Method of determining duty ratio used for operational control of a solenoid
US4951468A · kind A · utility
9Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/325
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A duty ratio for operating a solenoid is determined by calculating a duty ratio in each of basic periods and determining an operational time for which the solenoid is to be operated within each of the basic periods, based on the calculated duty ratio. When the duty ratio is reduced to the extent that the operational time is shorter than a minimum possible time of operation of the solenoid, an operational time for which the solenoid is to be operated is determined within a new period composed of a plurality of consecutive basic periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.