Observer-compensator for an electric motor system
US5587636A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1995 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Feb 24, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41148
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a motor system controlled by a central processing unit, an observer-compensator is provided which modifies the command signal being applied to the actual motor system to be controlled. The observer-compensator comprises in the observer portion, a simulated ideal motor system without disturbance forces. The velocity output of the simulated ideal motor system is compared to the velocity output of the actual system to produce a velocity error signal (Verr). A feedback compensator in the simulated ideal motor system is adjusted to compensate for the velocity error signal without disturbance forces. After disturbance forces are introduced into the actual motor system, a comparison of the output of the actual motor system with the output of the simulated ideal motor system produces a position error signal (P.sub.D --P.sub.A) which is applied to the compensator portion of the observer-compensator. The compensator portion comprises a disturbance reconstruction device which is coupled to the position error signal. The disturbance reconstruction device is adjusted until the position error signal is compensated for in the simulated ideal motor system and then the output of the reconstructi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.