End of stroke detection for electromagnetic pump
US8657587B2 · kind B2 · utility
2Cited by
46References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Feb 25, 2014 |
| Priority date | — |
| Expiry date | Sep 10, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0403
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Detection of end of stroke for an electromagnetic pump may be performed using, for example, a calculated first flux derivative. Further, inductance of a coil that can be energized to produce a pump stroke may be calculated (e.g., the pump may include an actuator moveable in response to the energization of the coil). For example, the inductance may be calculated as a function of sense coil current and source electrical potential when the actuator is not moving for use in determining position of the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.