Closed-loop method and apparatus for controlling acceleration and velocity of a stepper motor
US5663624A · kind A · utility
20Cited by
15References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1992 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Mar 5, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P8/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A closed-loop method and apparatus for controlling acceleration and velocity of a stepper motor in which a motor shaft encoder is used to generate a signal proportional to shaft position. This signal is subtracted from the motor input signal to produce an error signal which is compared with a reference value. When the error is equal to the reference value the motor is stepped again. Between each step, the reference value is decreased if motor velocity is too high or increased if the motor velocity is too low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.