GB664515A - Improvements in or relating to indicating or controlling devices - Google Patents
Improvements in or relating to indicating or controlling devicesInfo
- Publication number
- GB664515A GB664515A GB5211/49A GB521149A GB664515A GB 664515 A GB664515 A GB 664515A GB 5211/49 A GB5211/49 A GB 5211/49A GB 521149 A GB521149 A GB 521149A GB 664515 A GB664515 A GB 664515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- rate
- slider
- potentiometer
- measuring
- 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
- 239000002775 capsule Substances 0.000 abstract 1
- 230000003412 degenerative effect Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 230000001052 transient effect 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
- G05D1/08—Control of attitude, i.e. control of roll, pitch, or yaw
- G05D1/0808—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft
- G05D1/0816—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted for aircraft to ensure stability
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)
- Gyroscopes (AREA)
Abstract
664,515. Electric indicating and control systems. SMITH & SONS (ENGLAND), Ltd., S. Feb. 17, 1950. [Feb. 25, 1949] No. 5211/49. Class 40 (i). [Also in Groups XXXV and XXXVI] An apparatus for generating an electrical signal in accordance with the instantaneous value of an unknown mechanical quantity comprises' an instrument generating a first signal measuring the unknown, but lagging behind its variations, an instrument generating a second signal measuring the rate of change of the unknown with zero lag, integrating means generating a third signal which is a transient integral of the second signal with a time constant equal to the response time constant of the first instrument, and means whereby multiples of the first and third signals are added to produce a fourth signal measuring the unknown quantity without lag. In Fig. 1 a rate of climb instrument 1 comprises a reservoir 41, with a leak 42 to the atmosphere, connected to a pressure capsule 43 which deflects through a linkage the slider 49 of a D.C. energised centre tapped potentiometer 50 to produce a lagging signal measuring the rate of climb. A vertical accelerometer 3 comprises a mass 51 suspended by springs 52, 53, whose vertical movements deflect the slider of a centre tapped potentiometer 57 which is D.C. energised through ganged equal variable resistances 59, 60 in series with each leg. The resultant signal measuring the rate of change of the rate of climb is applied to an integration circuit comprising a condenser 62 in series with a variable resistance 61, adjustable to give the circuit a similar time constant to the initial measuring circuit, whose signal is added to the signal across the integrator condenser to develop a rate of climb signal without lag, which operates an indicator or controlled mechanism 5. In Fig. 2 a pitch indicator pendulum 6 and a rate of turn gyro 7 of an automatic pilot system such as that describedin Specification 6 11,037, [Group XXXV], operate the sliders of centretapped D.C. fed potentiometers 95, 76 to respectively develop a lagging pitch signal and an instantaneous rate of turn signal which is fed through a variable resistance 81 to the grid of an amplifying valve 83 operating as a Miller integrator. The anode is connected to the grid through a condenser 82, to the H.T. supply through anode resistance 85, and through potentiometer 86 to the slider of a potentiometer 87 across the supply which is adjusted so that its slider is at anode-potential when the slider of potentiometer 76 is central. The integrator is adjusted by varying resistance 81 so that its time constant is the same as that of the pitch indicator; and the lagging signal of the latter is added to the integrated rate of turn signal and the combined signal measuring the instantaneous pitch without lag together with the rate of turn signal operates a servoamplifier 101 to control a servomotor 107 which drives an elevator 112 and a tachometer generator 108 which feeds back a degenerative anti-hunt signal to the input in opposition to the rate of turn input signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5211/49A GB664515A (en) | 1949-02-25 | 1949-02-25 | Improvements in or relating to indicating or controlling devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5211/49A GB664515A (en) | 1949-02-25 | 1949-02-25 | Improvements in or relating to indicating or controlling devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB664515A true GB664515A (en) | 1952-01-09 |
Family
ID=9791790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5211/49A Expired GB664515A (en) | 1949-02-25 | 1949-02-25 | Improvements in or relating to indicating or controlling devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB664515A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1023617B (en) * | 1955-10-27 | 1958-01-30 | Sperry Rand Corp | Method and device for measuring vertical speed |
DE1110922B (en) * | 1958-04-08 | 1961-07-13 | Rolls Royce | Device for determining a correct vertical speed signal |
DE1155273B (en) * | 1959-03-24 | 1963-10-03 | David Scott Little | Variometer |
DE1264123B (en) * | 1963-11-05 | 1968-03-21 | Kollsman Instr Corp | Vertical speed display instrument |
-
1949
- 1949-02-25 GB GB5211/49A patent/GB664515A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1023617B (en) * | 1955-10-27 | 1958-01-30 | Sperry Rand Corp | Method and device for measuring vertical speed |
DE1110922B (en) * | 1958-04-08 | 1961-07-13 | Rolls Royce | Device for determining a correct vertical speed signal |
DE1155273B (en) * | 1959-03-24 | 1963-10-03 | David Scott Little | Variometer |
DE1264123B (en) * | 1963-11-05 | 1968-03-21 | Kollsman Instr Corp | Vertical speed display instrument |
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