Stepping motor damping circuit
US3965406A · kind A · utility
7Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1974 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Mar 8, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P8/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plural phase stepping motor control circuit in which damping in accomplished by energizing a previously energized phase prior to the expiration of the power cycle on a pair of other phases. The duration of the damping pulse is inversely proportional to the speed of operation. The logic involved allows for forward or reverse running. A sprocket latch circuit locks out spurious overshoot responses, such as may be caused by vibration, damaged tape, or other irrationality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.