WO2012156594A1 - Procédé de gestion automatique d'un gyromètre longitudinal monté sur un engin volant. - Google Patents
Procédé de gestion automatique d'un gyromètre longitudinal monté sur un engin volant. Download PDFInfo
- Publication number
- WO2012156594A1 WO2012156594A1 PCT/FR2012/000183 FR2012000183W WO2012156594A1 WO 2012156594 A1 WO2012156594 A1 WO 2012156594A1 FR 2012000183 W FR2012000183 W FR 2012000183W WO 2012156594 A1 WO2012156594 A1 WO 2012156594A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flying machine
- longitudinal
- rotation
- gyrometer
- scale factor
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/183—Compensation of inertial measurements, e.g. for temperature effects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
- F42B10/02—Stabilising arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
- F42B15/01—Arrangements thereon for guidance or control
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
Definitions
- the present invention relates to a method of automatic management of a longitudinal gyrometer which is mounted on an inertial navigation flying machine, capable of being rotated, and a flying machine, in particular an air missile, which is provided with such a longitudinal gyrometer.
- the inertial navigation drift limits the range of a missile. Also, when the missile is a missile (for example air-ground) at low costs, it is generally sought to reduce this drift without using additional sensor (other than the inertial unit already present on the missile) to not increase the cost.
- a known method to remedy this problem is to bring the missile autorotation (always in the same direction) around its longitudinal axis. This rotation makes it possible to cancel on average most of the drifts.
- the gyroscope can only operate for high rotation speeds (greater than 1000 ° / s), and keeps a drift of the order 1 ° / s, which makes losing all interest in this solution (drift higher than the usual gyrometric bias of a low-cost MEMS plant); and
- the present invention aims to overcome these disadvantages. It relates to a method of automatic management of a longitudinal gyrometer which is mounted on a flying machine with inertial navigation, in particular an air missile, capable of being rotated, this management method making it possible to avoid the obligation to replace the longitudinal gyrometer by a gyroscope, and thus reduce the cost, for comparable navigation performance.
- said method is remarkable in that, when using the longitudinal gyrometer, said flying machine is automatically controlled so as to rotate it about its longitudinal axis, alternating the direction of rotation. rotation, and this in a regular manner (every n turns, n being an integer greater than or equal to 1) so as to automatically cancel the effect of the scale factor of the longitudinal gyro, in addition to correcting the usual drifts, whose correction is obtained by rotating the flying machine.
- the need for a gyroscope is therefore greatly reduced (disappearance of the drift due to the scale factor of the longitudinal gyrometer), and the present invention makes it possible to maintain a gyroscope for many applications.
- the present invention thus makes it possible to reduce the cost, for navigation performances comparable to those relating to the use of a gyroscope.
- the invention can be applied to any type of missile with inertial navigation, whose roll is possible without any other constraint (scope, concept of use, ).
- n 1
- n 2
- the present invention also relates to a flying machine with inertial navigation, in particular an air missile, capable of being rotated and comprising a longitudinal gyro.
- said flying machine is remarkable in that it comprises automatic control means for controlling said flying machine so as to rotate it about its longitudinal axis, alternating regularly the direction of rotation so as to cancel the effect of the scale factor of the longitudinal gyrometer, in addition to correcting the usual drifts, the correction is obtained by rotating the flying machine.
- said automatic control means are part of a conventional automatic control system of said flying machine, which usually comprises means for bringing the flying machine into rotation.
- the present invention thus makes it possible to correct both the usual drifts (as for the usual method of setting autorotation of the flying machine) and the additional term of scale factor.
- Figure 1 shows a partial and very schematic, a missile provided with a longitudinal gyro, to which the present invention is applied.
- Figure 2 is a graph showing an example of alternating control of the direction of rotation of a flying machine.
- Figure 3 is a schematic representation for explaining the effects generated by the alternating control of the direction of rotation of a flying machine on the measurements of a longitudinal gyro.
- the present invention is applied to a flying machine 1, in particular an air missile, represented for example in FIG. 1, which is of the inertial navigation type, which is capable of being rotated (about its longitudinal axis 3 as illustrated by an arrow 4) and which comprises a conventional longitudinal gyrometer 2.
- the present invention is intended to manage the operation of said longitudinal gyrometer 2.
- This longitudinal gyrometer 2 is well known, and its characteristics are not described further in the following description.
- This flying machine 1 comprises usual control means 5 which are part of a usual control system 6 (shown very schematically in FIG. 1) and which comprise all the elements necessary to guide and control the flying machine 1, in particular so that he can join and destroy a target.
- control means 5 comprise, in particular, information processing means which automatically generate control commands enabling the flying machine 1 to follow an intercept trajectory of the target and control means (not shown) such as control surfaces or any other type of known elements, which automatically apply these steering commands to the flying machine 1. All these usual means are well known and will not be described further below.
- said flying machine 1 further comprises automatic control means 8 for controlling said flying machine
- the object of the present invention is therefore to print on the flying machine 1 no longer a rotation of constant sign around its longitudinal axis, but alternately to rotate the direction of rotation regularly (every n turns, n being a higher integer or equal to 1).
- the roll command is therefore a periodic signal of zero average, unlike the aforementioned conventional method which uses a constant sign command.
- FIG. 3 explains the scaling factor correction.
- this figure 3 there is shown:
- a trihedron R1 comprising usual axes x1, y1 and z1 linked to the flying vehicle 1, which is subjected to a rotation (around x1) generated by the command according to the invention, and this periodically (at each turn), alternately in one direction (-w) then in the other (+ w);
- a R2 trihedron comprising axes x2, y2 and z2 sol which are fixed, and in which are transposed the measurements made.
- FIG. 3 makes it possible to show that, thanks to the invention, bias errors (gyrometric or accelerometric), which are constant in gear axes, self-cancel over a period (one turn) when expressed in ground axes ( navigation mark R2).
- bias errors gyrometric or accelerometric
- the need for a gyroscope is therefore greatly reduced (disappearance of the drift due to the scale factor of the longitudinal gyrometer) and the present invention makes it possible to maintain a gyroscope for many applications. It therefore reduces the cost for navigation performance comparable to the use of a gyroscope.
- the machine axes projection turning towards ground axes remains constant for the longitudinal X axis (unlike the Y and Z axes): the x1 axis remains constant and always equal to + x2 (unlike y1 and z1 which turn well).
- the present invention relates to the guidance and inertial navigation of a flying machine 1, and more particularly the control (limitation) of the inertial drifts during flight, can be applied to any type of inertial navigation missile, whose implementation in roll is possible without any other constraint (scope, concept of employment, ).
- n greater than 1 (less frequent alternation), for example in order to limit the induced aerodynamic force.
- speed of rotation since the speed of rotation may be small, and the drift due to the scale factor generated during a rotation in a first direction being corrected (compensated) only during the rotation in the other direction, it is generally preferable to change the speed of rotation. direction of rotation at each turn. Inertial drift measurements, following the application of the command according to the present invention (in particular on a missile type air-ground, short-range and low-cost, for which the extra cost of a gyroscope is very high.
- the present invention relates to all navigation, namely a complete inertial sensor block (except the longitudinal accelerometer).
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- Navigation (AREA)
- Gyroscopes (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2013149295/11A RU2589508C2 (ru) | 2011-05-13 | 2012-05-09 | Способ автоматического управления гиродатчиком угловой скорости тангажа, установленным на летательном аппарате |
| US14/115,999 US9086284B2 (en) | 2011-05-13 | 2012-05-09 | Method for automatically managing a pitch rate gyroscope mounted on a flying device |
| IL229278A IL229278A (en) | 2011-05-13 | 2013-11-06 | A method for automatically managing a graded gyroscope and mounted on a flying device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1101455A FR2975179B1 (fr) | 2011-05-13 | 2011-05-13 | Procede de gestion automatique d'un gyrometre longitudinal monte sur un engin volant |
| FR1101455 | 2011-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012156594A1 true WO2012156594A1 (fr) | 2012-11-22 |
Family
ID=46062189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2012/000183 Ceased WO2012156594A1 (fr) | 2011-05-13 | 2012-05-09 | Procédé de gestion automatique d'un gyromètre longitudinal monté sur un engin volant. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9086284B2 (fr) |
| EP (1) | EP2522956B1 (fr) |
| ES (1) | ES2764104T3 (fr) |
| FR (1) | FR2975179B1 (fr) |
| IL (1) | IL229278A (fr) |
| RU (1) | RU2589508C2 (fr) |
| WO (1) | WO2012156594A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL207536A (en) | 2010-08-11 | 2016-11-30 | Israel Aerospace Ind Ltd | A system and method for measuring aviation platform angular orientation |
| CN104596545B (zh) * | 2015-01-27 | 2017-07-28 | 北京航天时代光电科技有限公司 | 一种光纤惯性测量装置陀螺仪标度因数温度建模方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017187A (en) * | 1975-06-23 | 1977-04-12 | Sperry Rand Corporation | Double rotation inertial measurement apparatus |
| EP0392104A1 (fr) * | 1989-04-13 | 1990-10-17 | Litton Systems, Inc. | Système de navigation à inertie |
| FR2826447A1 (fr) * | 2001-06-26 | 2002-12-27 | Sagem | Procede et dispositif de navigation inertielle hybride |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3925643A (en) * | 1974-05-13 | 1975-12-09 | United Technologies Corp | Drift correcting gyro system using filters |
| US3925642A (en) * | 1974-05-13 | 1975-12-09 | United Technologies Corp | Strapdown gyro drift calculator |
| US4343035A (en) * | 1980-04-14 | 1982-08-03 | Tanner Walter E | Heading reference system |
| GB8512340D0 (en) * | 1985-05-15 | 1986-10-29 | Gec Avionics | Measuring dynamic system |
| US5442442A (en) * | 1987-10-28 | 1995-08-15 | Litton Systems, Inc. | Ring laser gyroscope scale factor error control apparatus and method control apparatus and method |
| US5194872A (en) * | 1990-11-14 | 1993-03-16 | Charles Stark Draper Laboratory, Inc. | Inertial navigation system with automatic redundancy and dynamic compensation of gyroscope drift error |
| JPH07324941A (ja) * | 1994-06-02 | 1995-12-12 | Matsushita Electric Ind Co Ltd | オフセットドリフト補正装置 |
| US5941935A (en) * | 1996-09-23 | 1999-08-24 | Fernandez; Manuel | Azimuth-axis drift rate determination in an inertial navigator |
| US6032099A (en) * | 1996-11-02 | 2000-02-29 | Fernandez; Manuel | Automatic correction of key error sources in an inertial navigator |
| FR2910615B1 (fr) * | 2006-12-20 | 2009-02-06 | Sagem Defense Securite | Procede de calibrage du facteur d'echelle d'un gyrometre vibrant axisymetrique |
| US8519313B2 (en) * | 2008-12-01 | 2013-08-27 | Raytheon Company | Projectile navigation enhancement method |
-
2011
- 2011-05-13 FR FR1101455A patent/FR2975179B1/fr not_active Expired - Fee Related
-
2012
- 2012-05-09 RU RU2013149295/11A patent/RU2589508C2/ru active
- 2012-05-09 US US14/115,999 patent/US9086284B2/en not_active Expired - Fee Related
- 2012-05-09 EP EP12290158.0A patent/EP2522956B1/fr active Active
- 2012-05-09 ES ES12290158T patent/ES2764104T3/es active Active
- 2012-05-09 WO PCT/FR2012/000183 patent/WO2012156594A1/fr not_active Ceased
-
2013
- 2013-11-06 IL IL229278A patent/IL229278A/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017187A (en) * | 1975-06-23 | 1977-04-12 | Sperry Rand Corporation | Double rotation inertial measurement apparatus |
| EP0392104A1 (fr) * | 1989-04-13 | 1990-10-17 | Litton Systems, Inc. | Système de navigation à inertie |
| FR2826447A1 (fr) * | 2001-06-26 | 2002-12-27 | Sagem | Procede et dispositif de navigation inertielle hybride |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2522956A1 (fr) | 2012-11-14 |
| FR2975179B1 (fr) | 2013-06-07 |
| IL229278A0 (en) | 2014-01-30 |
| EP2522956B1 (fr) | 2019-11-20 |
| ES2764104T3 (es) | 2020-06-02 |
| RU2589508C2 (ru) | 2016-07-10 |
| IL229278A (en) | 2017-05-29 |
| RU2013149295A (ru) | 2015-06-20 |
| FR2975179A1 (fr) | 2012-11-16 |
| US9086284B2 (en) | 2015-07-21 |
| US20140158813A1 (en) | 2014-06-12 |
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