High-powered actuators and actuating systems for extended range and precise positioning
US7511403B2 · kind B2 · utility
1Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 2006 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Jul 15, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric motor (PEM) is driven with loosely coupled inductors 24 and switching amplifier having a pulse width modulator 18, gate driver circuit 21 and two pairs of power mosfets 210, 212 and 220, 222. Energy stored in the PEM at the end of one cycle is transferred to a capacitor 202 for use in a subsequent cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.