Variable motor drive system for a reservoir with circulating fluid
US8226374B2 · kind B2 · utility
7Cited by
36References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2201/5046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A motor drive for an electric motor of a variable fluid circulating system includes a processing module and a power module. The processing module receives a signal profile and generates a control signal based on the signal profile. A power module generates a carrier signal based on the control signal and a direct current (DC) voltage. The power module pulse width modulates the carrier signal to generate a drive signal in the electric motor that matches the signal profile. The power module powers the electric motor based on the drive signal to adjust injection of a fluid into a reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.