EP0056550A2 - Vorrichtung zum Ausrichten nach zwei senkrechten Achsen, insbesondere für eine Mikrowellenantenne - Google Patents

Vorrichtung zum Ausrichten nach zwei senkrechten Achsen, insbesondere für eine Mikrowellenantenne Download PDF

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Publication number
EP0056550A2
EP0056550A2 EP81402051A EP81402051A EP0056550A2 EP 0056550 A2 EP0056550 A2 EP 0056550A2 EP 81402051 A EP81402051 A EP 81402051A EP 81402051 A EP81402051 A EP 81402051A EP 0056550 A2 EP0056550 A2 EP 0056550A2
Authority
EP
European Patent Office
Prior art keywords
axis
orientation device
movement
around
elevation
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
Application number
EP81402051A
Other languages
English (en)
French (fr)
Other versions
EP0056550B1 (de
EP0056550A3 (en
Inventor
Bernard Estang
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0056550A2 publication Critical patent/EP0056550A2/de
Publication of EP0056550A3 publication Critical patent/EP0056550A3/fr
Application granted granted Critical
Publication of EP0056550B1 publication Critical patent/EP0056550B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19014—Plural prime movers selectively coupled to common output
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19023—Plural power paths to and/or from gearing
    • Y10T74/19051—Single driven plural drives
    • Y10T74/1906—Nonparallel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20207—Multiple controlling elements for single controlled element

Definitions

  • the present invention relates to an orientation device along two orthogonal axes of rotation and more particularly to an orientation device for microwave antenna.
  • each orientation axis has a motor mechanism which actuates a platform carrying the following orientation axis and its motor.
  • the object of the present invention is to remedy the aforementioned drawbacks.
  • the object of the present invention is an orientation device along two orthogonal axes, in which the motor mechanisms are installed on fixed parts.
  • the orientation device along two orthogonal axes of orientation in which a movement along each of the axes, one carried by the other, is controlled by a motor mechanism, is characterized in that the two motor mechanisms are placed on a fixed part of the device.
  • FIG. 1 represents a perspective view of a device of the prior art used to orient a radar antenna.
  • the motor 31 drives a pinion (not visible in the figure) which meshes with the toothed part 33 of a part 34 supporting the motor 32 and a toothed wheel 35.
  • the motor 32 drives a pinion 36 which meshes the toothed wheel 35.
  • On the outside diameter of the latter is fixed at its top a V-shaped part 37 at the two ends of which is articulated a rod 40 and 41 respectively, the other end of which is articulated on a point on the surface of the antenna 42 to be oriented.
  • the latter is also held in its center by a part 38 which can pivot relative to the part 34 around the articulation 39.
  • the two motors 31 and 32 therefore make it possible to orient the antenna 42 by making it pivot relative to two axes, respectively the axis 43 by pivoting of the part 34 around the articulation 39 and the axis 44 by pivoting of the part 37 therefore of the wheel 35. But the circular movement of the antenna around the axis 43 is slowed down by the inertia of the weight of the motor 32.
  • the present invention overcomes this drawback.
  • the device according to the invention comprises a fixed part in the form of an elongated C, the two arms l, 2 of which form the first branch of the gimbal, and a mobile part 4a, 4b, 8 forming the gimbal nut whose longitudinal axis 5 constitutes one of the two orientation axes.
  • This cardan nut consists of a cylindrical part 4a, 4b and an external coaxial structure 8 whose part 4a, 4b is decoupled and inside which it can pivot around the common longitudinal axis 5.
  • the structure 8 can rotate itself around axis 3 orthogonal to axis 5, between arms 1 and 2 of the fixed part.
  • FIG. 3 represents a side view in section of FIG. 2, after having made the structure 8 rotate by 90 ° around the axis 3.
  • the arm 1 of the fixed part houses the motor mechanism I controlling the so-called circular movement of the system to be oriented.
  • This mechanism is connected to a transmission shaft 6 placed inside the arm 1 and decoupled from the latter using means 20.
  • the opposite end of the transmission shaft 6 acts on a conical torque formed by a pinion 17, disposed at the end of the shaft 6, and a toothed wheel 18 of axis 3 orthogonal to that of the pinion 17 and the shaft 6.
  • This wheel 18 is placed inside the arm 1 and is connected through the wall of the arm 1 to the structure 8 via the cylindrical part 21 forming one of the points of articulation of the structure 8 with the fixed part.
  • This cylindrical part 21 is decoupled by means 10 from the wall of the arm 1 which it passes through.
  • a cylindrical part formed by two distinct hollow parts 4a and 4b of cylindrical shape, located on either side of the axis 3. These two parts 4a and 4b have a common axis 5 with the external structure 8 from which they are decoupled by means 9.
  • the arm 2 of the C-shaped fixed part houses the motor mechanism II controlling the so-called elevation movement of the system to be oriented.
  • This mechanism is connected to a transmission shaft 7 placed inside the arm 2 and decoupled from the latter by means 20.
  • the opposite end of the shaft 7 acts on a conical couple housed by the arm 2 and formed by a pinion 13 disposed at the end of the shaft 7 and a toothed wheel 14 of axis 3.
  • the first bevel couple drives, by means of a cylindrical part 19 of axis 3, a second bevel couple arranged inside the structure 8 and comprising a toothed wheel 15 of axis 3 coming to mesh with a toothed wheel 16 of axis 5 placed at the periphery of the cylindrical part 4a.
  • the cylindrical transition piece 19 passes through the wall of the arm 2 from which it is decoupled by means 11.
  • the system to be oriented is fixed at A, B and A ', B' on the cylindrical parts 4a and 4b respectively, outside the structure 8. It constitutes the second branch of the gimbal.
  • the motor II rotates, by means of the shaft 7 provided with the pinion 13, the toothed wheel 14 therefore the wheel 15 coupled by the cylindrical part 19.
  • the wheel 15 comes to mesh the wheel 16 and rotates the piece 4a around the axis 5.
  • the system fixed to this piece 4a also pivots around this axis and in its movement drives the piece 4b in synchronism. But the parts 4a and 4b being decoupled from the structure 8, the latter remains stationary.
  • the motor 1 rotates, via the shaft 6 provided with the pinion 17, the toothed wheel 18 around the axis 3 and therefore the structure 8 to which it is fixed, as well as the parts 4a and 4b arranged inside the structure, and therefore the system to be oriented. It is the circular movement around the axis 3.
  • the structure 8 is decoupled, by means 11, from the cylindrical part 19, and the latter and therefore the wheel 15 which is fixed to it, are stationary since the motor mechanism II is not supplied.
  • the wheel 16 As the part 4a and therefore the wheel 16 rotate around the axis 3, given the circular movement of the structure 8, the wheel 16 must move along the toothed wheel 15 of axis 3 with which it is in contact, which causes the rotation of the part 4a around the axis 5 and consequently that of the system to be oriented and that of the part 4b. It is the movement in elevation around axis 5.
  • Means such as gyrometers or annular digital coders arranged between fixed parts and mobile parts make it possible to know and measure the movements in circular and in elevation which makes it possible to control the motor mechanisms accordingly. It is possible to cancel the elevation movement when the motor mechanism in circular I is supplied. Indeed, it suffices to simultaneously control, via the motor mechanism II, the toothed wheel 15 of the same angular quantity as the toothed wheel 18 in order to neutralize the relative movement of the two wheels 16 and 15.
  • the motor mechanisms can be geared motors.
  • the decoupling means 9, 10, 11, 12, 20 are for example ball bearings.
  • the device according to the invention can be used in particular for orienting a microwave antenna. Indeed, such an antenna must be able to be oriented quickly along two axes.
  • the motor mechanisms occupy in the mobile parts a certain volume which could be used more advantageously to accommodate microwave rotary joints therein.
  • the microwave receiver is placed in this case as close as possible to the antenna. It is therefore generally attached to the back of the antenna and is subjected to very strong vibrations. In addition it gives additional inertia during antenna movements and the motors, on moving parts, limit the strikes of antenna travel.
  • the motor mechanisms being installed on fixed parts, allow significant antenna deflections.
  • they release the volume located in the center of the gimbal in favor of rotating joints, thus allowing the microwave receiver to be moved to a fixed part where the vibratory environment is less severe.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP81402051A 1981-01-20 1981-12-22 Vorrichtung zum Ausrichten nach zwei senkrechten Achsen, insbesondere für eine Mikrowellenantenne Expired EP0056550B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8100946 1981-01-20
FR8100946A FR2498379A1 (fr) 1981-01-20 1981-01-20 Dispositif d'orientation selon deux axes orthogonaux, utilisation dans une antenne hyperfrequence et antenne hyperfrequence comportant un tel dispositif

Publications (3)

Publication Number Publication Date
EP0056550A2 true EP0056550A2 (de) 1982-07-28
EP0056550A3 EP0056550A3 (en) 1982-08-11
EP0056550B1 EP0056550B1 (de) 1985-04-17

Family

ID=9254312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81402051A Expired EP0056550B1 (de) 1981-01-20 1981-12-22 Vorrichtung zum Ausrichten nach zwei senkrechten Achsen, insbesondere für eine Mikrowellenantenne

Country Status (4)

Country Link
US (1) US4491847A (de)
EP (1) EP0056550B1 (de)
DE (1) DE3170061D1 (de)
FR (1) FR2498379A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101229817B1 (ko) * 1996-06-27 2013-02-05 인터디지탈 테크날러지 코포레이션 쇼트 코드를 사용하여 ｃｄｍａ 시스템에서 초기 전력 램프-업을 제어하는 방법
GB2505066A (en) * 2012-06-27 2014-02-19 Sub10 Systems Ltd Positioning gear, bracket and system having gear segments

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716416A (en) * 1985-03-28 1987-12-29 Satellite Technology Services, Inc. Antenna dish reflector with integral declination adjustment
US4692771A (en) * 1985-03-28 1987-09-08 Satellite Technology Services, Inc. Antenna dish reflector with integral azimuth track
US5077560A (en) * 1986-02-19 1991-12-31 Sts Enterprises, Inc. Automatic drive for a TVRO antenna
FR2685081B1 (fr) * 1991-12-11 1994-02-04 Thomson Csf Structure a controle d'endommagement intrinseque, procede de fabrication et methode d'utilisation.
US5769748A (en) * 1997-01-16 1998-06-23 Hughes Electronics Corporation Gimbal employing differential combination of offset drives
US6478434B1 (en) 1999-11-09 2002-11-12 Ball Aerospace & Technologies Corp. Cryo micropositioner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070565A (fr) * 1951-11-08 1954-07-29 Savage & Parsons Ltd Dispositif de commande d'un élément pouvant tourner autour de deux axes dans des plans perpendiculaires, applicable notamment aux détecteurs radars
US2980255A (en) * 1958-03-04 1961-04-18 Bernhard M Aagaard Method and apparatus for the grading of coffee beans
US3530477A (en) * 1967-03-28 1970-09-22 Marconi Co Ltd Scanning antenna having drive motors fixed with respect to the antenna
FR2404929A1 (fr) * 1977-09-30 1979-04-27 Bbc Brown Boveri & Cie Installation d'antenne rotative, en particulier pour stations de communications par satellites sur navires et au sol
US4238802A (en) * 1978-12-18 1980-12-09 General Dynamics Corporation, Pomona Division Differential drive rolling arc gimbal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410827A (en) * 1943-06-28 1946-11-12 Sperry Gyroscope Co Inc Scanning device
US2651721A (en) * 1946-03-22 1953-09-08 Sperry Corp Antenna apparatus
US2930255A (en) * 1958-11-28 1960-03-29 Thompson Ramo Wooldridge Inc Dual drive transmissions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1070565A (fr) * 1951-11-08 1954-07-29 Savage & Parsons Ltd Dispositif de commande d'un élément pouvant tourner autour de deux axes dans des plans perpendiculaires, applicable notamment aux détecteurs radars
US2980255A (en) * 1958-03-04 1961-04-18 Bernhard M Aagaard Method and apparatus for the grading of coffee beans
US3530477A (en) * 1967-03-28 1970-09-22 Marconi Co Ltd Scanning antenna having drive motors fixed with respect to the antenna
FR2404929A1 (fr) * 1977-09-30 1979-04-27 Bbc Brown Boveri & Cie Installation d'antenne rotative, en particulier pour stations de communications par satellites sur navires et au sol
US4238802A (en) * 1978-12-18 1980-12-09 General Dynamics Corporation, Pomona Division Differential drive rolling arc gimbal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101229817B1 (ko) * 1996-06-27 2013-02-05 인터디지탈 테크날러지 코포레이션 쇼트 코드를 사용하여 ｃｄｍａ 시스템에서 초기 전력 램프-업을 제어하는 방법
KR101246134B1 (ko) * 1996-06-27 2013-03-25 인터디지탈 테크날러지 코포레이션 쇼트 코드를 사용하여 ｃｄｍａ 시스템에서 초기 전력 램프-업을 제어하는 방법
KR101282530B1 (ko) * 1996-06-27 2013-07-04 인터디지탈 테크날러지 코포레이션 쇼트 코드를 사용하여 ｃｄｍａ 시스템에서 초기 전력 램프-업을 제어하는 방법
GB2505066A (en) * 2012-06-27 2014-02-19 Sub10 Systems Ltd Positioning gear, bracket and system having gear segments

Also Published As

Publication number Publication date
FR2498379A1 (fr) 1982-07-23
DE3170061D1 (en) 1985-05-23
EP0056550B1 (de) 1985-04-17
EP0056550A3 (en) 1982-08-11
FR2498379B1 (de) 1984-10-19
US4491847A (en) 1985-01-01

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