引线电极26a，第二引线电极26b，第一驱动电极28a和第二驱动电极28b，第一引线电极26a连接到第一驱动电极28a 并且第二引线电极26b连接到第二驱动电极28b，第一至第五分压电极32a1至32e1和32a2至32e2形成在第三至第七压电基板24c至24g中，第一至第五分压 电极32a1至32e1彼此相互连接并且还连接到第三引线电极 26c和第一至第五分隔电极32a2至32e2中的第二分隔电极彼此相互连接，并且还连接到第四引线电极26d。

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：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：US08604674B2

公开(公告)日：2013-12-10

申请号：US13310869

申请日：2011-12-05

申请人： Katsumi Fujimoto

发明人： Katsumi Fujimoto

IPC分类号： H01L41/08

CPC分类号： H01L41/1136 ,  H02N2/188

摘要： A piezoelectric power generator that includes a piezoelectric multilayer body including a piezoelectric element that converts vibration into electricity and a substrate on which the piezoelectric multilayer body is mounted. The resonant frequency of the piezoelectric element coincides with the reference of the substrate so that the piezoelectric element efficiently vibrates. The addition of vibration portions in the substrate allows various resonant frequencies to be set.

摘要翻译： 一种压电发电机，其特征在于，具有将振动变换为电的压电元件和安装有所述压电叠层体的基板的压电叠层体。 压电元件的谐振频率与基板的基准一致，使得压电元件有效地振动。 在衬底中添加振动部分允许设定各种谐振频率。

公开(公告)号：US08334638B2

公开(公告)日：2012-12-18

申请号：US12836822

申请日：2010-07-15

申请人： Katsumi Fujimoto ,  Tsuguji Kambayashi

发明人： Katsumi Fujimoto ,  Tsuguji Kambayashi

IPC分类号： H01L41/113

CPC分类号： H02N2/186 ,  H01L41/113

摘要： A small-sized piezoelectric power generation device is provided which can generate electric power even with vibrations at low frequencies. The piezoelectric power generation device includes a piezoelectric element formed in a spiral shape and having a center-side end fixed to a first fixing member and an outer-side end fixed to a second fixing member. The piezoelectric element includes a first piezoelectric body formed in a spiral shape and polarized in a radial direction of the piezoelectric element from one side toward the other side. The first and second fixing members are arranged such that the second fixing member is displaceable relative to the first fixing member in a tangential direction x, whereas the second fixing member is restricted from displacing relative to the first fixing member in a perpendicular direction y.

摘要翻译： 提供了一种小型的压电发电装置，其即使在低频下也能产生振动，也能产生电力。 压电发电装置包括形成为螺旋状的压电元件，其中央侧端部固定于第一固定部件，外侧端部固定于第二固定部件。 压电元件包括​​形成为螺旋形并且从一侧向另一侧在压电元件的径向方向上极化的第一压电体。 第一和第二固定构件被布置成使得第二固定构件能够相对于第一固定构件沿切线方向x移动，而第二固定构件被限制为相对于第一固定构件在垂直方向y上的位移。

公开(公告)号：US20110148256A1

公开(公告)日：2011-06-23

申请号：US13036353

申请日：2011-02-28

申请人： Katsumi Fujimoto

发明人： Katsumi Fujimoto

IPC分类号： H02N2/18

CPC分类号： H02N2/186 ,  H01L41/113

摘要： A piezoelectric power generator that includes a support body, a piezoelectric element, and a bias compressive stress applying member. The piezoelectric element is placed on the support body. The piezoelectric element has a piezoelectric plate that is polarized in the thickness direction, and first and second electrodes that are each provided on a surface of the piezoelectric plate. The bias compressive stress applying member is supported on the side above the piezoelectric element by the support body. The bias compressive stress applying member applies to the piezoelectric element a bias compressive stress acting in the thickness direction of the piezoelectric plate, so that the magnitude of a compressive stress in the piezoelectric plate changes with a change in externally applied stress.

摘要翻译： 一种压电发电机，包括支撑体，压电元件和偏压压应力构件。 压电元件放置在支撑体上。 压电元件具有在厚度方向上极化的压电板，以及设置在压电板的表面上的第一和第二电极。 偏压应力施加部件通过支撑体支撑在压电元件的上方。 偏置压应力施加部件在压电元件上施加沿压电板的厚度方向作用的偏压压缩应力，使得压电板中的压缩应力的大小随外部施加的应力的变化而变化。