Electronic CAM compensation of pressure change of servo controlled pumps
US5971714A · kind A · utility
27Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | May 27, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2203/0213
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The construction and operation of the control of this invention is designed to minimize pressure changes at pump changeover by sampling pump pressure characteristics for each pump cycle, calculating a compensating motion profile and applying the profile to the motor which drives the pump. This control can be used with any pump which has the following characteristics: positive displacement, repeating cycle characteristics, rotary motor drive and an output pressure cycle curve which never falls to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.