GB669476A - Improvements in or relating to automatic control systems - Google Patents
Improvements in or relating to automatic control systemsInfo
- Publication number
- GB669476A GB669476A GB4524/48A GB452448A GB669476A GB 669476 A GB669476 A GB 669476A GB 4524/48 A GB4524/48 A GB 4524/48A GB 452448 A GB452448 A GB 452448A GB 669476 A GB669476 A GB 669476A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rate
- output
- pick
- dependent
- craft
- 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
- G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
- G05D1/04—Control of altitude or depth
- G05D1/042—Control of altitude or depth specially adapted for aircraft
- G05D1/044—Control of altitude or depth specially adapted for aircraft during banks
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)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Toys (AREA)
- Guiding Agricultural Machines (AREA)
Abstract
669,476. Automatic control systems. SMITH & SONS (ENGLAND), Ltd., S. Feb. 2, 1949 [Feb. 16, 1948], No. 4524/48. Class 38 (iv). In a system for automatically varying a condition in accordance with the rate of change of a variable, a force dependent on said rate of change is applied to a movable member and a signal dependent on displacement of the movable member is applied to an amplifier the output of which controls the condition, a force dependent both on the rate of change of the condition and the differential with respect to time of said displacement signal being applied to the movable member in opposition to the first-mentioned force. In an aircraft automatic steering system, Fig. 4, a rate-of-turn gyro 1 on the craft is restrained by a torque motor 3 and is associated with a resistance potentiometer type pick-off 2, supplied from an A.C. source, giving an output which controls, through an amplifier 5, a servomotor 6 operating the rudder of the craft. With a switch 11 in its lower position, the A.C. output of a tachometer generator 7 is combined with the A.C. output of a datum setting potentiometer 8 to energize torque motor 3 which opposes the precessional torque of the gyro so that rate of turn of the craft is maintained at the chosen datum value. To reduce hunting a differential function of the pick-off signal is derived by a circuit 4 and injected into the energizing circuit of the torque motor. When it is desired to fly a straight course switch 11 is moved to the position shown to substitute for the datum setting potentiometer 8 a course monitor 9, e.g. a compass repeater associated with a potentiometer pick-off, giving an A.C. output dependent on deviation from course. To facilitate selection of the straight course to be flown the compass repeater may be disengageable from its pick-off. Application to control of an aircraft about its roll and pitch axes is referred to Specifications 611,037, 618,003, [Group XXXVIII], 617,240 and 669,471 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4524/48A GB669476A (en) | 1948-02-16 | 1948-02-16 | Improvements in or relating to automatic control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4524/48A GB669476A (en) | 1948-02-16 | 1948-02-16 | Improvements in or relating to automatic control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB669476A true GB669476A (en) | 1952-04-02 |
Family
ID=9778813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4524/48A Expired GB669476A (en) | 1948-02-16 | 1948-02-16 | Improvements in or relating to automatic control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB669476A (en) |
-
1948
- 1948-02-16 GB GB4524/48A patent/GB669476A/en not_active Expired
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