GB800781A - Improvements in or relating to sine-cosine magslip resolver arrangements - Google Patents
Improvements in or relating to sine-cosine magslip resolver arrangementsInfo
- Publication number
- GB800781A GB800781A GB2369055A GB2369055A GB800781A GB 800781 A GB800781 A GB 800781A GB 2369055 A GB2369055 A GB 2369055A GB 2369055 A GB2369055 A GB 2369055A GB 800781 A GB800781 A GB 800781A
- Authority
- GB
- United Kingdom
- Prior art keywords
- input
- resolver
- resistor
- amplifier
- valve
- 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
- 238000004804 winding Methods 0.000 abstract 4
- 238000010079 rubber tapping Methods 0.000 abstract 2
- RQTDRJMAUKHGHV-UHFFFAOYSA-N P.P.I Chemical compound P.P.I RQTDRJMAUKHGHV-UHFFFAOYSA-N 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G5/00—Elevating or traversing control systems for guns
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
- G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
- G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction
- G01S7/12—Plan-position indicators, i.e. P.P.I.
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/22—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating trigonometric functions; for conversion of co-ordinates; for computations involving vector quantities
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Analysis (AREA)
- Remote Sensing (AREA)
- Algebra (AREA)
- Radar, Positioning & Navigation (AREA)
- Mathematical Optimization (AREA)
- Computer Networks & Wireless Communication (AREA)
- Pure & Applied Mathematics (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
800,781. Cathode-ray tube circuits; sawtooth generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 22, 1956 [Aug. 17, 1955], No. 23693/55. Classes 40 (6) and 40(7). Relates to a magslip resolver circuit for resolving an input timebase into sine and cosine components for application to the X and Y deflection members of a radar P.P.I. cathoderay tube display in which the input waveform is applied to the input coil 3 of the resolver through an amplifier 12, a feedback voltage produced by a winding 4 tightly coupled to the input winding 3 being applied to the input of amplifier 12 to linearize the waveform. According to the present invention the linearity is further improved by generating a further feedback voltage proportional to the difference between first and second voltages proportional respectively to the rate of change of the magnetising force in the resolver and the rate of change of the flux density in the resolver. The invention is described as applied to an arrangement in which the input coil is a stator coil, the sine and cosine outputs being derived from crossed rotor coils 1 and 2. As shown, the first voltage is produced by connecting a resistor 13 in series with the input coil 3 and applying the voltage across said resistor to the grid of a valve 15 through a differentiating circuit comprising capacitor 14 and the input impedance of valve 15. The second voltage is applied to the grid of a valve 16 and is derived from an adjustable tapping on a resistor 17<1> connected across the feedback coil 4. Valves 15 and 16 are connected as a differential amplifier and the difference output from the anode of valve 15 is applied through a cathode follower 17 and adjustable resistor 18 to the grid of the amplifier 12; a further output from the cathode follower 17 is applied as negative feedback to the input of valve 15. The linearity of the timebase waveform can be controlled by adjustment of resistor 18 and the tapping on resistor 17<1>. Any undesired quadrature field in the resolver is cancelled by a correction circuit comprising a high-gain amplifier 9 feeding a main quadrature stator winding 5 and fed from a feedback quadrature stator winding 6. This circuit operates in a similar manner to amplifier 12 but differs therefrom in that its input terminal is earthed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2369055A GB800781A (en) | 1955-08-17 | 1955-08-17 | Improvements in or relating to sine-cosine magslip resolver arrangements |
| FR1158491D FR1158491A (en) | 1955-08-17 | 1956-08-06 | Improvements to sine and cosine calculators of the electro-mechanical type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2369055A GB800781A (en) | 1955-08-17 | 1955-08-17 | Improvements in or relating to sine-cosine magslip resolver arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB800781A true GB800781A (en) | 1958-09-03 |
Family
ID=10199694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2369055A Expired GB800781A (en) | 1955-08-17 | 1955-08-17 | Improvements in or relating to sine-cosine magslip resolver arrangements |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1158491A (en) |
| GB (1) | GB800781A (en) |
-
1955
- 1955-08-17 GB GB2369055A patent/GB800781A/en not_active Expired
-
1956
- 1956-08-06 FR FR1158491D patent/FR1158491A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1158491A (en) | 1958-06-16 |
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