JPS59170717A - Gyro device - Google Patents
Gyro deviceInfo
- Publication number
- JPS59170717A JPS59170717A JP58045234A JP4523483A JPS59170717A JP S59170717 A JPS59170717 A JP S59170717A JP 58045234 A JP58045234 A JP 58045234A JP 4523483 A JP4523483 A JP 4523483A JP S59170717 A JPS59170717 A JP S59170717A
- Authority
- JP
- Japan
- Prior art keywords
- tuning fork
- base
- piezoelectric element
- gyro device
- center
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
Abstract
Description
【発明の詳細な説明】
本発明は、ジャイロ装置、符に振動型或は音叉型ジャイ
ロ装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gyro device, particularly a vibration type or tuning fork type gyro device.
徒来、この種の糸軸型ジャイロ装置Ｍとしては、世」え
は第１図に示すようなものが提案されている。。In the past, as this type of thread shaft type gyro device M, the one shown in FIG. 1 has been proposed. .
この第１図に示す従来のジャイロ装置では、音叉（１）
を、快み軸（３）を介して基台（２）に取付ける。音叉
（１１の上端に近（、コ位置に、変位検出器（６）及び
駆動コイル（４）を取付け、変位検出器（６）の出力を
、１郭動増１Ｊ器（５）を通して駆動コイル（４）に入
力し、音叉（１）の振動振１１〕を一定に保持してる。In the conventional gyro device shown in Fig. 1, the tuning fork (1)
is attached to the base (2) via the pleasure shaft (3). A displacement detector (6) and a drive coil (4) are installed near the upper end of the tuning fork (11), and the output of the displacement detector (6) is sent to the drive coil through the 1-contour intensifier 1J (5). (4), and the vibration vibration 11 of the tuning fork (1) is held constant.
音叉（１）の撓み軸（３）の軸（２−２）のまわりに、
角速度Ωが入力されると、音叉（１）の撮動速度Ｙ、入
力角速度Ωに対応したコリオリの力Ｆｃが発生し、これ
により、音叉（１１全体が旋イ（Ｚ −Ｚ ）のまわＦ
）Ｋ交番的に回転する。Around the axis (2-2) of the deflection axis (3) of the tuning fork (1),
When the angular velocity Ω is input, a Coriolis force Fc corresponding to the imaging velocity Y of the tuning fork (1) and the input angular velocity Ω is generated.
) K rotates alternately.
即ち、捩り振動が、音叉（１）に発生する。That is, torsional vibration occurs in the tuning fork (1).
第１図に示す従来例では、音叉（１）のこの１戻り振動
を、４Ｊｄり検出器（８）で検出し、この検出出力と１
．４動増巾器（５）の出力とを、デモシュレータ（７）
で同ｊｕ」整流することにより、入力角速度Ωを検出し
て、ジャイロ装置を構成している。In the conventional example shown in FIG.
．． The output of the quadruple amplifier (5) is connected to the demosulator (7).
The input angular velocity Ω is detected by rectifying the input angular velocity Ω to form a gyro device.
しかしながら、かかる従来の撮動型ジャイロ装置にあっ
ては、重量の大きい音叉（１）を片持ち的に支持する構
造の為、悦み＠（３）の負荷容量を大きくとる必要かあ
り、この部分が大型化すること、入力角速ＵＱに対応し
たコリオリの力Ｆｃを、大きな慣性モーメントを有する
音叉（１）の回転角とじて取り出す方式の為、入力角速
度Ωに対する感度が悪（、これを増大しようとすると、
装置全体が大型化してしまうこと、撓み軸（３）と捩り
検出器（８）とが別々の部材から構成されている為、構
造が複雑であり、且つ検出感度が低いこと等の問題点（
欠点）があった。However, in such a conventional imaging type gyro device, since the heavy tuning fork (1) is supported in a cantilevered manner, it is necessary to increase the load capacity of the joy @ (3). Due to the large size of the part, and the method of extracting the Coriolis force Fc corresponding to the input angular velocity UQ as the rotation angle of the tuning fork (1), which has a large moment of inertia, the sensitivity to the input angular velocity Ω is poor (this If you try to increase
Problems include that the entire device becomes large, that the deflection shaft (3) and the torsion detector (8) are constructed from separate members, resulting in a complex structure and low detection sensitivity.
There were drawbacks).
従って、本発明の主目的は、このような従来のジャイロ
装置が有する問題点（欠点）に清−目して大きな″負性
質量と平板状の撓み部とを有し、大振巾振動を可能にし
た音叉を、一枚の短冊状のバイモルフによって基台上に
支持するとい５ ％ｉめて単純な構成により、上記問題
を解決ｌ〜だジャイロ装置な提供することにある。Therefore, the main object of the present invention is to eliminate the problems (defects) of such conventional gyro devices and to provide a gyro device that has a large negative mass and a flat plate-like bending portion, and that can generate large amplitude vibrations. The object of the present invention is to provide a gyro device that solves the above problems with a very simple configuration in which a tuning fork is supported on a base by a single strip-shaped bimorph.
本発明によるジャイロ装置の特徴とする点は、基台と、
該基台の面と長手方向が１直角になるよう一端を上記基
台にとりつけた検出用圧電素子と、上記基台の面と平行
な振動面を嘴し軸が上記咲出用圧電系子の開と平行とな
るよう配鉤、シた名文と、該音叉の基部にその一脚か上
記基台の曲と平行且つ上記音叉の振動質量都の方向に延
長する如く取付けたＬ字状取付部とよりなり、上記り字
状取付部の一脚に上記検出用圧電素子の他端を取付けた
ことに在る。The gyro device according to the present invention is characterized by a base;
a detection piezoelectric element whose one end is attached to the base so that its longitudinal direction is perpendicular to the plane of the base; and a piezoelectric element for blooming whose beak has a vibrating plane parallel to the plane of the base and whose axis is attached to the base. The hook is arranged so that it is parallel to the opening of the opening, and the famous sentence ``Shi'' is placed on the base of the tuning fork. The other end of the detection piezoelectric element is attached to one leg of the cursor-shaped mounting part.
以下、上述した特徴を有する本発明によるジャイロ装置
の一例を、第２及び第３図を参照して説明しよう。尚、
同図に於て、第１図に対応する符号は、互にｍＪ−素子
を示すものとする。Hereinafter, an example of a gyro device according to the present invention having the above-mentioned characteristics will be described with reference to FIGS. 2 and 3. still,
In this figure, the symbols corresponding to those in FIG. 1 each indicate an mJ-element.
第２図は、本発明によるジャイロ装置の一例の斜視図で
あり、第３図は第２図の矢印（Ａ） ：′：ＰＪ向から
見た側面図である。第２及び第３図に示す本発明の例に
於ては、平板状の基台（２）上に、その上面と略々垂直
となる如（、短冊状バイモルフから成る入力角速度Ωを
検出するための薄板状の検出用圧電素子（３Ｑ、ｌを取
付ける。尚、この際、必要に応じて、取付部（３０’）
を用いてもよい。この本発明の例では、音叉（１１を、
一対の犬なる質量を有する振動員量部（１−１）、（１
−１）と、これ等の夫々に連結した係み部（１−２）、
（１−２）と、両撓み部（１−２）。FIG. 2 is a perspective view of an example of a gyro device according to the present invention, and FIG. 3 is a side view of the gyro device as viewed from the direction of arrow (A):':PJ in FIG. In the example of the present invention shown in FIGS. 2 and 3, the input angular velocity Ω is detected by a rectangular bimorph on a flat base (2), which is approximately perpendicular to the upper surface of the base (2). Attach the thin plate-shaped detection piezoelectric elements (3Q, l). At this time, if necessary, attach the mounting part (30')
may also be used. In this example of the present invention, a tuning fork (11 is
A pair of vibration member mass parts (1-1), (1
-1) and engaging parts (1-2) connected to each of these,
(1-2) and both flexible parts (1-2).
（１−２）の各遊端を連結する基部（１−３）とより構
成する。ここで基部（１−３）の上面に、Ｌ字状取付部
（１−４）の一方の脚（１，−４ａ）が略々垂直上方に
伸びる如く固定し、他方の脚（１−４，ｂ）が画境み部
（１−２）、（１−２）と略々平行に伸びる如（なすと
共に、基部（１−３）の下面にカウンターウェイト部（
１−５）を取り付ける。(1-2) and a base (1-3) connecting each free end. Here, one leg (1, -4a) of the L-shaped attachment part (1-4) is fixed to the upper surface of the base (1-3) so as to extend approximately vertically upward, and the other leg (1-4 , b) extend approximately parallel to the image border portions (1-2) and (1-2), and a counterweight portion (
Attach 1-5).
上述の如（構成した音叉（１）を、次の如（、薄板状の
振動検出用圧電素子（３０）に固定する。即ち、音叉（
１）の両撓み部（１−２）、（１−２）間の隙間（ｇ）
に、薄板状の圧電素子Ｇ（））の巾方向（Ｂ）が延在す
る如（、圧′屯素子Ｃ３０＋の上端に、Ｌ字状取付部（
１−４）の脚（１−４ｂ）を固定する。かくすれば、音
叉（１）は、その振動面（音叉面）が、第２図に示す如
く、水平に配置された基台（２）の板面と略々平行、即
ち圧電素子（３０）の長手方向（Ｘ−Ｘ）と直交する如
（、圧電素子（３０）に取付けられる。尚、この場合、
画境み部（１−２）、（１−２）間の１原間（ｇ）は、
侯述の如（圧７扛系子□□□）か低動し、音叉（１）の
壁動面が傾斜しても、圧電素子（７）と両撓み部（１−
２）、（１−２）が接触しないような値に設定されてい
ると共に、音叉（ＩＩの振ｍＪ負量部（１−１）、（１
−１）及びカウンターウエイト部（１’−５）等が、基
台（２）の」−面に接触しないように、圧電素子（３０
１の基台（２）上の高さは設定されている。The tuning fork (1) configured as described above is fixed to the thin plate-shaped vibration detection piezoelectric element (30) as follows.
Gap (g) between both flexible parts (1-2) and (1-2) of 1)
, an L-shaped mounting portion (
1-4) Fix the legs (1-4b). In this way, the tuning fork (1) has its vibrating surface (tuning fork surface) approximately parallel to the plate surface of the horizontally arranged base (2), that is, the piezoelectric element (30). It is attached to the piezoelectric element (30) in such a way that it is perpendicular to the longitudinal direction (X-X) of the
The distance (g) between the picture border (1-2) and (1-2) is
As mentioned above, even if the wall movement surface of the tuning fork (1) is tilted due to low movement of the piezoelectric element (7) and both bending parts (1-
2), (1-2) are set to a value such that they do not touch, and the tuning fork (II vibration mJ negative amount part (1-1), (1
The piezoelectric element (30
The height above the base (2) of No. 1 is set.
尚、第２図に於て、（４１、＋４］は、両撓み部（１−
２）。In addition, in Fig. 2, (41, +4) represents both bending parts (1-
2).
（１−２）に取付けた例えば駆動用圧電素子で、第１図
の駆動コイルに相当し、これ等は、第１図に示す駆動増
巾器（５）に相当する例えば交流信号源（５）よりの信
号により、駆動され、音叉（１１の振動質ぢ一部（１−
１）、（１−１）に、速度Ｖなる交番振動を励起させろ
。For example, a driving piezoelectric element attached to (1-2) corresponds to the driving coil in FIG. ) is driven by the signal from the tuning fork (11 vibration quality part (1-
1) Excite alternating vibration with velocity V in (1-1).
この場合、検出用圧電素子（３０）の出力電圧を基準電
圧として、交流信号分（５）よりの信号と共に、デモシ
ュレータ（７）に入力し、同期整流することにより、（
Ｚ−Ｚ）軸まわりに入力される角速度Ωに比例した′ｉ
１．圧が、このデモシュレータ（７）より出力され、純
米と１ｉｉｉ様、ジャイロ装置を構成する。In this case, by inputting the output voltage of the detection piezoelectric element (30) as a reference voltage together with the signal from the AC signal component (5) to the demosulator (7) and synchronously rectifying it, (
′i proportional to the angular velocity Ω input around the Z-Z) axis
1. Pressure is output from this demosulator (7), and constitutes a gyro device.
第３図に示す如く、本発明の上述した構成の例では、音
叉（１）、Ｌ字状Ｊ収付部（１−４）及びカウンターウ
ェイト（１−５）全体の重心（Ｇ）は、検出用圧電素子
（，３（＋１の長手方向（同図に於ては、上下方向）の
長さの略％の位置に来るように設計されている。As shown in FIG. 3, in the example of the above-described configuration of the present invention, the center of gravity (G) of the entire tuning fork (1), L-shaped J-accommodating portion (1-4), and counterweight (1-5) is It is designed to be located at a position approximately % of the length of the detection piezoelectric element (, 3 (+1) in the longitudinal direction (vertical direction in the figure).
今、速度Ｖで振動しつつある音叉（１１の振動質１）′
部（１−１）、（１＝１）に、角速度Ｑが作用し、コリ
オリの力Ｆｃが発生すると、音叉（１）に偶力が働き、
その振動面が、前の状態（水平）より、θで示ず変角だ
け傾斜し、検出用圧電素子（３ｊ））のバネ剛性と均り
合う。ここで、検出用圧電素子（３（＋）は、第３図に
示す如（，２枚の薄板状圧電素−子（３０−１）、（３
０−２）を接合したバイモルフと称される素子であるの
で、同図の如（変形した場合、一方の圧電素子（３０−
２）には、圧縮応力が、又、他方の圧電素子（３０−１
）には、引張り応力が発生し、従って、それぞれに設け
た電極（図示せず）間には、変形紗に応じた電圧が生ず
る。即ち音叉（１）の娠動貿量部（１−１）。A tuning fork that is now vibrating at a speed of V (vibration quality 1 of 11)'
When angular velocity Q acts on part (1-1), (1=1) and Coriolis force Fc is generated, a force couple acts on tuning fork (1),
The vibration surface is tilted by a displacement angle not shown by θ from the previous state (horizontal), and is balanced with the spring stiffness of the detection piezoelectric element (3j). Here, the detection piezoelectric element (3(+)) is composed of two thin plate piezoelectric elements (30-1) and (3) as shown in FIG.
Since it is an element called a bimorph, in which one piezoelectric element (30-2) is joined, if it is deformed (as shown in the figure), one piezoelectric element (30-2) is joined.
2), compressive stress is applied to the other piezoelectric element (30-1
), a tensile stress is generated in the deformed gauze, and therefore a voltage corresponding to the deformed gauze is generated between the electrodes (not shown) provided respectively. That is, the movement volume part (1-1) of the tuning fork (1).
（１−１）の振動振巾及びＪ辰動周波数が一定であれば
、圧電素子（３０−１）、（３０−２）間に発生する上
記電圧は、入力角速度Ωに比例するので、ジャイロ装置
を得ることが出来る。If the vibration amplitude and J-spin frequency of (1-1) are constant, the voltage generated between the piezoelectric elements (30-1) and (30-2) is proportional to the input angular velocity Ω, so the gyro equipment can be obtained.
第４図は、糸動質焔一部（１−１） 、 （］、 −１
）が撮動５ｉｔ度Ｖで振動している音叉（１）に、その
振動面に平行な外部加速度αが作用した時の検出用圧部
、素子（３０１の変形状態を示したものである。上述の
如（音叉（１）等の重心（Ｇ）は、検出用圧電素子ｔ、
’（ＯｉＯ長手方向の略中心に位置している為、圧電素
子ｃ３０）は、音叉（１１の水平を保持して、ΔＸだけ
横（水平）方向に変位して、加速度αと拘り合う。Figure 4 shows part of the filamentous substance (1-1), (], -1
) shows the deformed state of the detection pressure part and element (301) when an external acceleration α parallel to the vibration surface acts on the tuning fork (1) which is vibrating at 5 degrees V. As mentioned above, the center of gravity (G) of the tuning fork (1) etc. is determined by the detection piezoelectric element t,
'(Because it is located approximately at the center in the longitudinal direction of OiO, the piezoelectric element c30) maintains the horizontal position of the tuning fork (11) and is displaced in the lateral (horizontal) direction by ΔX, thereby interacting with the acceleration α.
）Ｖｌｌち、検出用圧電素子（，３０１は、第４図に示
す如（、−８字状に彎曲するため、その上半分と下半分
とでは、その曲率が逆転して、その電極間に電圧は発生
しない。即ち、音叉（１）の振動面と平行な、ｆ２１」
ち水平方向の撮動等による加速度が、音叉（１）に加わ
っても、入力角速度Ωの検出に影響を力えろことはない
。)Vll, the detection piezoelectric element (301 is curved in a -8 shape as shown in Fig. 4, so the curvature is reversed between the upper and lower halves, and there is No voltage is generated, i.e. f21, which is parallel to the vibration plane of tuning fork (1).
Even if acceleration due to photographing in the horizontal direction is applied to the tuning fork (1), it will not affect the detection of the input angular velocity Ω.
上述の如（、本発明は、音叉（１）の基部（１−３）に
、飯動賀情部（１−１）、（１−１）方向に向ってその
一脚（１−４ｂ）か伸びるＬ字状取付部（１−４）を設
げ、基台（２）に垂直に取付けた検出用圧電素子（３０
）を、音叉（１）等の略重心（Ｇ）の位置を通ってその
中央隙間（ｇ）を貫通させ、その他端に、Ｌ字状取付部
（１−４）の脚（１−４ｂ）を促１合させると−う惨め
て間車な構造で、ジャイロ装置を実ｕ（、シた。As described above, the present invention provides a tuning fork (1) with its monopod (1-4b) attached to the base (1-3) of the tuning fork (1-1), and the monopod (1-4b) facing the direction of (1-1). A detection piezoelectric element (30
), pass through the center gap (g) through the approximate center of gravity (G) of the tuning fork (1), etc., and attach the leg (1-4b) of the L-shaped attachment part (1-4) to the other end. When the gyro device is set to 1, the gyro device is operated with a pitifully slow structure.
上述した本発明のジャモロ装Ｌ１ユの一例を第］１シ１
に示した従来例と比奴すると、この１メＬ来例のイ１与
村（３）及び捩り検出器（８）の）幾能を、本発明では
一枚の検出用圧電素子（３ｆｌ＋で実現していること及
び音叉（１）等を、その軸方向（これは入力軸（Ｚ−Ｚ
）に一致している）の重心（Ｇ）において支持している
構造のため、本発明は、従来例の如き片持支持と異り、
全体を小弗化出来ると同時に、検出用圧路：累子＋３０
１の強度を低く抑えることができ、検出感度な入き（す
ることが出来る。An example of the Jamoro mounting L1 unit of the present invention described above is shown below.
Compared to the conventional example shown in Fig. 1, the functionality of the conventional example (I1 Yomura (3) and torsion detector (8)) is compared to that of the conventional example shown in Figs. What is realized and the tuning fork (1), etc., in its axial direction (this is the input axis (Z-Z
)), the present invention differs from cantilever support as in the conventional example,
The entire structure can be made small, and at the same time, the detection pressure path: Seiko +30
The intensity of 1 can be kept low, and the detection sensitivity can be increased.
更に、本発明に於てば、音叉（１）のＬ字状取付都県Ｋ
ｊＪ買債部（１−１）、（１−１，）の中央に、音叉（
１）翁の重心（Ｇ）を侍って来ると共に、検出用圧１１
Ｉ素子（３Ｃ）の長手方向の中心に、上記重心ＣＧ）を
一致させることにより、水平方向の摂動等による加速度
の影響をなくすことができる。Furthermore, in the present invention, the L-shaped mounting of the tuning fork (1) is
In the center of jJ bond purchasing department (1-1), (1-1,), there is a tuning fork (
1) As the old man approaches the center of gravity (G), the detection pressure 11
By aligning the center of gravity CG) with the longitudinal center of the I element (3C), the influence of acceleration due to horizontal perturbation etc. can be eliminated.
又、更に、本発明に於ては、音叉（１）のコリオリの力
Ｆｃが発生する振動質量部（１−１）、（１−１）を、
長方形且つ大質量となし、更に、撓み部（１−２Ｌ（１
−２）を音叉（１）の軸方向に長（すると共に振動方向
に薄い板状の構造とすることにより、振動゛質量部（１
−１）、（１−１）の振動時に於ける撮巾を大きくとる
ことができ、高い検出感度を得ることができる。Furthermore, in the present invention, the vibrating mass parts (1-1), (1-1) in which the Coriolis force Fc of the tuning fork (1) is generated,
It is rectangular and has a large mass, and also has a flexible part (1-2L (1
-2) has a plate-like structure that is long in the axial direction of the tuning fork (1) and thin in the vibration direction.
-1) and (1-1), the imaging width during vibration can be increased, and high detection sensitivity can be obtained.
なお、本発明に於ては、Ｌ字状取付部（１−４）とカウ
ンターウェイト部（１−５）とを、音叉（１）とは別部
材で作っているので、音叉（１）自体は、平板からワイ
ヤカット等の加工方法により、簡単、ｉ％精度且つ安価
に作ることが出来る。In addition, in the present invention, since the L-shaped attachment part (1-4) and the counterweight part (1-5) are made of separate members from the tuning fork (1), the tuning fork (1) itself can be easily manufactured with i% accuracy and at low cost by processing a flat plate using a processing method such as wire cutting.
又、上述の本発明の例では、検出用圧電素子（３０１と
して２枚の薄板状圧電菓子を接合した＠造のバイモルフ
を用いたが、強度上の設計要求によっては、２枚の薄叡
状圧′屯素子間に、金属等の高強度拐からなる薄板をサ
ンドインチ偽造としたバイモルフ？検出用上１ｉ、シφ
子いＯ）として用いることも用油である。In addition, in the above-described example of the present invention, a bimorph made by @ made by joining two thin piezoelectric confections was used as the detection piezoelectric element (301), but depending on the design requirements for strength, it is possible to For bimorph detection, a thin plate made of high-strength metal such as metal is used between the pressure elements.
It is also used as a commercial oil.
更に、上記音叉（１］の人力軸（Ｚ−Ｚ）まわりの…性
能率と検出用圧電素子Ｃ３０）の曲ゲバネ定数とで決ま
るｍ （ｚ−＝ ｚ ）まわりの角変位に関する自由土
辰動周波数を略々音叉（１）の共少周波数と一致させる
ことにより、検出感度を上けることができる。Furthermore, the free earth rotational motion regarding the angular displacement around m (z-=z) determined by the performance rate and the curved Gespring constant of the detection piezoelectric element C30) around the human power axis (Z-Z) of the tuning fork (1). The detection sensitivity can be increased by making the frequency approximately match the co-consistent frequency of the tuning fork (1).
上述は１、主として本発明の一好適６１」に就いてであ
るが、上述した本発明の主旨を逸脱せずに、多（の変化
変更が当該業者によりなされ得ること、明らかであろう
。Although the above description mainly concerns 1, one embodiment 61 of the present invention, it will be obvious that many changes and changes can be made by those skilled in the art without departing from the gist of the present invention as described above.
第１商は従来のジャイロ装置のチＳ１視図、第２図は本
発明によるジャイロ装置の一例の斜視図、第３図は角速
度が人力された状態を示すその側面図、第４図は加速度
が入力された状態を示す第２図の狽１］田Ｊ図である。
図に於て、（１）は音叉、（２）は基台、（４）は駆動
用圧電素子、（５）は交流信号係、（７）はデモジュン
ータ、（３０）は検出用圧電素子を夫々示す。
第１図
２ ゛
第２図The first quotient is a Chi S1 perspective view of the conventional gyro device, FIG. 2 is a perspective view of an example of the gyro device according to the present invention, FIG. 3 is a side view of the gyro device showing the state in which the angular velocity is manually controlled, and FIG. 4 is the acceleration FIG. 2 is a diagram showing a state in which ``1'' is input. In the figure, (1) is a tuning fork, (2) is a base, (4) is a drive piezoelectric element, (5) is an AC signal section, (7) is a demo junta, and (30) is a detection piezoelectric element. Show each. Figure 1 2 ゛Figure 2
Claims (1)
端を上記基台にとりつけた検出用圧電素子と、上記基台
の面と平行な振動面を有し軸が上記検出用圧電素子の面
と平行となるよう配置した音叉と、該音叉の基部にその
一脚が上記基台の面と平行且つ上記音叉の摂動質量部の
方向に延長する如（取付けたＬ字状取付部とよりなり、
該り字状取付部の一脚に上記恢出用圧電累子の他端を取
付けたことを特徴とするジャイロ装置＆ 。 ２、上記特許請求の範囲第１項に於て、上記音叉等の重
心を上記検出用圧電素子の長手方向の略々中心に位置さ
せることを特徴とするジャイロ装置。 ３、上記特許ｆｆ１ｌ求の範囲第１及び第２項に於て、
上記音叉の基部の上記り字状取付部が取付り゛られた側
とは反対の側にカウンターウェイト部を設け、上記音叉
の上記構出用圧電素子の長手方向の重心が上記音叉のＪ
、ｆみの中心に一致するようにしたことを％徴とするジ
ャイロ装置。 ４、上記特許請求の範囲第１．１Ｊに於て、上記音叉等
の入力ｌｌ￥Ｔ！まわりのＩ＋−↓性能率と上記検出用
圧電系子の曲ケバネ定数とで決定される変角共振周波数
を上記音叉の共（辰周波舷と等しくしたことを特徴とす
るジャイロ装置。 ５、上記時計Ｈた求の範囲第１項に於て、上記音叉を長
方形且つ大質量の２個の条勤′ｆ′ｉ景都と揚動方向に
薄、り且つ入力輔方向に長い２個の読み部とより構成す
ると共に、該焼与都ら上記音叉の基台と結合する位置に
、２１（４ｉの駆卯］用圧ｉム、系子を夫々取伺けたこ
とを％ ｆ、／とするジャイロ装置。[Claims] 1. A base, a detection piezoelectric element whose one end is attached to the base so that its longitudinal direction is perpendicular to the plane of the base, and a vibration surface parallel to the plane of the base. a tuning fork arranged such that its axis is parallel to the plane of the detection piezoelectric element; and a tuning fork having a monopod at the base thereof extending parallel to the plane of the base and in the direction of the perturbation mass part of the tuning fork. (It depends on the installed L-shaped mounting part,
A gyro device and a gyro device characterized in that the other end of the piezoelectric accumulator for excavation is attached to one leg of the L-shaped attachment portion. 2. The gyro device according to claim 1, wherein the center of gravity of the tuning fork or the like is located approximately at the longitudinal center of the detection piezoelectric element. 3. In the first and second paragraphs of the scope of the above patent ff1l,
A counterweight portion is provided on the side of the base of the tuning fork opposite to the side on which the cross-shaped attachment portion is attached, so that the center of gravity in the longitudinal direction of the piezoelectric element for structuring the tuning fork is at the J of the tuning fork.
, a gyro device whose characteristic is that it coincides with the center of f. 4. In claim 1.1J, the input of the tuning fork, etc. ll\T! A gyro device characterized in that a bending resonance frequency determined by a surrounding I+-↓ performance factor and a bending constant of the piezoelectric element for detection is made equal to the same frequency range of the tuning fork. 5. The above-described gyro device. In the first term of the range for finding the clock H, the tuning fork is divided into two rectangular and large-mass pieces, and two pieces that are thin in the lifting direction and long in the input direction. % f, / indicates that the 21 (4i driving force) pressure i and the system were respectively taken at the position where the firing cap is connected to the base of the tuning fork. gyro device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58045234A JPS59170717A (en) | 1983-03-17 | 1983-03-17 | Gyro device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58045234A JPS59170717A (en) | 1983-03-17 | 1983-03-17 | Gyro device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59170717A true JPS59170717A (en) | 1984-09-27 |
| JPH0257247B2 JPH0257247B2 (en) | 1990-12-04 |
Family
ID=12713563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58045234A Granted JPS59170717A (en) | 1983-03-17 | 1983-03-17 | Gyro device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59170717A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6238313A (en) * | 1985-08-13 | 1987-02-19 | Tokyo Keiki Co Ltd | Gyro device |
| JPH01165916A (en) * | 1987-12-22 | 1989-06-29 | Tokyo Keiki Co Ltd | Gyroscopic apparatus |
| JPH02173517A (en) * | 1988-12-26 | 1990-07-05 | Tokyo Keiki Co Ltd | Gyroscope device |
| US5386726A (en) * | 1989-10-03 | 1995-02-07 | Akai Electric Co., Ltd. | Vibratory gyroscope |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695848B2 (en) | 1994-09-02 | 2004-02-24 | Hudson Surgical Design, Inc. | Methods for femoral and tibial resection |
| US8062377B2 (en) | 2001-03-05 | 2011-11-22 | Hudson Surgical Design, Inc. | Methods and apparatus for knee arthroplasty |
-
1983
- 1983-03-17 JP JP58045234A patent/JPS59170717A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6238313A (en) * | 1985-08-13 | 1987-02-19 | Tokyo Keiki Co Ltd | Gyro device |
| JPH0455249B2 (en) * | 1985-08-13 | 1992-09-02 | Tokimec Inc | |
| JPH01165916A (en) * | 1987-12-22 | 1989-06-29 | Tokyo Keiki Co Ltd | Gyroscopic apparatus |
| JPH02173517A (en) * | 1988-12-26 | 1990-07-05 | Tokyo Keiki Co Ltd | Gyroscope device |
| US5386726A (en) * | 1989-10-03 | 1995-02-07 | Akai Electric Co., Ltd. | Vibratory gyroscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0257247B2 (en) | 1990-12-04 |
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