Systems and methods for identifying end stops in a linear motor
US9991836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2016 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Oct 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/215
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods for operating linear motors, and for determining whether a linear motor has reached the end of its power and return strokes. In one embodiment, an electric drive controller of an ESP system monitors position signals received from the system's linear motor and determines transition time differentials, transition counts from the beginning of a stroke, elapsed stroke times and related parameters. If predetermined conditions relating to these parameters are met, the controller determines that the linear motor's mover has reached the end of its stroke. The controller therefore reverses the phase order of the drive's output power and thereby reverses the direction of the mover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.