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Current Sensorless Regulation for Converters via Integral Fuzzy Control
Kuang-Yow LIAN Hui-Wen TU Chi-Wang HONG
Publication
IEICE TRANSACTIONS on Electronics
Vol.E90-C
No.2
pp.507-514 Publication Date: 2007/02/01 Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.2.507 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: T-S fuzzy system, observer-based control, output regulation, buck converter, separation principle,
Full Text: PDF(397.8KB)>>
Summary:
In this paper, we propose an integral-type T-S fuzzy control scheme to deal with the regulation problem of buck converters without current sensors. This current sensorless control of converters provides the output voltage to achieve zero steady-state error and is with high robust performance. The stability of the overall closed-loop system is rigorously analyzed by using Lyapunov's method. Based on an appropriate assumption, the separation principle can still succeed in the control problems. Hence, the controller and observer gains can be separately obtained by solving LMIs via Matlab's toolbox. The observer-based controller is realized with Simulink and digital signal processors (DSPs). The simulation and experimental results verify the feasibility of the proposed schemes and show the satisfactory performance for the power converters.
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