Piezoelectric actuator control for high rate of operation
US9455395B2 · kind B2 · utility
0Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2014 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Jun 5, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/2065
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Described herein are methods for controlling a piezoelectric element, for example, for use in a fuel injector, safely and efficiently at higher frequencies without causing damage to the fuel injector due to excessive heating. Methods incorporating features of the present invention can utilize waveform generation, waveform scaling and power amplification to drive a piezoelectric element. In some embodiments, various operating conditions are utilized to determine a scaling value which is compared to a target value to determine the level of scaling to be utilized with a generated waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.