GB1428908A - North seeking gyro pendulum - Google Patents
North seeking gyro pendulumInfo
- Publication number
- GB1428908A GB1428908A GB4685974A GB4685974A GB1428908A GB 1428908 A GB1428908 A GB 1428908A GB 4685974 A GB4685974 A GB 4685974A GB 4685974 A GB4685974 A GB 4685974A GB 1428908 A GB1428908 A GB 1428908A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gyro
- gyros
- tape
- axis
- gyro unit
- 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
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/02—Rotary gyroscopes
- G01C19/34—Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes
- G01C19/38—Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
1428908 Automatic control of attitude BODENSEEWERK GERATETECHNIK GmbH 29 Oct 1974 [8 Dec 1973] 46859/74 Heading G3R [ Also in Division G1] A north-seeking gyro pendulum comprises a .gyro unit within a main casing 12 suspended by a tape 10 and having a north seeking gyro directing torque acting thereon, pick-off means for producing a signal indicative of the azimuth deflection of the gyro unit from a tape centre position, and a torque motor 30 to which the signal is applied via an amplifier 24. The gyro unit 12 comprises a pair of gyros having mutually inclined spin axes 34, 36, the gyros having, in use, equal angular momenta and being pivoted about vertical axes 42, 44, the gyros being coupled together to carry out equal and opposite rotational movements and being resiliently restrained to a rest position, the period of the azimuth oscillations of the gyro unit being equal to the period thereof about the angle bisector of the axes 34, 36. The gyros are interconnected, in the embodiment shown, by a linkage 48 comprising lever arms 50, 52 fixed, respectively to the pivot points of gyro casings 38, 40, a link 54 being pivotally connected to the free ends thereof. One end of arm 52 is coupled to an intermediate point between the ends of tensioned spring means 58 fixed to the main casing 12. A mathematical treatment shows that with suitable choice of the values of various parameters the two periods of oscillation may be equalized and "rectifier effect" problems eliminated i.e. problems resulting from the different moments of inertia of a gyro unit about the gyro spin axis and an axis at right angles to the spin axis and the tape axis.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2361277A DE2361277A1 (en) | 1973-12-08 | 1973-12-08 | NORTH LOOKING PENDULUM |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1428908A true GB1428908A (en) | 1976-03-24 |
Family
ID=5900284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4685974A Expired GB1428908A (en) | 1973-12-08 | 1974-10-29 | North seeking gyro pendulum |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2361277A1 (en) |
FR (1) | FR2254011B1 (en) |
GB (1) | GB1428908A (en) |
SE (1) | SE7408387L (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3322632A1 (en) * | 1983-06-23 | 1985-01-10 | Anschütz & Co GmbH, 2300 Kiel | SELF-NORDING COURSE AND LOCATION REFERENCE DEVICE FOR VEHICLES |
CN104931029B (en) * | 2015-04-30 | 2017-10-27 | 长安大学 | Northern measuring method is sought in a kind of two-position revolution based on locked rotor torque pattern gyroscope total station |
-
1973
- 1973-12-08 DE DE2361277A patent/DE2361277A1/en active Pending
-
1974
- 1974-06-26 SE SE7408387A patent/SE7408387L/xx unknown
- 1974-10-28 FR FR7440607A patent/FR2254011B1/fr not_active Expired
- 1974-10-29 GB GB4685974A patent/GB1428908A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE7408387L (en) | 1975-06-09 |
FR2254011A1 (en) | 1975-07-04 |
DE2361277A1 (en) | 1975-06-12 |
FR2254011B1 (en) | 1978-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |