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Robust Cascade Control of Electric Motor Drives Using Dual Reduced-Order PI Observer.
- Source :
- IEEE Transactions on Industrial Electronics; Jun2015, Vol. 62 Issue 6, p3672-3682, 11p
- Publication Year :
- 2015
-
Abstract
- This paper addresses the problem of preserving the nominal performance of a conventional cascade controller for electric motor drives in the presence of parameter uncertainties and external disturbances. Practical reduced-order proportional-integral (PI) observers are incorporated with predesigned PI controllers in order to enhance the robust performance of current and speed controllers. A unified analysis based on the singular perturbation theory is presented to confirm the desired approximation of the augmented system with the PI observers to the nominal closed-loop system. The validity of the proposed dual observer-based control scheme is tested via computer simulations and experiments using a dc motor system. Both results verify that the proposed controller can be used effectively to recover the nominal performance of the conventional cascade scheme for electric motor drives. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 62
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 102615697
- Full Text :
- https://doi.org/10.1109/TIE.2014.2374571