GB830407A - Inductive control device - Google Patents
Inductive control deviceInfo
- Publication number
- GB830407A GB830407A GB12870/56A GB1287056A GB830407A GB 830407 A GB830407 A GB 830407A GB 12870/56 A GB12870/56 A GB 12870/56A GB 1287056 A GB1287056 A GB 1287056A GB 830407 A GB830407 A GB 830407A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polepieces
- armature
- control member
- windings
- central
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/12—Insoluble sulfur (mu-sulfur)
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
- G01D5/225—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils
- G01D5/2258—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the mutual induction between the two coils by a movable ferromagnetic element, e.g. core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Inorganic Chemistry (AREA)
- Electromagnets (AREA)
Abstract
830,407. Correspondence control transducers. CONTRAVES ITALIANA S.p.A. April 26, 1956 [May 3, 1955], No. 12870/56. Class 40 (1). [Also in Group XXXV] An inductive control device comprises a magnetic core having a central polepiece 12 and at least one pair of outer polepieces, the or each pair of outer polepieces being symmetrically disposed on each side of the central polepiece and aligned therewith, a primary winding 21 on the central polepiece, secondary windings on each outer polepiece, said secondary windings for the or each pair of outer polepieces being connected in series opposition and an armature 20 movable in relation to the polepieces by a control member 19, the armature, projecting in its central neutral position beyond each outer polepiece. The winding 21 on the central polepiece is fed from an A.C. source and for small movements of the control member the sensitivity of the device is low. As shown, the core is adjustable and has four outer polepieces 13, 13, (not shown), and 14, 14 and two sets of secondary windings 22, 22 (not shown), on the poles 13, 13 and 23, 23 on the poles 14, 14; the device can thus control two independent follow up systems, i.e. the azimuth and elevation control systems of an anti-aircraft gun. The armature 20 and control member are mounted for universal movement and the armature is of square shape in plan and its inner and outer faces are part-spherical in shape and have a common centre at the mounting centre so' that the armature is of uniform thickness, the surfaces of the polepieces are also part spherical in shape and concentric with the armature surfaces in the centrally-adjusted position of the core; movement of the control handle in alignment with one pair of polepieces does not therefore cause any voltage to be induced into the windings on the other pair of polepieces. The control member 19 is mounted by means of two pairs of bearings the axes of which are at right angles to each other and the control member is retained in its neutral position by providing a re-setting system for each axis of rotation each re-setting system comprises two stirrup members 24, 25 which are freely pivoted for rotation about the axis and which are urged together by a spring 28. An abutment 27 is attached to the frame which contains the core and armature and a second abutment 26 is fixed to the control member; thus movement of the control member moves one of the stirrup members and stresses the spring 28 since the other stirrup member is prevented from movement by the fixed abutment. Release of the control member causes the spring to return the control member to the neutral position. The core is made adjustable by being mounted on a ball-bearing 32 and its position is changed by means of four screws 33; this enables the air gaps between the armature and the outer polepieces to be made equal. The winding on the central polepiece is fed from an A.C. supply through a phase-shifting device consisting of a condenser and resistance, to compensate for the iron losses and bring the output voltage into phase with the supply voltage. Any residual voltage in the secondary windings at the neutral position of the control member is balanced out; for the in-phase component this is achieved by adjustment of the air gap but for the quadrature component this is achieved by feeding into the secondary windings a voltage of the same amplitude and opposite phase from a circuit connected to the supply voltage. Since the windings on opposite pairs of outer polepieces are connected in series opposition the voltages induced into these windings from the central winding oppose each other and movements of the control member from the neutral position which do not move the outer edge of the armature beyond the outer face of one of the polepieces will only produce a very small output voltage since such movement will only produce a very small change in the reluctances of the magnetic circuits linking the two windings with the central winding. Immediately however the edge of the armature passes the outer edge of one of the polepieces the difference in the reluctances of the two magnetic circuits is stated to increase rapidly and hence the output voltage similarly increases rapidly; thus the sensitivity is small for small movements of the control member and large for large movements. The sensitivities can be made different for the two pairs of outer polepieces by making the armature of rectangular shape instead of square shape, by varying the shape of the pairs of polepieces or by varying the number of turns in the windings. If desired the device can have only a single pair of outer polepieces in which case the faces of the armature and polepieces are part cylindrical in shape, and coaxial in the centrally-adjusted position of the core.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT335120X | 1955-05-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB830407A true GB830407A (en) | 1960-03-16 |
Family
ID=11237630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12870/56A Expired GB830407A (en) | 1955-05-03 | 1956-04-26 | Inductive control device |
Country Status (7)
Country | Link |
---|---|
US (1) | US2903663A (en) |
BE (1) | BE547348A (en) |
CH (1) | CH335120A (en) |
DE (1) | DE1102245B (en) |
FR (1) | FR1153152A (en) |
GB (1) | GB830407A (en) |
NL (2) | NL97629C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0006008A2 (en) * | 1978-05-30 | 1979-12-12 | Lucas Ledex, Inc. | Joy-stick controller |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1133012B (en) * | 1958-05-28 | 1962-07-12 | Perkin Elmer Corp | Electrical forced control of any part from a distance with the help of a manually operated control stick that moves in several coordinates |
NL254095A (en) * | 1959-07-28 | |||
DE1154853B (en) * | 1961-06-27 | 1963-09-26 | Continental Elektro Ind Ag | Device for the electrical control of a directional means to be tracked to a moving object |
DE1261581B (en) * | 1963-06-11 | 1968-02-22 | Bodenseewerk Perkin Elmer Co | Control stick arrangement, especially for aircraft controls, in which the position of the control stick is scanned electromagnetically |
US3277719A (en) * | 1963-10-14 | 1966-10-11 | Motorola Inc | Differential pressure transducer |
US3270260A (en) * | 1963-11-18 | 1966-08-30 | Measurement Systems Inc | Stick-operated diaphragm control |
DE1211314B (en) * | 1964-04-08 | 1966-02-24 | Otto Straub | Proportional encoder for controlling aircraft and the like like |
US3716719A (en) * | 1971-06-07 | 1973-02-13 | Aerco Corp | Modulated output transformers |
FR2256521B1 (en) * | 1973-12-26 | 1976-10-08 | Telemecanique Electrique | |
US4306208A (en) * | 1978-05-30 | 1981-12-15 | Ledex, Inc. | Joy-stick controller |
DE2942003C2 (en) * | 1979-10-17 | 1984-08-02 | Danfoss A/S, Nordborg | Electric control device with a control lever |
NL8002727A (en) * | 1980-05-12 | 1981-12-16 | Applied Electronics Bv | CONTINUOUS ELECTRIC DRIVING TRADE. |
US4462015A (en) * | 1982-02-04 | 1984-07-24 | Yishay Netzer | Electromagnetic pick-off control handle |
US4507601A (en) * | 1983-02-25 | 1985-03-26 | Andresen Herman J | Lever stroke control |
NL8401391A (en) * | 1984-05-02 | 1985-12-02 | Inductive Control Syst | CONTACTLESS ELECTRICAL CONTROL DEVICE. |
US5109193A (en) * | 1990-06-07 | 1992-04-28 | F.M.E. Corporation | Inductive digital encoder array |
US5809841A (en) * | 1996-10-17 | 1998-09-22 | Caterpillar Inc. | Variable position detent mechanism for a control lever |
US5979268A (en) * | 1998-01-16 | 1999-11-09 | Caterpillar Inc. | Variable position detent mechanism for a control lever |
US6040758A (en) * | 1998-11-06 | 2000-03-21 | Midway Games Inc. | Potentiometer mounting clip for a joystick controller |
AT11896U1 (en) | 2010-04-08 | 2011-06-15 | Palfinger Ag | CONTACTLESS ELECTRIC CONTROLLER |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1988458A (en) * | 1930-12-27 | 1935-01-22 | Minorsky Nicolai | Electrical controlling system |
DE908921C (en) * | 1942-07-21 | 1954-04-12 | Askania Werke Ag | Magnetic bridge controlled by a mechanical variable |
US2592417A (en) * | 1945-10-08 | 1952-04-08 | Fairchild Camera Instr Co | Gyrostabilizing system |
US2462081A (en) * | 1947-08-22 | 1949-02-22 | Sperry Corp | Servomotor system |
US2516912A (en) * | 1948-05-18 | 1950-08-01 | Kearfott Company Inc | Gyro erecting system |
-
0
- NL NL97623D patent/NL97623C/xx active
- NL NL97629D patent/NL97629C/xx active
- BE BE547348D patent/BE547348A/xx unknown
-
1956
- 1956-04-25 US US580557A patent/US2903663A/en not_active Expired - Lifetime
- 1956-04-26 CH CH335120D patent/CH335120A/en unknown
- 1956-04-26 GB GB12870/56A patent/GB830407A/en not_active Expired
- 1956-04-27 FR FR1153152D patent/FR1153152A/en not_active Expired
- 1956-05-03 DE DEC12962A patent/DE1102245B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0006008A2 (en) * | 1978-05-30 | 1979-12-12 | Lucas Ledex, Inc. | Joy-stick controller |
EP0006008A3 (en) * | 1978-05-30 | 1980-01-09 | Lucas Ledex, Inc. | Joy-stick controller |
Also Published As
Publication number | Publication date |
---|---|
US2903663A (en) | 1959-09-08 |
FR1153152A (en) | 1958-03-03 |
NL97623C (en) | |
BE547348A (en) | |
DE1102245B (en) | 1961-03-16 |
NL97629C (en) | |
CH335120A (en) | 1958-12-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB830407A (en) | Inductive control device | |
GB1211726A (en) | Loop antenna | |
US3019711A (en) | Figure | |
US2678419A (en) | Saturable transformer device | |
GB1367940A (en) | Beam alignment device for a particle beam | |
US2949576A (en) | Electromagnetic pick-off device | |
US2354902A (en) | Remote position indicator | |
US2358910A (en) | Indicating instrument and scale adjustments therefor | |
US2437132A (en) | Remote indicating compass | |
US2651010A (en) | Harmonic error compensator | |
US2416159A (en) | Electric control device | |
US2519365A (en) | Eddy-current generator | |
US2934731A (en) | Potentiometers | |
GB1190161A (en) | Torque Motor | |
US2380609A (en) | Galvanometer | |
US3192495A (en) | Electromagnetic transducers | |
US2438406A (en) | Vane type transmitter | |
GB948123A (en) | Magnetostrictive transducer | |
US2300814A (en) | Indicating meter, particularly for radio navigational purposes | |
US2918843A (en) | System for mosaic cinematography | |
US2931037A (en) | Arrangement for radio direction finding | |
GB800131A (en) | Improvements relating to electromagnetic pick-offs | |
GB625591A (en) | Improvements in magnets | |
GB763886A (en) | Quadrantal error correcting means for magnetic antennas | |
GB627824A (en) | Improvements in sighting arrangements for guns and the like |