DocumentCode :
1442417
Title :
Comments on "H/sub /spl infin// tracking design of uncertain nonlinear SISO systems: adaptive fuzzy approach" [with reply]
Author :
Hyung-Jin Kang ; Heejin Lee ; Mignon Park ; Bor-Sen Chen ; Lee, Chia-Han ; Chang, Yao-Chung
Author_Institution :
Dept. of Electron. Eng., Yonsei Univ., Seoul, South Korea
Volume :
6
Issue :
4
fYear :
1998
Firstpage :
605
Lastpage :
606
Abstract :
The objective of H/sub /spl infin// disturbance attenuation problem is to attenuate the effect of disturbance to the prescribed level and achieve performance robustness. Chen, Lee and Chang (Fuzzy Syst., vol.4, p.32-43, 1996) proposed an adaptive fuzzy H/sub /spl infin// disturbance attenuation algorithm. The fuzzy approximation error, which is influenced by the control input, is taken as the disturbance signal in the proposed algorithm. The authors argue that, because of the tradeoff between the attenuation level and the control input, performance robustness cannot be achieved by the proposed algorithm. The original authors agree that the approximation error will influence the performance robustness, especially in the case without external disturbance and with very small attenuation level. However, in practical control applications, very small attenuation levels are avoided in order to prevent high-gain control.
Keywords :
H/sup /spl infin control; adaptive control; control system synthesis; fuzzy control; nonlinear control systems; robust control; tracking; uncertain systems; H/sub /spl infin// disturbance attenuation; H/sub /spl infin// tracking design; adaptive fuzzy approach; fuzzy approximation error; performance robustness; uncertain nonlinear SISO systems; Adaptive systems; Approximation algorithms; Approximation error; Attenuation; Fuzzy control; Fuzzy logic; Fuzzy systems; Intelligent control; Robust control; Robustness;
fLanguage :
English
Journal_Title :
Fuzzy Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
1063-6706
Type :
jour
DOI :
10.1109/91.728459
Filename :
728459
Link To Document :
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