Fine positioning system using an inertial motor based on a mechanical amplifier
US8004153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2008 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Aug 21, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a fine positioning system using an inertial motor based on a mechanical amplifier that comprises a first amplified inertial sub-assembly including a mechanical amplifier, a piezoactive member and a countermass. A second relative drive sub-assembly includes a clamp and a clamped member attached to the first amplified inertial sub-assembly. Asymmetric excitation cycles of the first inertial sub-assembly generate impact forces and movements amplified in a driving direction (z), thus resulting in sliding and adhesion successions of the clamped member in the clamp in order to generate a relative translation movements of the points A and B relative to the point D. The mechanical amplifier increases the step size and reduces the supply inrush currents. Fine and dynamic positioning of the point B relative to the point D can be achieved with augmented strokes using the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.