Method and apparatus for controlling a motor
US4622499A · kind A · utility
29Cited by
25References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Feb 27, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/17
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An n-phase DC motor is controlled by converting a motor speed command signal generated from a programmed CPU to a motor drive signal and using this motor drive signal to apply DC power to a selected phase of the motor, the amount of applied DC power being a function of the value of the motor speed command signal. Signals representing the position and/or speed of the motor are supplied to the CPU from which the CPU detects speed errors. The speed command signal then is modified to speed up or slow down the motor so as to reduce the detected errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.