GB592729A - Improvements relating to signal control apparatus for use in electrical movement-control systems - Google Patents
Improvements relating to signal control apparatus for use in electrical movement-control systemsInfo
- Publication number
- GB592729A GB592729A GB13378/45A GB1337845A GB592729A GB 592729 A GB592729 A GB 592729A GB 13378/45 A GB13378/45 A GB 13378/45A GB 1337845 A GB1337845 A GB 1337845A GB 592729 A GB592729 A GB 592729A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fine
- signals
- motor
- coarse
- rotors
- 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
- G05D3/1436—Control of position or direction using feedback using an analogue comparing device with fine or coarse devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Position Or Direction (AREA)
Abstract
592,729. Correspondence control systems. SPERRY GYROSCOPE CO., Inc. May 28, 1945, No. 13378. Convention date, May 27, 1944. [Class 40 (i)] In a correspondence control.system of the type in which fine and coarse adjustment movements are transmitted, the two signals are amplified at the receiver by separate amplifiers and combined to actuate a follow-up servomotor, the coarse signal amplifier being biassed beyond cut-off so that for small deviations, only the "fine" signals are applied to the motor. Fig. 1 shows an arrangement in which controlling shaft 1 drives the rotor of "coarse" selsyn transmitter 3 directly, and the motor of " fine " transmitter 4 through step up gears 5. The rotors of the respective receivers 10 and 11 are similarly geared together. Signals from the motor 13 of receiver 10 are applied to valve 15, which is biassed so that it only conducts when they exceed a predetermined value. Signals from rotor 14 of receiver 11 are amplified by valve 16 which is provided with negative current feedback. The voltages appearing at the anodes of the valves are plotted with respect to angular displacement between rotors 2 and 13 in Fig. 2, while Fig. 3 shows the voltage applied to the primary of transformer 25, which is connected between the anodes of the valves. Transformer 25 feeds phase sensitive amplifier 28 which provides an output dependent in phase or polarity on the phase of the input voltage, so that the associated motor 33 drives the follow-up shaft and the rotors of selsyns 10 and 11 into correspondence with the transmitter. The ratio of the gears coupling the two selsyn systems is such that when the displacement is in the order of 180 degrees the fine signal is in the sense to correct the displacement. Also the coarse signal amplifier output is always greater than that of the fine for any given deviation. The two valves may be replaced by a twin tube and may be any multi-electrode type.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US592729XA | 1944-05-27 | 1944-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB592729A true GB592729A (en) | 1947-09-26 |
Family
ID=22021920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13378/45A Expired GB592729A (en) | 1944-05-27 | 1945-05-28 | Improvements relating to signal control apparatus for use in electrical movement-control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB592729A (en) |
-
1945
- 1945-05-28 GB GB13378/45A patent/GB592729A/en not_active Expired
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