JPH08178673A - Vibrator for piezoelectric vibration gyroscope - Google Patents
Vibrator for piezoelectric vibration gyroscopeInfo
- Publication number
- JPH08178673A JPH08178673A JP6337855A JP33785594A JPH08178673A JP H08178673 A JPH08178673 A JP H08178673A JP 6337855 A JP6337855 A JP 6337855A JP 33785594 A JP33785594 A JP 33785594A JP H08178673 A JPH08178673 A JP H08178673A
- Authority
- JP
- Japan
- Prior art keywords
- vibrator
- electrodes
- electrode
- piezoelectric
- prismatic
- 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
Links
Landscapes
- Gyroscopes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、カメラ一体型ＶＴＲの
手振れ防止や自動車のナビゲーションシステム等に用い
られるジャイロスコープの、特に、棒状屈曲振動子を用
いた圧電振動ジャイロ用振動子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gyroscope used in a camera-integrated VTR for preventing camera shake, an automobile navigation system and the like, and more particularly to a piezoelectric vibrating gyroscope using a rod-shaped bending vibrator.
【０００２】[0002]
【従来の技術】圧電振動ジャイロは、振動している物体
に回転角速度が与えられると、その振動方向と直角な方
向にコリオリ力を生ずるという力学現象を利用したジャ
イロスコープである。互いに直交する二つの方向の励振
と検出が可能であるように構成した振動系において、一
方の振動を励振した状態で、振動子自身を二つの振動面
が交わる線と平行な軸を中心軸として回転させると、前
述のコリオリ力の作用により、この振動と直角な方向に
力が働き、他方の振動が励振される。この振動の大きさ
は、入力側の振動の大きさ及び回転角速度に比例するた
め、入力電圧が一定の場合、出力電圧の大きさから回転
角速度の大きさを求めることができる。2. Description of the Related Art A piezoelectric vibrating gyro is a gyroscope that utilizes a mechanical phenomenon in which a Coriolis force is generated in a direction perpendicular to the vibrating direction when a rotating angular velocity is applied to a vibrating object. In a vibration system configured to be able to excite and detect in two directions orthogonal to each other, with one vibration being excited, the vibrator itself is centered on an axis parallel to the line where the two vibrating planes intersect. When rotated, a force acts in a direction perpendicular to this vibration due to the action of the Coriolis force described above, and the other vibration is excited. Since the magnitude of this vibration is proportional to the magnitude of the vibration on the input side and the rotation angular velocity, when the input voltage is constant, the magnitude of the rotation angular velocity can be obtained from the magnitude of the output voltage.
【０００３】図３は、従来の圧電振動ジャイロ用振動子
の一例の構造概略図であり、正方形の断面形状を有する
角柱状圧電セラミックス４の向かい合った側面１１及び
１３に、振動子の長さ方向に平行に、帯状電極５，６
（図示しない），７と８，９，１０が、それぞれ設けら
れており、帯状電極５，７，９をアース電極、帯状電極
６を駆動用電極、帯状電極８，１０を検出用電極として
いる。FIG. 3 is a schematic structural view of an example of a conventional vibrator for a piezoelectric vibrating gyroscope, in which the side surfaces 11 and 13 of the prismatic piezoelectric ceramics 4 having a square cross-sectional shape face each other in the length direction of the vibrator. Parallel to, the strip electrodes 5, 6
(Not shown), 7 and 8, 9 and 10 are provided respectively, and the strip electrodes 5, 7 and 9 are earth electrodes, the strip electrode 6 is a drive electrode, and the strip electrodes 8 and 10 are detection electrodes. .
【０００４】[0004]
【発明が解決しようとする課題】従来の圧電振動ジャイ
ロ用振動子では、リード線を帯状電極と接続するのに、
複数の面から、それぞれ取り出しており、精度、作業性
が悪く、小型化に適さなかった。In the conventional vibrator for piezoelectric vibrating gyroscope, the lead wire is connected to the strip electrode,
They were taken out from a plurality of aspects, so the accuracy and workability were poor, and they were not suitable for miniaturization.
【０００５】従って、本発明の技術的課題は、振動子の
複数の面に設けられた電極から、それぞれリード線を取
り出す必要がない振動子を供することである。Therefore, a technical problem of the present invention is to provide a vibrator in which it is not necessary to take out lead wires from electrodes provided on a plurality of surfaces of the vibrator.
【０００６】[0006]
【課題を解決するための手段】圧電セラミックスからな
る角柱の側面に、長さ方向に平行な複数個の帯状電極が
施された圧電振動ジャイロ用振動子の軸方向に垂直な一
つの端面に電極を施すことにより、向かい合った両側面
に形成されたアース用電極を共通にすることが可能にな
る。Means for Solving the Problems A plurality of strip electrodes parallel to the length direction are provided on the side surface of a prism made of piezoelectric ceramics, and an electrode is provided on one end face perpendicular to the axial direction of a vibrator for a piezoelectric vibrating gyroscope. It becomes possible to make common the grounding electrodes formed on both side surfaces facing each other.
【０００７】更に、もう一方の端面に電極を施すことに
より、駆動用電極が形成されている一つの側面から、ア
ース電極と検出用電極が設けられているもう一方の側面
に、駆動用電極を引き回し、一つの側面に全部の電極を
集めることができる。Further, by providing an electrode on the other end face, a driving electrode is provided from one side face where the driving electrode is formed to the other side face where the ground electrode and the detection electrode are provided. It can be routed to collect all electrodes on one side.
【０００８】よって、振動子の一つの面で、駆動、検
出、及びアース電極に用いる全ての電極にリード線の接
続が可能となる。Therefore, it is possible to connect the lead wires to all the electrodes used for the drive, detection and ground electrodes on one surface of the vibrator.
【０００９】[0009]
【作用】振動子の一つの面で、全ての電極からリード線
を取り出して、回路と接続できるから、精度が向上し、
小型で安価な圧電振動ジャイロとなる。[Function] Since the lead wires can be taken out from all the electrodes and connected to the circuit on one surface of the vibrator, the accuracy is improved,
It is a small and inexpensive piezoelectric vibrating gyro.
【００１０】[0010]
【実施例】以下、本発明の実施例について、図面を用い
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は、本発明の圧電振動ジャイロ用振動
子の外観斜視図［図１（ａ）］と展開図［図１（ｂ）］
であり、角柱状圧電セラミックス４の向かい合う２組の
側面のうち、１組の側面１１及び１３の両面に３本ずつ
計６本の帯状電極５，６，７，８，９，１０が角柱状圧
電セラミックス４の長さ方向と平行に形成され、帯状電
極５，６，７は側面１１に、帯状電極８，９，１０は側
面１３に形成されている。FIG. 1 is an external perspective view of the vibrator for a piezoelectric vibrating gyroscope of the present invention [FIG. 1 (a)] and a developed view [FIG. 1 (b)].
Of the two sets of side faces facing each other of the prismatic piezoelectric ceramics 4, a total of six strip-shaped electrodes 5, 6, 7, 8, 9, 10 are provided on both sides of one set of side faces 11 and 13, and the total number of the side faces 11 and 13 is a prism. The strip-shaped electrodes 5, 6, 7 are formed on the side surface 11 and the strip-shaped electrodes 8, 9, 10 are formed on the side surface 13 in parallel with the length direction of the piezoelectric ceramics 4.
【００１２】これらの帯状電極を互いに一つおきに接続
して、２端子として分極処理を施し、分極処理後、帯状
電極５，７，９をアース電極とし、残りの帯状電極のう
ち、帯状電極６を駆動用電極、帯状電極８及び１０を検
出用電極として、圧電振動ジャイロ用振動子を構成す
る。更に、アース電極である帯状電極５，７，９が導通
するように、角柱状圧電セラミックスの長さ方向に向い
合った端面１５及び１６のうちの端面１５に電極を形成
すると［図２（ａ）参照］）、アース電極５，７，９が
共通になる。Every other strip electrodes are connected to each other and subjected to polarization treatment as two terminals. After the polarization treatment, the strip electrodes 5, 7 and 9 are used as ground electrodes, and the strip electrodes among the remaining strip electrodes are provided. A piezoelectric vibrating gyro oscillator is configured by using 6 as a driving electrode and the strip electrodes 8 and 10 as detecting electrodes. Further, if electrodes are formed on the end faces 15 of the end faces 15 and 16 facing each other in the length direction of the prismatic piezoelectric ceramic so that the strip electrodes 5, 7, 9 which are ground electrodes are conducted [Fig. 2 (a )]), And the ground electrodes 5, 7, 9 are common.
【００１３】更に、前述の端面１５に向い合った端面１
６に電極を形成（一部でも全体でも可）し［図２（ｂ）
参照］、側面１１にある駆動用電極６を端面１６を介
し、斜線を施した帯で示すように、側面１３側に引き回
し、電極を片面側に寄せる。このようにして、リード線
は、電極６，８，９，１０が存在する側面１３だけから
引き出される。Further, the end face 1 facing the end face 15 described above.
An electrode is formed on 6 (either partially or entirely) [Fig. 2 (b)]
Reference], the driving electrode 6 on the side surface 11 is routed through the end surface 16 to the side surface 13 side as shown by the hatched band, and the electrode is moved to one side surface. In this way, the lead wire is led out only from the side surface 13 on which the electrodes 6, 8, 9, 10 are present.
【００１４】よって、振動子の一つの面からリード線を
取り出せるので、精度向上という点での効果が大きい。Therefore, since the lead wire can be taken out from one surface of the vibrator, the effect of improving accuracy is great.
【００１５】[0015]
【発明の効果】以上説明したように、本発明によれば、
振動子の一つの面からリード線を取り出せ、回路と接続
できるため、精度が向上し、小型で、安価な圧電振動ジ
ャイロ用振動子を提供することができる。As described above, according to the present invention,
Since the lead wire can be taken out from one surface of the vibrator and connected to the circuit, it is possible to provide a vibrator for a piezoelectric vibration gyro with improved accuracy, small size, and low cost.
【図１】本発明の圧電振動ジャイロ用振動子を示し、図
１（ａ）は外観斜視図、図１（ｂ）は展開図。1A and 1B show a vibrator for a piezoelectric vibrating gyroscope of the present invention, FIG. 1A is an external perspective view, and FIG. 1B is a developed view.
【図２】本発明の圧電振動ジャイロ用振動子を示し、図
２（ａ）は、図１（ａ）の手前の方から見た一部の外観
斜視図、図２（ｂ）は、図１（ａ）の奥の方から見た一
部の外観斜視図。FIG. 2 shows a vibrator for a piezoelectric vibrating gyroscope of the present invention, FIG. 2 (a) is a perspective view of a part of the front view of FIG. 1 (a), and FIG. FIG. 1 is a perspective view of part of the outer appearance as viewed from the back of FIG.
【図３】従来の圧電振動ジャイロ用振動子を示す外観斜
視図。FIG. 3 is an external perspective view showing a conventional piezoelectric vibrating gyroscope vibrator.
４ 角柱状圧電セラミックス ５，６，７，８，９，１０ （帯状）電極 １１，１２，１３，１４ （圧電セラミックス）側面 １５，１６ （圧電セラミックス）端面 4 Square columnar piezoelectric ceramics 5,6,7,8,9,10 (strip-shaped) electrodes 11,12,13,14 (Piezoelectric ceramics) side surface 15,16 (Piezoelectric ceramics) end surface
Claims (1)
の向かい合った側面に、該角柱状圧電セラミックスの長
さ方向と平行な複数個の電極を設け、分極処理を施すこ
とによって、二つの直交した方向の屈曲振動を駆動、検
出することを可能にした圧電振動ジャイロ用振動子にお
いて、前記振動子の一つの面で、駆動、検出、及びアー
スに用いる全ての電極に接続可能としたことを特徴とす
る圧電振動ジャイロ用振動子。1. A plurality of electrodes parallel to the longitudinal direction of the prismatic piezoelectric ceramics are provided on opposite side surfaces of the prismatic piezoelectric ceramics having a square cross section, and polarization treatment is performed to provide two orthogonal directions. In a vibrator for a piezoelectric vibration gyroscope capable of driving and detecting the bending vibration of, the one surface of the vibrator can be connected to all electrodes used for driving, detection, and ground. Piezoelectric vibrating gyro oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6337855A JPH08178673A (en) | 1994-12-26 | 1994-12-26 | Vibrator for piezoelectric vibration gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6337855A JPH08178673A (en) | 1994-12-26 | 1994-12-26 | Vibrator for piezoelectric vibration gyroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08178673A true JPH08178673A (en) | 1996-07-12 |
Family
ID=18312621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6337855A Pending JPH08178673A (en) | 1994-12-26 | 1994-12-26 | Vibrator for piezoelectric vibration gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08178673A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6360600B1 (en) | 1997-04-14 | 2002-03-26 | Denso Corporation | Angular velocity sensor, related method for manufacturing the sensor, and piezoelectric vibrator element used in this sensor |
| DE112010005266T5 (en) | 2010-02-15 | 2013-04-25 | Mitsubishi Electric Corporation | FM broadcast reception apparatus |
-
1994
- 1994-12-26 JP JP6337855A patent/JPH08178673A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6360600B1 (en) | 1997-04-14 | 2002-03-26 | Denso Corporation | Angular velocity sensor, related method for manufacturing the sensor, and piezoelectric vibrator element used in this sensor |
| DE112010005266T5 (en) | 2010-02-15 | 2013-04-25 | Mitsubishi Electric Corporation | FM broadcast reception apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040323 |