Plugging and plugging override control apparatus
US4529919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1983 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Jan 5, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2220/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control system (28) is provided for controlling the supply of power to a motor (12) having an armature (34) and a plugging diode (38) connected across the armature (34), including a circuit (14) for producing direction command signals, a circuit (98) for generating digital motor power command signals, a circuit (16) for sensing a plugging condition and generating a plug signal, a microprocessor (46) for generating one of a plurality of pulse trains during typical plugging conditions and for automatically overriding the generation of the one pulse train and generating other of the plurality of pulse trains during special plugging conditions. By automatically providing the override feature during the special plugging conditions, the disadvantage of manual override in prior control systems is obviated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.