JPS61191916A - Transverse vibration sound piece gyroscope - Google Patents

Transverse vibration sound piece gyroscope

Info

Publication number
JPS61191916A
JPS61191916A JP60031964A JP3196485A JPS61191916A JP S61191916 A JPS61191916 A JP S61191916A JP 60031964 A JP60031964 A JP 60031964A JP 3196485 A JP3196485 A JP 3196485A JP S61191916 A JPS61191916 A JP S61191916A
Authority
JP
Japan
Prior art keywords
ceramics
extraction
bonded
piezo
vibrating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP60031964A
Other languages
Japanese (ja)
Inventor
Tadashi Konno
近野　正
Hiroaki Yamada
博章 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP60031964A priority Critical patent/JPS61191916A/en
Publication of JPS61191916A publication Critical patent/JPS61191916A/en
Pending legal-status Critical Current

Links

Landscapes

  • Gyroscopes (AREA)

Abstract

PURPOSE:To enable accurate detection of rotating components alone of a gyroscope, by dividing the piezo-electric ceramic on the driving and extraction sides into two pieces each. CONSTITUTION:A pair of piezo-electric ceramics 3 and 3' for extraction are bonded on both width-wise ends of one of sides of a sound piece 1. Remaining one pair of driving piezo-electric ceramics 2 and 2' are bonded along the ends not contacting the non-ceramics 3 and 3' bonded surfaces of two sides adjacent to the ceramics 3 and 3' bonded surfaces one per each. Then, the X-way vibration is driven on the ceramics 2 and 2' but the Y-way vibration will not generate because of the offset of charges. On the extraction side, the Y-way vibration is extracted but the X-way vibration will not be because of the offset of charges. Thus, no output is generated during the non-rotation period. Then, when the bonding position of the piezo-electric ceramics deviates across the width of the bonded surface, the driving force of the Y-way bending vibration generated in the respective piezo-electric ceramics will not change on the driving side. Also on the extraction side, the electric charge generated by the X-way vibration will not change.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は回転速度を検出するための横振動音片ジャイロ
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transverse vibrating vibrating bar gyro for detecting rotational speed.

〔従来の技術〕[Conventional technology]

従来の横振動音片ジャイロを第２図（ａ）　、　（ｂ）
および（Ｃ）に例示する。本図において、断面が正方形
の音片１の一つの側面の中央に駆動用の圧電セラミック
２および前記側面と直角をなす隣の側面の中央Ｋｍ出用
の圧電セラミック３が接着されている。Figures 2 (a) and (b) show a conventional transverse vibrating sound bar gyro.
and (C). In this figure, a piezoelectric ceramic 2 for driving and a piezoelectric ceramic 3 for outputting Km at the center of the adjacent side that is perpendicular to the side are bonded to the center of one side of a sound bar 1 having a square cross section.

本横振動音片ジャイロにおいて、駆動用の圧電セラミッ
クに信号を加えると、音片は第１図（ｂ）のようなモー
ドでＸ軸方向の屈曲振動をするが抽出用の圧電セラミッ
クが、駆動用の圧電セラミックと直角の側面中央部に接
着されているので抽出用圧電セラミック内で発生する電
荷は正負同量となシ打消し合う。したがって、抽出用の
圧電セラミックでの出力は発生しない。しかし、本横振
動音片ジャイロを第１図（ａｌ　Ｋ示したように２軸で
回転させると、コリオリの力によｆｉＹ軸方向に力が生
じｍ１図（ｃ）に示したようなＹ軸方向の横振動も発生
する。したがって、抽出用圧電セラミックに出力を生じ
る。コリオリの力Ｆｃは、次式で表わされる。In this transverse vibrating vibrating bar gyro, when a signal is applied to the driving piezoelectric ceramic, the vibrating bar vibrates bending in the X-axis direction in the mode shown in Figure 1 (b), but the extraction piezoelectric ceramic Since the extraction piezoelectric ceramic is bonded to the central part of the side surface at right angles to the extraction piezoelectric ceramic, the charges generated within the extraction piezoelectric ceramic are equal in positive and negative amount and cancel each other out. Therefore, no power is generated in the piezoelectric ceramic for extraction. However, when this transverse vibrating sound bar gyro is rotated on two axes as shown in Fig. 1 (al K), a force is generated in the fi Y-axis direction due to the Coriolis force, and the Y-axis as shown in m1 (c) is generated. Transverse vibrations in the direction are also generated, thus producing an output in the extraction piezoelectric ceramic.The Coriolis force Fc is expressed as:

Ｆｃ＝−２ｍΩ； この式でｍは等価質量、Ωは回転の角速度、ｘはＸ軸方
向の速度である。Fc=-2mΩ; In this formula, m is the equivalent mass, Ω is the angular velocity of rotation, and x is the velocity in the X-axis direction.

以上のように、抽出用圧電セラミックに発生する出力に
よりｚ軸に対する回転の角速度を検出することができる
。As described above, the angular velocity of rotation with respect to the z-axis can be detected by the output generated in the extraction piezoelectric ceramic.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来の横振動音片ジャイロは、駆動用および抽
出用の圧電セラミックが音片の各々の面の中央に接着す
ることにより、駆動用の圧電セラミックではＸ軸方向の
振動を駆動せず、抽出用の圧電セラミックではＹ方向の
振動を抽出しない構成となっている。そのため、圧電セ
ラミックの接着位置がずれた場合には駆動用の圧電セラ
ミックによシ、Ｘ方向の振動も駆動される。また、抽出
用の圧電セラミックでもＹ方向の振動も抽出することに
な）％横振動音片ジャイロに回転がない場合にも出力が
発生する。したがって、回転成分のみを正確に検出でき
なくなるという欠点がある。In the conventional transversely vibrating vibrating bar gyro described above, the piezoelectric ceramics for driving and extraction are bonded to the center of each surface of the vibrating bar, so that the piezoelectric ceramic for driving does not drive vibration in the X-axis direction. The piezoelectric ceramic for extraction is configured not to extract vibrations in the Y direction. Therefore, when the bonding position of the piezoelectric ceramic is shifted, the driving piezoelectric ceramic also drives vibration in the X direction. In addition, the piezoelectric ceramic for extraction also extracts vibrations in the Y direction.) An output is generated even when the transverse vibrating vibrator gyro does not rotate. Therefore, there is a drawback that only the rotational component cannot be detected accurately.

また、駆動用圧電セラミックと抽出用圧電セラミックと
の距離が近いので双方の圧電セラミック間で容量を持ち
、直接圧電セラミック間で信号が漏れ無回転時に出力を
発生し易いという欠点もある。Furthermore, since the driving piezoelectric ceramic and the extracting piezoelectric ceramic are close, there is a capacitance between both piezoelectric ceramics, and there is also a drawback that a signal leaks directly between the piezoelectric ceramics and an output is easily generated when there is no rotation.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の目的は上述の欠点を除去した横振動音片ジャイ
ロを提供することＫある。An object of the present invention is to provide a transversely vibrating vibrating bar gyro which eliminates the above-mentioned drawbacks.

本発明の横振動音片ジャイロは、断面が正方形の音片と
、その音片のひとつの側面に幅方向に並べて接着した一
対の圧電セラミックと、前記側面Ｋｇａ！！−する２つ
の側面にそれぞれ一枚づつ接着されたもう一対の圧電セ
ラミックとを有している。The transversely vibrating vibrating bar gyro of the present invention includes a vibrating bar having a square cross section, a pair of piezoelectric ceramics bonded to one side of the vibrating bar side by side in the width direction, and the side surface Kga! ! - and another pair of piezoelectric ceramics bonded to each of the two side surfaces.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図（ａ）　、　（ｂ）および（Ｃ）は本発明の実施
例の斜視図、正面図および右側面図である。図において
、音片ｌの側面の１′）ＩＩＣはニ対の抽出用圧電セラ
ミック３，３′が音片の側面の幅方向の両端に接着しで
ある。また残勺の一対の駆動用圧電セラミック２，２′
は抽出用圧電セラミックの接着されている面に隣接する
２つの側面の抽出用圧電セラミックの接着面に接しない
側の端に沿ってそれぞれ１枚づつ接着されている。第１
図（Ｃ）で十−は圧電セラミックの分極の表側の極性を
表わしている。FIGS. 1(a), 1(b) and 1(C) are a perspective view, a front view and a right side view of an embodiment of the present invention. In the figure, 1') IIC on the side surface of the vibrating bar 1 indicates that two pairs of piezoelectric ceramics 3, 3' for extraction are bonded to both ends of the side surface of the vibrating bar in the width direction. In addition, a pair of drive piezoelectric ceramics 2, 2'
are bonded one by one along the edges of the two side surfaces adjacent to the bonded surface of the extraction piezoelectric ceramic, which are not in contact with the bonding surface of the extraction piezoelectric ceramic. 1st
In Figure (C), the symbol 1 represents the polarity on the front side of the piezoelectric ceramic.

本構成の横振動音片ジャイロにおいて、駆動用圧電セラ
ミックでは第１図（ｃ）でのＸ方向の振動を駆動するが
、Ｙ方向の振動は圧電セラミック２と２′の駆動する向
きが逆で相殺するため発生しない。In the transversely vibrating vibrating bar gyro of this configuration, the driving piezoelectric ceramic drives the vibration in the X direction as shown in Fig. 1(c), but the vibration in the Y direction is driven in the opposite direction by the piezoelectric ceramics 2 and 2'. It does not occur because it cancels out.

また、抽出側の圧−セラミックではＹ方向の振動は抽出
するかＸ方向の振動に対しては圧電セラミック３と３１
Ｃ発生する電荷の極性が逆となシミ荷が相殺し、Ｘ方向
の振動り抽出されない。したかって、無回転時には出力
はまったく発生しないことになる。Also, with the piezoceramic on the extraction side, whether vibrations in the Y direction are extracted or vibrations in the X direction, the piezoelectric ceramics 3 and 31
The polarity of the charge generated by C cancels out and the vibration in the X direction is not extracted. Therefore, when there is no rotation, no output is generated at all.

次に、圧電セラミックの接着位置が接着面の幅方向にズ
した場合を考えると、駆動側では幅方向にズレがあって
もそれぞれの圧電セラミックで発生するＹ方向の屈曲振
動の駆動力は変化しない、また、抽出側でもＸ方向の振
動によシ発生する電荷量は変化しない。したがって、本
発明の横振動音片ジャイロでは圧電セラミックの接着位
置ズレの影響を受けないという特長かある。また、駆動
側と抽出側の圧電セラミックの距離を大きくとれるので
圧電セラミック間の静電的な結合も小さいという利点も
ある。第１図（ｄの圧電セラミックの分極方向は、駆動
側の２枚が同じ極性で、抽出側の２枚が互いに逆の極性
であれは第１図（Ｃ）の表示と異なっても同様の効果が
ある。また、駆動側。Next, considering the case where the bonding position of the piezoelectric ceramic shifts in the width direction of the bonding surface, on the drive side, even if there is a shift in the width direction, the driving force of the bending vibration in the Y direction generated in each piezoelectric ceramic will change. Also, on the extraction side, the amount of charge generated by vibration in the X direction does not change. Therefore, the transversely vibrating vibrating bar gyro of the present invention has the advantage that it is not affected by the displacement of the bonding position of the piezoelectric ceramic. Furthermore, since the distance between the piezoelectric ceramics on the drive side and the extraction side can be increased, there is also the advantage that electrostatic coupling between the piezoelectric ceramics is small. The polarization direction of the piezoelectric ceramic shown in Fig. 1 (d) is the same even if it differs from that shown in Fig. 1 (C) if the two pieces on the drive side have the same polarity and the two pieces on the extraction side have opposite polarities. Effective. Also on the driving side.

抽出側を逆に使用しても同様である。The same applies if the extraction side is used in reverse.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明には、駆動側および抽出側
の圧電セラミックを２枚に分けることＫよシ、接着位置
ズレの影響を受けず、入出力間の結合を小さくできる効
果がある。As explained above, the present invention has the advantage that, by dividing the piezoelectric ceramics on the driving side and the extracting side into two pieces, the coupling between input and output can be reduced without being affected by the displacement of the bonding position.

【図面の簡単な説明】[Brief explanation of drawings]

第１図（ａ）　、　（ｂ）および（Ｃ１はそれぞれ本発
明の横振動音片ジャイロの斜視図、正面図および右側面
図、第２図（ａ）は従来の横振動音片ジャイロの斜視図
、第２図（ｂ）および（Ｃ１は横振動音片ジャイロの振
動モードを説明するための図である。 図において、１・・・・・・音片、２．２’・・・・・
・駆動側圧電セラミック、３，３’・・・・・・抽出側
圧電セラミック０Figures 1 (a), (b) and (C1 are respectively a perspective view, a front view and a right side view of a transversely vibrating sonic bar gyro of the present invention, and Figure 2 (a) is a perspective view of a conventional transversely vibrating sonic bar gyro. Figure 2(b) and (C1 are diagrams for explaining the vibration modes of the transversely vibrating sound bar gyro. In the figures, 1...... sound bar, 2.2'...・
・Drive side piezoelectric ceramic, 3, 3'...Extraction side piezoelectric ceramic 0

Claims (1)

【特許請求の範囲】[Claims] 断面が正方形の音片と、該音片の側面に接着された２対
の圧電セラミックとから構成される横振動音片ジャイロ
において、前記圧電セラミックの一対の圧電セラミック
を前記音片の一側面上の両辺に沿ってそれぞれ配置し、
残りの一対を前記一側面と隣接する２つの側面上にそれ
ぞれ一枚づつ前記一側面と接しない辺に沿って配置した
ことを特徴とする横振動音片ジャイロ。In a transversely vibrating vibrating bar gyro consisting of a vibrating bar with a square cross section and two pairs of piezoelectric ceramics bonded to the sides of the vibrating bar, the pair of piezoelectric ceramics are bonded to one side of the vibrating bar. Place them along both sides of the
A transverse vibrating vibrating bar gyro, characterized in that the remaining pair is arranged on two side surfaces adjacent to the one side surface, one each along sides that are not in contact with the one side surface.
JP60031964A 1985-02-20 1985-02-20 Transverse vibration sound piece gyroscope Pending JPS61191916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60031964A JPS61191916A (en) 1985-02-20 1985-02-20 Transverse vibration sound piece gyroscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60031964A JPS61191916A (en) 1985-02-20 1985-02-20 Transverse vibration sound piece gyroscope

Publications (1)

Publication Number Publication Date
JPS61191916A true JPS61191916A (en) 1986-08-26

Family

ID=12345633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60031964A Pending JPS61191916A (en) 1985-02-20 1985-02-20 Transverse vibration sound piece gyroscope

Country Status (1)

Country Link
JP (1) JPS61191916A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0222508A (en) * 1988-07-11 1990-01-25 Nec Home Electron Ltd Oscillation gyro
JPH05322584A (en) * 1992-11-13 1993-12-07 Murata Mfg Co Ltd Oscillation gyroscope
JPH05322583A (en) * 1992-11-13 1993-12-07 Murata Mfg Co Ltd Oscillation gyroscope
JPH0650761A (en) * 1993-03-08 1994-02-25 Murata Mfg Co Ltd Vibrating gyro
JPH0650762A (en) * 1993-03-08 1994-02-25 Murata Mfg Co Ltd Vibrating gyro
US5343749A (en) * 1991-03-12 1994-09-06 New Sd, Inc. Single ended tuning fork inertial sensor and method
DE3943787C2 (en) * 1988-08-12 1998-05-07 Murata Manufacturing Co Oscillator exciter used as gyro component
US6016698A (en) * 1988-08-12 2000-01-25 Murata Manufacturing Co., Ltd. Vibratory gyroscope including piezoelectric electrodes or detectors arranged to be non-parallel and non-perpendicular to coriolis force direction
US9093638B2 (en) 2012-03-29 2015-07-28 Seiko Epson Corporation Vibrating element, sensor unit and electronic apparatus
US9366535B2 (en) 2011-07-21 2016-06-14 Seiko Epson Corporation Vibration gyro element, gyro sensor, and electronic apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520195A (en) * 1965-10-11 1970-07-14 Gen Electric Solid state angular velocity sensing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520195A (en) * 1965-10-11 1970-07-14 Gen Electric Solid state angular velocity sensing device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0222508A (en) * 1988-07-11 1990-01-25 Nec Home Electron Ltd Oscillation gyro
US6161432A (en) * 1988-08-12 2000-12-19 Murata Manufacturing Co., Ltd. Vibrator and vibratory gyroscope using the same
US6016699A (en) * 1988-08-12 2000-01-25 Murata Manufacturing Co., Ltd. Vibrator including piezoelectric electrodes of detectors arranged to be non-parallel and non-perpendicular to Coriolis force direction and vibratory gyroscope using the same
US6016698A (en) * 1988-08-12 2000-01-25 Murata Manufacturing Co., Ltd. Vibratory gyroscope including piezoelectric electrodes or detectors arranged to be non-parallel and non-perpendicular to coriolis force direction
DE3943787C2 (en) * 1988-08-12 1998-05-07 Murata Manufacturing Co Oscillator exciter used as gyro component
US5522249A (en) * 1991-03-12 1996-06-04 New Sd Inc. Single ended tuning fork inertial sensor and method
US5343749A (en) * 1991-03-12 1994-09-06 New Sd, Inc. Single ended tuning fork inertial sensor and method
JPH05322583A (en) * 1992-11-13 1993-12-07 Murata Mfg Co Ltd Oscillation gyroscope
JPH05322584A (en) * 1992-11-13 1993-12-07 Murata Mfg Co Ltd Oscillation gyroscope
JPH0650762A (en) * 1993-03-08 1994-02-25 Murata Mfg Co Ltd Vibrating gyro
JPH0650761A (en) * 1993-03-08 1994-02-25 Murata Mfg Co Ltd Vibrating gyro
US9366535B2 (en) 2011-07-21 2016-06-14 Seiko Epson Corporation Vibration gyro element, gyro sensor, and electronic apparatus
US9093638B2 (en) 2012-03-29 2015-07-28 Seiko Epson Corporation Vibrating element, sensor unit and electronic apparatus

Similar Documents

Publication Publication Date Title
JP2780643B2 (en) Vibrating gyro
JP3811304B2 (en) Displacement sensor and manufacturing method thereof
JPS61191916A (en) Transverse vibration sound piece gyroscope
JPH02218914A (en) Vibrating gyroscope
JPS61191918A (en) Sound piece type vibration gyroscope
JPS61191917A (en) Tuning fork type vibration gyroscope
JP3218702B2 (en) Vibrating gyro
JPH0429012A (en) Vibration gyro
JPH1054842A (en) Piezoelectric vibrator and external force detecting sensor using the vibrator
JPS60216210A (en) Angular velocity sensor
JP3265913B2 (en) Vibrating gyro
JP3356012B2 (en) Vibrating gyro
JP3136544B2 (en) Gyro device
JP3310029B2 (en) Vibrator
JPH09113279A (en) Vibrational gyro
JP3356013B2 (en) Vibrating gyro
JP3651155B2 (en) Vibrating gyro
JP2000249554A (en) Oscillation gyro
JP3371608B2 (en) Vibrating gyro
JP4345131B2 (en) Vibrating gyro
JP2575212B2 (en) Vibrating gyro
JP3783894B2 (en) Piezoelectric vibration angular velocity meter vibrator
JPH0755475A (en) Piezoelectrically vibrating gyro
JPH0619367B2 (en) Angular velocity sensor
JPH03162615A (en) Vibration gyro