GB2375884B - Electro-active devices - Google Patents
Electro-active devicesInfo
- Publication number
- GB2375884B GB2375884B GB0112620A GB0112620A GB2375884B GB 2375884 B GB2375884 B GB 2375884B GB 0112620 A GB0112620 A GB 0112620A GB 0112620 A GB0112620 A GB 0112620A GB 2375884 B GB2375884 B GB 2375884B
- Authority
- GB
- United Kingdom
- Prior art keywords
- minor axis
- electro
- around
- active
- curved
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
- H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
- H10N30/2041—Beam type
- H10N30/2042—Cantilevers, i.e. having one fixed end
- H10N30/2043—Cantilevers, i.e. having one fixed end connected at their free ends, e.g. parallelogram type
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
- H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
- H10N30/2041—Beam type
- H10N30/2042—Cantilevers, i.e. having one fixed end
Landscapes
- Gyroscopes (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The device has a layered piezoelectric structure extending along a minor axis 36 which is curved, for example in a helix around a major axis 37. The structure comprises successive portions extending around said minor axis and arranged with electrodes to bend around the minor axis 36 such that bending of the successive portions 35 is concomitant with rotation of the electro-active structure about the minor axis 36 adding incrementally along the minor axis 36. The structure generates displacement out of the local plane in which the minor axis is curved. The layers of the structure are arranged at an angle a of less than 90{ to the minor axis 36 (see fig 5). The structure may be corrugated 141. The structure may be a continuous electro-active member extending along and curving around the minor axis 35, for example helically to form a helical helix. Alternatively, the electro-active structure may be a plurality of discrete elements connected together. The device may be used as a driver, a sensor or a generator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0112620A GB2375884B (en) | 2001-05-23 | 2001-05-23 | Electro-active devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0112620A GB2375884B (en) | 2001-05-23 | 2001-05-23 | Electro-active devices |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0112620D0 GB0112620D0 (en) | 2001-07-18 |
GB2375884A GB2375884A (en) | 2002-11-27 |
GB2375884B true GB2375884B (en) | 2005-01-05 |
Family
ID=9915193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0112620A Expired - Fee Related GB2375884B (en) | 2001-05-23 | 2001-05-23 | Electro-active devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2375884B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2376795B (en) * | 2001-06-20 | 2005-03-09 | 1 Ltd | Electro-mechanical control using an electro-active device |
GB2376796B (en) * | 2001-06-20 | 2004-12-15 | 1 Ltd | Motors and generators using an electro-active device |
GB2405256B (en) * | 2001-06-20 | 2005-08-31 | 1 Ltd | Electro-active device |
GB0115074D0 (en) * | 2001-06-20 | 2001-08-15 | 1 Ltd | Sensors using an electro-active device |
GB0201458D0 (en) * | 2002-01-23 | 2002-03-13 | 1 Ltd | Curved electro-active actuators |
GB0308810D0 (en) * | 2003-04-16 | 2003-05-21 | 1 Ltd | Recurved electro-active actuators |
CN100555696C (en) * | 2005-02-15 | 2009-10-28 | 诺基亚公司 | Be used for little mobile piezoelectric actuator component |
DE102005026717B4 (en) * | 2005-06-09 | 2016-09-15 | Epcos Ag | Piezoelectric multilayer component |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001047041A2 (en) * | 1999-12-21 | 2001-06-28 | 1... Limited | Electro-active devices |
-
2001
- 2001-05-23 GB GB0112620A patent/GB2375884B/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001047041A2 (en) * | 1999-12-21 | 2001-06-28 | 1... Limited | Electro-active devices |
Also Published As
Publication number | Publication date |
---|---|
GB2375884A (en) | 2002-11-27 |
GB0112620D0 (en) | 2001-07-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20110523 |