Generating device of phase current instruction value for alternating current servomotor and the generating method thereof
US5272424A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A generating device of a phase current instruction value for an A.C. servomotor and the generating method thereof, drives a synchronous A.C. servomotor. A sine wave, namely, a phase current instruction value for commutation of the A.C. servomotor driver can be generated by receiving as an interrupt the detection signal of a commutation sensor which detects the reverse electromotive force of the a motor at the microprocessor. The pulse position of the present since wave is. The pulse position of present sine wave is determined by the interrupt signal of the microprocessor. The motor is driven and controlled by converting by way of a D-A converter to an analog signal the data for generating a sine wave according to the increase or decrease of an encoder pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.