Control circuit for stepper motor
US4417189A · kind A · utility
8Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1982 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Jan 29, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P8/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for a stepping motor includes a source of pulses at a first frequency which is applied to the stepping motor. In response to a gate signal, the circuit gradually increases the rate of pulses at the stepping motor. After reaching a predefined maximum pulse rate, the pulse remains at a constant rate for some time and then gradually decreases until reaching said first rate where it remains until another gate signal occurs. As such, the motor runs at one speed, accelerates to a second speed and remains there for a time and then decelerates to said one speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.