Smart material actuator adapted for resonant operation
US8621756B2 · kind B2 · utility
1Cited by
21References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Sep 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A smart material actuator having a fixed supporting member, mechanical web, actuating arm, and piezoelectric or smart material stack is disclosed, together with a sensor adapted to indicate the degree of motion of the actuating arms and controller adapted to allow safe operation of the actuator in resonant conditions. Methods of maintaining resonant operation, avoiding resonant operation, and adjusting resonant frequencies are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.