GB856826A - Improvements in or relating to servo systems - Google Patents
Improvements in or relating to servo systemsInfo
- Publication number
- GB856826A GB856826A GB28071/57A GB2807157A GB856826A GB 856826 A GB856826 A GB 856826A GB 28071/57 A GB28071/57 A GB 28071/57A GB 2807157 A GB2807157 A GB 2807157A GB 856826 A GB856826 A GB 856826A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifiers
- control
- outputs
- signals
- gains
- 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
- 238000012986 modification Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/0055—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements
- G05D1/0077—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots with safety arrangements using redundant signals or controls
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
856,826. Automatic control systems. SMITH & SONS (ENGLAND) Ltd., S. Sept. 5, 1958 [Sept. 5, 1957], No. 28071/57. Class 38 (4). In a servo-system in which signals dependent on a common control quantity are applied to a plurality of amplifiers each of which energizes a servomotor operating a common load, the transmission characteristic of each of a number of the amplifiers is controlled in dependence on a comparison between the output of that amplifier and a common reference value, In Fig. 1 control signals 2, e.g. derived from three similar attitude or rate gyros on an aircraft, are each applied through a separate pair of amplifiers 3 and 5 in cascade to operate electric servomotors 6. The three servomotors actuate a common load, e.g. an aircraft control surface,. through electrically - energized and torque - limiting clutches (not shown), and apply position and/or rate follow-up signals to the input of amplifiers 5. The mean or middle value of the outputs of amplifiers 5 is derived in each of three circuits 9 and any difference between the outputs of these circuits and the individual amplifier outputs is automatically eliminated by feeding back the differences through limiting demodulators 11 to control the gains of amplifiers 3. The differences are also applied through limiters 12 to the inputs of amplifiers 5 to eliminate drift errors. In a modification, in which limiters 12 are omitted, the output of one of the amplifiers 5 is also compared with each of the outputs of the other amplifiers 5 and the differences utilized to control the gain of the other amplifiers 5 through integrators. In this arrangement the integral of long-term components of the control signal is also applied to the input of the uncontrolled amplifier 5. In another modification the signals fed back from the servomotor to the inputs of amplifiers 5 are each amplified and the gains of amplifiers for this purpose are controlled in a manner similar to that in which the gains of amplifiers 3 are controlled. Design and testing of the apparatus to avoid undesirable operation of the systems is described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB28071/57A GB856826A (en) | 1957-09-05 | 1957-09-05 | Improvements in or relating to servo systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB28071/57A GB856826A (en) | 1957-09-05 | 1957-09-05 | Improvements in or relating to servo systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB856826A true GB856826A (en) | 1960-12-21 |
Family
ID=10269813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28071/57A Expired GB856826A (en) | 1957-09-05 | 1957-09-05 | Improvements in or relating to servo systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB856826A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1225965B (en) * | 1961-07-14 | 1966-09-29 | Smith & Sons Ltd S | Circuit arrangement, in particular for flight control systems of aircraft |
| DE1293491B (en) * | 1960-12-21 | 1969-04-24 | Smith & Sons Ltd S | Automatic control device in which several parallel control channels are provided for safety reasons |
-
1957
- 1957-09-05 GB GB28071/57A patent/GB856826A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1293491B (en) * | 1960-12-21 | 1969-04-24 | Smith & Sons Ltd S | Automatic control device in which several parallel control channels are provided for safety reasons |
| DE1225965B (en) * | 1961-07-14 | 1966-09-29 | Smith & Sons Ltd S | Circuit arrangement, in particular for flight control systems of aircraft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1340293A (en) | Load stability system | |
| GB1215251A (en) | Improvements in or relating to process controllers | |
| ES374761A1 (en) | Closed loop control system with automatic variation of its regulating feedback amplification | |
| GB856826A (en) | Improvements in or relating to servo systems | |
| GB1002304A (en) | Improvements in or relating to integrated error correcting systems | |
| GB1070938A (en) | Improvements in or relating to the correlation of signals | |
| US2714137A (en) | Stabilized amplifier | |
| GB1299582A (en) | D.c. amplifier assembly with drift correction | |
| GB926471A (en) | Improvements in or relating to servo systems | |
| GB1175509A (en) | Improvements in or relating to Variable Gain Fluidic Apparatus | |
| GB1296974A (en) | ||
| GB1288329A (en) | ||
| GB845600A (en) | Improvements in or relating to servo systems | |
| GB1344418A (en) | Operational amplifier circuit for servo control systems | |
| GB963134A (en) | Track guidance apparatus for aircraft | |
| GB1063972A (en) | Improvements in or relating to multiple input control system | |
| GB952223A (en) | Improvements in or relating to multi-signal common channel amplifiers | |
| GB1243298A (en) | Improvements in fluid-pressure control systems | |
| GB829740A (en) | Aircraft pitch-attitude control apparatus | |
| GB1181685A (en) | Control System | |
| GB1193785A (en) | Improvements in Variable Gain Fluidic Device | |
| GB791987A (en) | Navigation aid apparatus | |
| GB1111571A (en) | Differential current amplifier | |
| GB863811A (en) | Apparatus for controlling, indicating and/or recording the value of a variable condition | |
| GB887271A (en) | Improvements in or relating to control systems |