GB1142194A - Digital-to-analogue converter - Google Patents
Digital-to-analogue converterInfo
- Publication number
- GB1142194A GB1142194A GB25463/65A GB2546365A GB1142194A GB 1142194 A GB1142194 A GB 1142194A GB 25463/65 A GB25463/65 A GB 25463/65A GB 2546365 A GB2546365 A GB 2546365A GB 1142194 A GB1142194 A GB 1142194A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resolver
- shaft
- angle
- rotor
- june
- 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
- G05D3/20—Control of position or direction using feedback using a digital comparing device
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
- H03M1/74—Simultaneous conversion
- H03M1/742—Simultaneous conversion using current sources as quantisation value generators
- H03M1/745—Simultaneous conversion using current sources as quantisation value generators with weighted currents
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Theoretical Computer Science (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
1,142,194. Digital - analogue converters. SPERRY RAND CANADA Ltd. 15 June, 1966 [16 June, 1965], No. 25463/65. Heading G4H. The angle through which it is required to rotate a shaft 32 is stored in binary coded form in a register 6, the outputs from all but the two most significant stages of which control switches 7-10 to selectively connect resistances 2-5 in series with resistances 21 or 22 which are in parallel so that the sine and cosine of the stored angle are represented by the A.C. signals on leads 15 and 20 respectively. The signals are applied to the coils of a resolver 24, the two most significant bits in the register 6 being fed to a quadrant switching circuit 23 so that the outputs on the leads 15, 20 are applied to the appropriate coils of resolver 24. The alternating magnetic field produced by the energized windings induces a voltage in a rotor winding 29 of the resolver which is applied to a servomotor 31 to drive the rotor via the shaft 32 to an angular position in which the voltage induced in the rotor is zero, i.e. when the shaft 32 has rotated through an angle represented by binary coded input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25463/65A GB1142194A (en) | 1965-06-16 | 1965-06-16 | Digital-to-analogue converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25463/65A GB1142194A (en) | 1965-06-16 | 1965-06-16 | Digital-to-analogue converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1142194A true GB1142194A (en) | 1969-02-05 |
Family
ID=10228091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25463/65A Expired GB1142194A (en) | 1965-06-16 | 1965-06-16 | Digital-to-analogue converter |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1142194A (en) |
-
1965
- 1965-06-16 GB GB25463/65A patent/GB1142194A/en not_active Expired
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