Current profile method and apparatus for controlling gate operation
US6650076B1 · kind B1 · utility
4Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2002 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Oct 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/2628
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus for moving a gate a distance in a predetermined period of time. In one embodiment the current load for an electric motor to move a gate is first measured to determine whether the gate's motion is being hindered or helped. A microprocessor then controls voltage supplied to the motor to enhance or retard the evolved power of the motor according to the load and the predetermined time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.