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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전기학회 International Journal of Control Automation and Systems International Journal of Control Automation and System Vol.4 No.4
- 발행연도
- 2006.8
- 수록면
- 414 - 427 (14page)
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초록· 키워드
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This paper presents an adaptive feedback linearization control scheme for induction motors with simultaneous variation of rotor and stator resistances. Two typical modeling techniques, rotor flux model and stator flux model, have been developed and successfully applied to the controller design and adaptive observer design, respectively. By using stator fluxes as states, over-parametrization in adaptive control can be prevented and control strategy can be developed without the need of nonlinear transformation. It also decrease the relative degree for the flux modulus by one, thereby, yielding a simple control algorithm. However, when this method is used for flux observer, it cannot guarantee the convergence offlux. Similarly, the rotor flux model may be appropriate for observers, but it is not so for adaptive controllers. In addition, if these two existing methods are merged into overall adaptive control system, it brings about structural complexies. In this paper, we did not use these two medeling methods, and opted for the airgap flux model which takes on only the positive aspects of the existing rotor flux model and stator flux model and prevents structural complexity from occuring. Through theoretical analysis by using Lyapunov's direct method, simulations, and actual experiments, it is shown that stator and rotor resistances converge to their actual values, flux is well estimated, and torque and flux are controlled independently with the measurements of rotor speed, stator currents, and stator voltages. These results were achieved under the persistent excitation condition, which is shown to hold in the simulation.
목차
Abstract
1. INTRODUCTION
2. MODELING AND ERROR DYNAMICS DERIVATION
3. DESIGN OF THE TORQUE AND FLUX CONTROLLER AND ERROR DYNAMICS
4. ADAPTIVE LAW DESIGN AND CONVERGENCE ANALYSIS
5. SIMULATIONS
6. EXPERIMENTS
7. CONCLUSION
REFERENCES
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