GB1233275A - - Google Patents
Info
- Publication number
- GB1233275A GB1233275A GB1233275DA GB1233275A GB 1233275 A GB1233275 A GB 1233275A GB 1233275D A GB1233275D A GB 1233275DA GB 1233275 A GB1233275 A GB 1233275A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- error
- signals
- airspeed
- oct
- 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, 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
-
- 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
- G05D1/04—Control of altitude or depth
- G05D1/06—Rate of change of altitude or depth
- G05D1/0607—Rate of change of altitude or depth specially adapted for aircraft
- G05D1/0615—Rate of change of altitude or depth specially adapted for aircraft to counteract a perturbation, e.g. gust of wind
- G05D1/063—Rate of change of altitude or depth specially adapted for aircraft to counteract a perturbation, e.g. gust of wind by acting on the motors
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)
- Feedback Control In General (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1,233,275. Automatic speed control. BODENSEEWERK GERATETECHNIK G.m.b.H. Oct.9, 1969 [Oct.10, 1968], No.49619/69. Heading G3R. The airspeed of an aircraft is controlled by a system including an amplifier with a non-linear characteristic. In one type of arrangement, an error signal formed by comparing the set speed with the actual speed is fed into an amplifier which is more sensitive to positive signals than negative signals. This system may be used to prevent stalling during landing. In other embodiments, the amplifier gain is arranged to be greater for large error signals, in order than "hunting"should be avoided. This may be done by using a multiplier, to one input of which the error signal is fed, and to the other input there is applied the sum of the error and a constant signal. Threshold and limiting circuits may also be included. The airspeed may be measured as a function of the velocity head or angle of attack.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681802217 DE1802217A1 (en) | 1968-10-10 | 1968-10-10 | Speed regulator for aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1233275A true GB1233275A (en) | 1971-05-26 |
Family
ID=5710146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1233275D Expired GB1233275A (en) | 1968-10-10 | 1969-10-09 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1802217A1 (en) |
| FR (1) | FR2020304A7 (en) |
| GB (1) | GB1233275A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2465879A1 (en) * | 1979-09-21 | 1981-03-27 | Lucas Industries Ltd | FUEL FLOW HYDROMECHANICAL REGULATOR INSTALLATION FOR A GAS TURBINE ENGINE COMPRISING A PHASE ADVANCE CIRCUIT |
| GB2141268A (en) * | 1983-05-04 | 1984-12-12 | Diesel Kiki Co | Engine speed control |
| GB2237899A (en) * | 1989-11-10 | 1991-05-15 | Fokker Aircraft Bv | Automated approach speed control for an airplane |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1555492A (en) * | 1976-09-15 | 1979-11-14 | Standard Telephones Cables Ltd | Process controller |
| DE3023350A1 (en) * | 1980-06-21 | 1982-01-14 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTRONIC CONTROL DEVICE FOR THE SPEED CONTROL OF AN INTERNAL COMBUSTION ENGINE WITH AUTO IGNITION |
-
1968
- 1968-10-10 DE DE19681802217 patent/DE1802217A1/en active Pending
-
1969
- 1969-10-09 FR FR6934477A patent/FR2020304A7/fr not_active Expired
- 1969-10-09 GB GB1233275D patent/GB1233275A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2465879A1 (en) * | 1979-09-21 | 1981-03-27 | Lucas Industries Ltd | FUEL FLOW HYDROMECHANICAL REGULATOR INSTALLATION FOR A GAS TURBINE ENGINE COMPRISING A PHASE ADVANCE CIRCUIT |
| GB2141268A (en) * | 1983-05-04 | 1984-12-12 | Diesel Kiki Co | Engine speed control |
| GB2237899A (en) * | 1989-11-10 | 1991-05-15 | Fokker Aircraft Bv | Automated approach speed control for an airplane |
| US5078345A (en) * | 1989-11-10 | 1992-01-07 | Fokker Aircraft B.V. | Automated approach speed control for an airplane |
| GB2237899B (en) * | 1989-11-10 | 1994-05-11 | Fokker Aircraft Bv | Automated approach speed control for an airplane |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1802217A1 (en) | 1970-05-14 |
| FR2020304A7 (en) | 1970-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |