Method and apparatus to compensate for cyclic load disturbances in a control system
US6597146B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Feb 18, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B5/01
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus for essentially eliminating cyclic disturbances in a motor control system, the method including identifying frequencies of undesirable components in a feedback signal that exceed a threshold level and generating a combined signal including sine wave components corresponding to each of the identified frequencies, delaying the combined signal to generate a plurality of identical but phase shifted combined signals, weighting each one of the delayed signals as a function of the magnitude of an instantaneous corrected signal which is the difference between a velocity error signal and a compensation signal and adding each of the weighted signals to generate the compensation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.