Mechanism for positioning an output member
US4680524A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Apr 15, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P8/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to a mechanism for positioning an output member of a mechanical system and in particular a mechanical system that has backlash present. The mechanism has a step motor, regulated by control means, connected to the output member by a mechanical transmission. The control means delivers units of electrical energy to the step motor in response to a number of steps specified to be moved. The control means also has means for detecting whether the step to be performed by the step motor is a single remaining step or single step only. The control means responds to detection of the single remaining step or detection of the single step only by applying a unit of energy to the step motor at a rate that is substantially slower than the rate that would be applied for the other steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.