Wide frequency range electromechanical actuator
US7355325B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2006 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Jun 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromechanical motor (1), using at least two bimorph, monomorph or multimorph electromechanical actuating elements (6) interconnected by a common actuator backbone (5) is disclosed. The actuating elements (6) are controllable in both a longitudinal direction (L), i.e. in the main extension direction of the actuating element (6), and a flexural direction, i.e. bending of the actuating element (6), separately. The different actuating elements (6) can be controlled individually as well. The actuator (3) dimensions are preferably selected to resonance frequencies in vicinity of a certain frequency. The actuating elements (6) are provided with interaction portions (7) at which any contact between the actuator and a body (2) to be moved is made. In order to operate well both in fine-positioning and resonant motion, the interaction portions (7) are arranged to partially suppress the transfer of acoustic waves between the actuating elements (6) and the body (2) to be moved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.