JPH11190633A - Azimuth meter - Google Patents

Azimuth meter

Info

Publication number
JPH11190633A
JPH11190633A JP35956097A JP35956097A JPH11190633A JP H11190633 A JPH11190633 A JP H11190633A JP 35956097 A JP35956097 A JP 35956097A JP 35956097 A JP35956097 A JP 35956097A JP H11190633 A JPH11190633 A JP H11190633A
Authority
JP
Japan
Prior art keywords
turntable
gyro
angle
accelerometer
latitude
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
JP35956097A
Other languages
Japanese (ja)
Inventor
Yuichi Masuda
雄一 増田
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.)
Japan Aviation Electronics Industry Ltd
Original Assignee
Japan Aviation Electronics Industry Ltd
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 Japan Aviation Electronics Industry Ltd filed Critical Japan Aviation Electronics Industry Ltd
Priority to JP35956097A priority Critical patent/JPH11190633A/en
Publication of JPH11190633A publication Critical patent/JPH11190633A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To measure with high accuracy with simple mechanism. SOLUTION: An accelerometer 14 and a gyro 15 are fitted onto a rotary table 12, and input shafts 16, 17 thereof are placed in the nose direction of a moving machine to be mounted with them. The rotary table 12 is set into three angle positions Ψ1 , Ψ2 , Ψ3 , and the respective measured values ax (Ψ1 ), ax (Ψ2 ), ax (Ψ3 ) of the accelerometer 14 and the respective measured values ω×1, ω×2, ω×3 f the gyro 15 at that time are obtained. The attitude angles θ, ϕ of the rotary table 12 to horizontal coordinates are computed from three measured values of the accelerometer 14, Ψ1 , Ψ2 , Ψ3 and gravity of the earth (19b) and true azimuth is computed from θ, ϕ, Ψ1 , Ψ2 , Ψ3 , the measured values of the gyro 15 and latitude of the position of the rotary table 12 and the rotating speed of the earth (19c).

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は例えば自動車など
の移動体に取付けられ、地球自転の角速度を検出するジ
ャイロと傾斜計(加速度計)を用いて真方位を測定する
方位計に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compass which is attached to a moving body such as an automobile and measures a true bearing using a gyro and an inclinometer (accelerometer) for detecting the angular velocity of the earth's rotation.

【0002】[0002]

【従来の技術】この種の従来の方位計は特開平5−16
4563号「方位センサ」に示されている。この方位セ
ンサは回転台上に光ファイバジャイロと、傾斜計とを取
付け、傾斜計の出力により回転台のジャイロ取付け面が
常に水平面と平行するように、回転台を制御し、光ファ
イバジャイロの光ファイバループ面の重力方向と平行と
させた状態でそのループを重力方向と平行なループ径を
軸として回転させ、ループの回転により地球自転方向に
対するループ面の向きが変化し、ジャイロの出力が周期
的に変動し、ループ面が地球自転方向と一致すると、ジ
ャイロ出力は最大となる。従って、このジャイロ出力の
位相から真方位を求めることができる。
2. Description of the Related Art A conventional compass of this type is disclosed in Japanese Unexamined Patent Publication No.
No. 4563, "azimuth sensor". This azimuth sensor mounts an optical fiber gyro and an inclinometer on a turntable, and controls the turntable by the output of the inclinometer so that the gyro mounting surface of the turntable is always parallel to the horizontal plane. With the fiber loop surface parallel to the direction of gravity, the loop is rotated around the loop diameter parallel to the direction of gravity, and the rotation of the loop changes the direction of the loop surface relative to the earth's rotation direction, and the output of the gyro changes periodically. Gyro output becomes maximum when the loop surface coincides with the earth's rotation direction. Therefore, the true azimuth can be obtained from the phase of the gyro output.

【0003】[0003]

【発明が解決しようとする課題】従来の方位計は、回転
台の回転面を水平面に維持する機構が必要であり、この
機構が複雑な上、その水平面制御を精度よく行うことが
比較的困難で、傾斜誤差が生じ、この傾斜誤差にもとづ
くとき、求めた真方位に誤差が生じる。
The conventional compass requires a mechanism for maintaining the rotating surface of the turntable in a horizontal plane. This mechanism is complicated, and it is relatively difficult to accurately control the horizontal plane. Then, a tilt error occurs, and based on the tilt error, an error occurs in the obtained true azimuth.

【0004】[0004]

【課題を解決するための手段】この発明によれば、回転
台にジャイロが取付けられ、ジャイロの入力軸は、回転
台の回転面(ジャイロ取付け面)と平行とされ、また回
転台に加速度計(傾斜計)が取付けられ、この加速度計
の入力軸も回転面と平行とされる。回転台の3つの回転
角度位置で、ジャイロの測定出力と加速度計の測定出力
とがそれぞれ取出され、これら3つの加速度測定値と、
前記測定回転角度とから、回転台の水平座標に対するピ
ッチ角度θとロール角度φとが姿勢角演算手段で演算さ
れ、また上記3つのジャイロ測定角速度と、測定回転角
度と、演算したピッチ角度θとロール角度φとからジャ
イロの入力軸の真方位が真方位演算手段で演算される。
According to the present invention, a gyro is attached to a turntable, an input shaft of the gyro is parallel to a rotation surface (gyro attachment surface) of the turntable, and an accelerometer is attached to the turntable. (Inclinometer) is attached, and the input shaft of this accelerometer is also parallel to the plane of rotation. At three rotation angle positions of the turntable, the measurement output of the gyro and the measurement output of the accelerometer are respectively taken out, and these three acceleration measurement values are obtained.
From the measured rotation angle, the pitch angle θ and the roll angle φ with respect to the horizontal coordinate of the turntable are calculated by the attitude angle calculation means, and the three gyro measurement angular velocities, the measured rotation angle, and the calculated pitch angle θ The true azimuth of the input axis of the gyro is calculated by the true azimuth calculating means from the roll angle φ.

【0005】[0005]

【発明の実施の形態】図1にこの発明の実施の形態を示
す。図1Aに示すように、基台11上に回転台12がモ
ータのような回転台駆動部13により、任意の回転角度
位置をとることができるように、取付けられている。回
転台12上に加速度計(傾斜計)14、角速度計(ジャ
イロ)としての光ファイバジャイロ15が取付けられて
いる。加速度計14、光ファイバジャイロ15の各入力
軸16,17はそれぞれ、回転台12の加速度計、ジャ
イロ取付け面18と平行とされている。基台11上には
制御・演算部19が取付けられている。
FIG. 1 shows an embodiment of the present invention. As shown in FIG. 1A, a turntable 12 is mounted on a base 11 by a turntable drive unit 13 such as a motor so that the turntable 12 can take an arbitrary rotation angle position. An accelerometer (inclinometer) 14 and an optical fiber gyro 15 as an angular velocity meter (gyro) are mounted on the turntable 12. The input shafts 16 and 17 of the accelerometer 14 and the optical fiber gyro 15 are respectively parallel to the accelerometer and gyro mounting surface 18 of the turntable 12. A control / arithmetic unit 19 is mounted on the base 11.

【0006】図1Bに示すように制御・演算部19中の
制御部19aにより、回転台駆動部13が制御され、回
転台11が、3つの回転角度位置Ψ1 ,Ψ2 ,Ψ3 に順
次設定される。その回転角度位置Ψ1 ,Ψ2 ,Ψ3 で加
速度計14からそれぞれ測定値ax(Ψ1 ),ax(Ψ
2 ),ax(Ψ3 )を得、またジャイロ15からそれぞ
れ測定値ωx1 ,ωx2 ,ωx3 を得る。
[0006] The control unit 19a in the control and operation unit 19 as shown in FIG. 1B, turntable drive unit 13 is controlled, the turntable 11, three rotational angular position [psi 1, [psi 2, sequentially [psi 3 Is set. The rotational angular position Ψ 1, Ψ 2, Ψ 3 each measurement ax from the accelerometer 14 (Ψ 1), ax (Ψ
2 ), ax (Ψ 3 ), and measured values ωx 1 , ωx 2 , ωx 3 from the gyro 15.

【0007】加速度計14の前記3つの測定値と、回転
角度位置Ψ1 ,Ψ2 ,Ψ3 と重力の加速度Gとから、回
転台14の取付け面18の水平座標に対するピッチ角度
θ、ロール角度φ、加速度計14のバイアス誤差ABX
が、制御・演算部19中の姿勢角演算部19bで計算さ
れる。更にジャイロ15の前記3つの測定値と、回転角
度位置Ψ1 ,Ψ2 ,Ψ3 と、演算したθ,φと回転台1
2の現在位置の緯度λと、地球自転角速度と用いて、制
御・演算部19中の真方位演算部19cで真方位Ψ
T と、ジャイロ15のバイアス誤差kxbを演算し、そ
の真方位ΨT を表示部20などへ出力する。
From the three measured values of the accelerometer 14, the rotational angle positions Ψ 1 , Ψ 2 , Ψ 3 and the acceleration G of gravity, the pitch angle θ and the roll angle with respect to the horizontal coordinate of the mounting surface 18 of the turntable 14 φ, bias error ABX of accelerometer 14
Is calculated by the attitude angle calculation unit 19b in the control / calculation unit 19. Further, the three measured values of the gyro 15, the rotational angle positions Ψ 1 , Ψ 2 , Ψ 3 , the calculated θ, φ, and the turntable 1
2 using the latitude λ of the current position and the earth rotation angular velocity, the true azimuth calculation unit 19 c in the control and calculation unit 19.
And T, calculates the bias error kxb gyro 15, and outputs the true bearing [psi T display section 20 to such.

【0008】以下、演算部19b,19cにおける演算
について説明する。NED座標系(極地水平座標系)は
図2Aに示すように軸Nは真北方向であり、軸Eは真東
方向であり、軸Dは鉛直下向きである。水平座標系は図
2Bに示すようにNED座標系からD軸まわりに角度Ψ
T 回転した状態である。従ってこの発明方位系のジャイ
ロ15の入力軸17を、これが取付けられた移動体の機
首方向と一致させると、XL 方向がその機首方位とな
る。
Hereinafter, the calculation in the calculation units 19b and 19c will be described. In the NED coordinate system (polar horizontal coordinate system), as shown in FIG. 2A, the axis N is a true north direction, the axis E is a true east direction, and the axis D is a vertically downward direction. The horizontal coordinate system is, as shown in FIG. 2B, an angle Ψ around the D axis from the NED coordinate system.
It is in a state of T rotation. Thus the input shaft 17 of the gyro 15 of the invention bearing system, when this is consistent with the heading of the moving body mounted, X L direction is its heading.

【0009】回転台12の座標系は水平座標系から、最
初にYL 軸回りにピッチ角度θだけ回転させ、次にXL
軸回りにロール角度φだけ回転させたものであり、この
時の軸をX,Y,Zとする。回転台14はこのZ軸の回
りに角度Ψ回転させる。つまり水平座標系をθ→φ→Ψ
回転した状態が回転台座標系となる。いま説明を簡単に
するため、回転台14の回転角度Ψ=0の時、ジャイロ
14の入力軸17をX軸方向とする。よって回転台14
の回転により入力軸17がXY平面を回転する。同様に
説明を簡単にするため、加速度計14の入力軸16も、
回転台12の回転角度Ψ=0でX軸方向を指すようにす
る。よって回転台12の回転により入力軸16がXY平
面を回転する。
[0009] coordinate system of the turntable 12 from the horizontal coordinate system is initially rotated by the pitch angle θ on the Y L axis, then X L
It is rotated by a roll angle φ around the axis, and the axes at this time are X, Y, and Z. The turntable 14 is rotated by an angle に about the Z axis. In other words, the horizontal coordinate system is θ → φ → Ψ
The rotated state is the turntable coordinate system. For the sake of simplicity, the input shaft 17 of the gyro 14 is set in the X-axis direction when the rotation angle 回 転 of the turntable 14 is zero. Therefore, the turntable 14
Rotates the input shaft 17 on the XY plane. Similarly, for simplicity, the input shaft 16 of the accelerometer 14 is also
The rotation angle of the turntable 12 is set to point in the X-axis direction at Ψ = 0. Therefore, the rotation of the turntable 12 causes the input shaft 16 to rotate on the XY plane.

【0010】回転台座標系から水平座標系に変換する回
転行列は次式に与えられる。 従って回転台軸から水平軸に変換する時の回転行列CTL
は、次式となる。
[0010] The rotation matrix for converting from the rotary table coordinate system to the horizontal coordinate system is given by the following equation. Therefore, the rotation matrix C TL when converting from the rotary table axis to the horizontal axis
Becomes the following equation.

【0011】CTL=θ・φ・Ψ また、逆に水平軸から回転台軸に変換する時の回転行列
LTは、CTLの転置行列である。CLTの各要素を次のよ
うに表わす。 (1)姿勢角の算出回転台12上で検出する地球重力a
は次で表わせる。
C TL = θ · φ · Ψ Conversely, the rotation matrix C LT when converting from the horizontal axis to the rotary table axis is a transposed matrix of C TL . Represent each element of C LT as follows. (1) Calculation of attitude angle Earth gravity a detected on the turntable 12
Can be expressed as follows.

【0012】 使用する加速度計はこの方位計では前述したように1軸
(X軸)のみであるから ここで、3点の既知の回転台12の角度位置Ψ1
Ψ2 ,Ψ3 について加速度計14の計測値ax
(Ψ1 ),ax(Ψ2 ),ax(Ψ3 )を式(1)に代
入して次の連立方程式を作る。 この式を行列a,H,xで表わすと次式となる。
[0012] The accelerometer to be used has only one axis (X axis) as described above in this compass Here, three known angular positions 回 転1 , 1
Measurement value ax of accelerometer 14 for Ψ 2 and Ψ 3
By substituting (Ψ 1 ), ax (Ψ 2 ), and ax (Ψ 3 ) into the equation (1), the following simultaneous equations are created. When this equation is represented by matrices a, H and x, the following equation is obtained.

【0013】 a= H ・ x この両辺の左よりHの逆行列H-1をかけると次式となる θ,φ,ABXは次で求まる。A = H · x When the inverse matrix H −1 of H is applied from the left of both sides, the following equation is obtained. θ, φ, and ABX are obtained as follows.

【0014】 θ= sin-1(X1/G) φ= sin-1(X1/cos θ),ABX=X3 (2) (2)真方位の算出 回転台12上で検出される地球自転角速度は次式で表わ
せる。 ωE:地球自転角速度=15°/Hour、λ:回転台12
の位置の緯度 ωN : ωE×cos λ ωD :−ωE×sin λ この実施例ではジャイロ15の入力軸はX軸のみである
から、ジャイロ15が測定するωxは次式である。
Θ = sin −1 (X1 / G) φ = sin −1 (X1 / cos θ), ABX = X3 (2) (2) Calculation of True Direction The rotation angle of the earth detected on the turntable 12 is It can be expressed by the following equation. ωE: Earth rotation angular velocity = 15 ° / Hour, λ: Turntable 12
Position latitude ω N: ωE × cos λ ω D: Since in this example -ωE × sin λ input shaft of the gyro 15 is only the X-axis, .omega.x the gyro 15 measures are the following expression.

【0015】 ωD 項を左辺に移動する。[0015] Move the ω D term to the left side.

【0016】 上式について、3点の既知の回転台12の角度位置
Ψ1 ,Ψ2 ,Ψ3 についてのジャイロ15のxを計測値
ωx1 ,ωx2 ,ωx3 をそれぞれ式(2)に代入して
下記の連立方程式を作る。つまり、 この式を行列ω,H,xでω=H・xと表わす。
[0016] With respect to the above equation, x of the gyro 15 for the three known angular positions 回 転1 , Ψ 2 , Ψ 3 of the turntable 12 are substituted for the measured values ωx 1 , ωx 2 , ωx 3 into the equation (2), respectively. Make the following simultaneous equations. That is, This equation is expressed as ω = H · x by matrices ω, H, x.

【0017】∴ x=H-1・ω ωD が既知(=緯度が既知)である場合は、上式を1回
解くことにより、真北方位ΨT とkxbをそれぞれ次式
で算出する。 真方位:ΨT =tan -1(x2/x1) バイアス:kxb=x3 (4)
If ∴ x = H -1 · ω ω D is known (= latitude is known), the above equation is solved once to calculate the true north direction Ψ T and kxb by the following equations, respectively. True azimuth: Ψ T = tan -1 (x2 / x1) Bias: kxb = x3 (4)

【0018】 以上から理解されるように図1B中の姿勢角演算部19
bでは式(2)を演算して、θ,φ,ABXを求め、真
方位演算部19cで式(4)を演算して真方位ΨT とバ
イアス値kxbを得る。
[0018] As can be understood from the above, the attitude angle calculation unit 19 in FIG.
and calculates the in b Equation (2), θ, φ, seeking ABX, by calculating the equation (4) in true azimuth calculation unit 19c to obtain the true bearing [psi T and the bias value Kxb.

【0019】ωD が未知、つまり回転台12の現在位置
の緯度λが不明の場合は、λの初期値:例えば35°と
適当に与えて式(4)を演算し、 X1=ωN cos ΨT =ωE cos λ・cos ΨT の関係から緯度λ′を次式で求める。 λ′=cos -1(X1/15・cos ΨT ), cos ΨT ≠0 又はλ′=cos -1(X2/15・sin ΨT ), sin ΨT ≠0 このλ′を用いて、真方位(式(4))の計算を行い、
その結果から再びλ′を求め、真方位計算することを繰
返し、λ′が収斂した状態で得られた真方位Ψ T を測定
出力とする。
ΩDIs unknown, that is, the current position of the turntable 12
Is unknown, the initial value of λ: for example, 35 °
Formula (4) is calculated by giving it appropriately, and X1 = ωNcos ΨT= ΩEcos λ ・ cos ΨT Is obtained from the following equation. λ '= cos-1(X1 / 15 · cos ΨT), Cos ΨT≠ 0 or λ '= cos-1(X2 / 15 · sin ΨT), Sin ΨT≠ 0 Using this λ ′, the true direction (Equation (4)) is calculated, and
From the result, λ 'is calculated again and the true direction calculation is repeated.
Return, the true azimuth Ψ obtained with λ 'converged TMeasure
Output.

【0020】上述においては計算の簡便さから、加速度
計14の入力軸16とジャイロ15の入力軸17とを同
一方向としたが、これらは互いにずれていてもよい。ま
た光ファイバジャイロ15の代りに他の角速度を検出す
るジャイロとしてもよい。なお加速度計14のバイアス
ABX、ジャイロ15のバイアスkxはそれぞれ未知数
であるが、これらバイアスを知らなくても、上述のよう
に姿勢角θ,φ,真方位ΨT を求めることができる。
In the above description, the input shaft 16 of the accelerometer 14 and the input shaft 17 of the gyro 15 are set in the same direction for the sake of simplicity of calculation, but they may be shifted from each other. A gyro for detecting another angular velocity may be used instead of the optical fiber gyro 15. Note accelerometer 14 bias ABX, the bias kx gyro 15 is unknown, respectively, without knowing these bias attitude angles as described above theta, phi, it is possible to determine the true orientation [psi T.

【0021】[0021]

【発明の効果】以上述べたようにこの発明によれば、回
転台12を水平面に保持する必要がなく、つまり水平面
保持のための複雑な機構が不用で、機構的構成が頗る簡
単であり、しかも、水平面保持機構の水平面保持誤差に
もとづく真方位測定誤差が生じるおそれがなく、高い精
度で真方位を測定することができる。
As described above, according to the present invention, it is not necessary to hold the turntable 12 on a horizontal surface, that is, a complicated mechanism for holding the horizontal surface is unnecessary, and the mechanical structure is very simple. Moreover, there is no possibility that a true azimuth measurement error based on a horizontal plane holding error of the horizontal plane holding mechanism will occur, and the true azimuth can be measured with high accuracy.

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

【図1】Aはこの発明の実施例の外観を簡略に示す図、
Bはその機能構成を示すブロック図である。
FIG. 1A is a diagram schematically showing the appearance of an embodiment of the present invention;
B is a block diagram showing the functional configuration.

【図2】Aは極地水平座標系(NED座標系)を、Bは
水平座標系をそれぞれ示す図である。
2A is a diagram illustrating a polar horizontal coordinate system (NED coordinate system), and FIG. 2B is a diagram illustrating a horizontal coordinate system.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 回転台と、 その回転台上に取付けられ、その回転台上の取付け面と
平行な入力軸の加速度計と、 上記回転台上に取付けられ、その取付け面と平行な入力
軸のジャイロと、 上記回転台を回転して、その3つの回転角度位置で上記
加速度計の各加速度出力、上記ジャイロの各角速度出力
をそれぞれ測定する手段と、 上記3つの加速度測定値とその測定回転角度とから、上
記回転台の水平座標に対するピッチ角度θ、ロール角度
φを演算する姿勢角演算手段と、 上記ジャイロの測定角速度と、上記測定回転角度と、上
記演算したピッチ角度θ、ロール角度φとから上記ジャ
イロの入力軸の真方位を計算する真方位演算手段と、 を具備する方位計。
1. A turntable, an accelerometer having an input shaft mounted on the turntable and parallel to a mounting surface on the turntable, and an input shaft mounted on the turntable and parallel to the mount surface A means for rotating the turntable and measuring each acceleration output of the accelerometer and each angular velocity output of the gyro at the three rotational angular positions; and the three acceleration measured values and the measured rotation. From the angle, the attitude angle calculating means for calculating the pitch angle θ and the roll angle φ with respect to the horizontal coordinate of the turntable, the measured angular velocity of the gyro, the measured rotation angle, and the calculated pitch angle θ and roll angle φ A true azimuth calculating means for calculating the true azimuth of the input shaft of the gyro from the above.
【請求項2】 上記真方位演算手段に用いる緯度とし
て、適当に緯度データを与えて、上記地球レート行列の
1成分を求め、その求めた成分から上記回転台位置の緯
度を求め、その求めた緯度を用いて同様の計算を繰返
し、収斂した値をその回転台位置の緯度とする手段を含
むことを特徴とする請求項1記載の方位計。
2. Latitude data is appropriately given as latitude used in the true azimuth calculation means, one component of the earth rate matrix is obtained, and the latitude of the rotary table position is obtained from the obtained component. 2. The compass as claimed in claim 1, further comprising means for repeating the same calculation using the latitude, and using the converged value as the latitude of the turntable position.
JP35956097A 1997-12-26 1997-12-26 Azimuth meter Pending JPH11190633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35956097A JPH11190633A (en) 1997-12-26 1997-12-26 Azimuth meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35956097A JPH11190633A (en) 1997-12-26 1997-12-26 Azimuth meter

Publications (1)

Publication Number Publication Date
JPH11190633A true JPH11190633A (en) 1999-07-13

Family

ID=18465135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35956097A Pending JPH11190633A (en) 1997-12-26 1997-12-26 Azimuth meter

Country Status (1)

Country Link
JP (1) JPH11190633A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010047078A1 (en) 2008-10-20 2010-04-29 住友精密工業株式会社 Six-direction orienting device
US9015952B2 (en) 2010-11-19 2015-04-28 Sumitomo Precision Products Co., Ltd. Six-direction directing device
WO2019230198A1 (en) * 2018-05-30 2019-12-05 パナソニックIpマネジメント株式会社 Position adjusting device, and projection system provided with same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010047078A1 (en) 2008-10-20 2010-04-29 住友精密工業株式会社 Six-direction orienting device
US8528220B2 (en) 2008-10-20 2013-09-10 Sumitomo Precision Products Co., Ltd. Six-direction indicator
US9015952B2 (en) 2010-11-19 2015-04-28 Sumitomo Precision Products Co., Ltd. Six-direction directing device
WO2019230198A1 (en) * 2018-05-30 2019-12-05 パナソニックIpマネジメント株式会社 Position adjusting device, and projection system provided with same
CN111886481A (en) * 2018-05-30 2020-11-03 松下知识产权经营株式会社 Position adjusting device and projection system provided with same
JPWO2019230198A1 (en) * 2018-05-30 2021-07-01 パナソニックIpマネジメント株式会社 Positioning device and projection system equipped with it

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