Method and apparatus for energizing rotation-translation converters
US6462497B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2001 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/40
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A system for controlling an assembly of an electrical motor and a rotation-translation converter is provided. The rotation-translation converter is connected to the electrical motor. The electrical motor is energized with a predetermined current for obtaining a torque to overcome an internal friction of the rotation-translation converter. The current is increased until the electrical motor provides a total torque. The total torque is converted by the rotation-translation converter into a predetermined force on an object or into a displacement of the object. The object is moveable by the rotation-translation converter. The system may also reduce the current through the electrical motor after reaching the predetermined force to a predetermined current value. Under this predetermined current value, the predetermined force on the object remains substantially equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.