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A Robust Speed Controller With VSS Tuning Of Disturbance Cancellation For An Induction Motor Drive
Author(s) -
Liaw C.M.,
Chao K.H.,
Guo R.S.
Publication year - 2001
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1111/j.1934-6093.2001.tb00071.x
Subject(s) - control theory (sociology) , robustness (evolution) , electronic speed control , open loop controller , controller (irrigation) , robust control , induction motor , control engineering , computer science , engineering , control system , control (management) , voltage , closed loop , agronomy , biochemistry , chemistry , artificial intelligence , biology , electrical engineering , gene
A robust speed controller for an induction motor drive that achieves quantitative control and considers the effects of nonlinearities is presented in this paper. First, a two‐degree‐of‐freedom controller (2DOFC) is designed according to the estimated model for the nominal case and given speed specifications. Then, the control characteristics and limitations of the conventional robust controller are investigated. Accordingly, a modified robust speed controller based on disturbance cancellation is developed, wherein tuning of disturbance cancellation is performed via a variable structure system (VSS) controller. The estimated model mismatched error and its derivative are used as the driven inputs of the VSS controller. Greater robustness and flexibility in achieving a compromise between control effort and control performance can be achieved using the proposed controller. The effectiveness of the proposed controller is demonstrated by simulation and measured results.