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Analysis of one dimensional and two dimensional fuzzy controllers
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作者 Ban Xiaojun Gao Xiaozhi +1 位作者 Huang Xianlin Wu Tianbao 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2006年第2期362-373,共12页
The analytical structures and the corresponding mathematical properties of the one dimensional and two dimensional fuzzy controllers are first investigated in detail. The nature of these two kinds of fuzzy controllers... The analytical structures and the corresponding mathematical properties of the one dimensional and two dimensional fuzzy controllers are first investigated in detail. The nature of these two kinds of fuzzy controllers is next probed from the perspective of control engineering. For the one dimensional fuzzy controller, it is concluded that this controller is a combination of a saturation element and a nonlinear proportional controller, and the system that employs the one dimensional fuzzy controller is the combination of an open-loop control system and a closedloop control system. For the latter case, it is concluded that it is a hybrid controller, which comprises the saturation part, zero-output part, nonlinear derivative part, nonlinear proportional part, as well as nonlinear proportional-derivative part, and the two dimensional fuzzy controller-based control system is a loop-varying system with varying number of control loops. 展开更多
关键词 one dimensional fuzzy controller two dimensional fuzzy controller analytical structures fuzzy inference control system analysis.
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Stability analysis of the simplest Takagi-Sugeno fuzzy control system using circle criterion
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作者 Lu Hongqian Huang Xianlin +2 位作者 Gao X. Z. Ban Xiaojun Yin Hang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2007年第2期311-319,共9页
A frequency-domain-based sufficient condition is derived to guarantee the globally asymptotic stability of the simplest Takagi-Sugeno (T-S) fuzzy control system by using the circle criterion. The analysis is perform... A frequency-domain-based sufficient condition is derived to guarantee the globally asymptotic stability of the simplest Takagi-Sugeno (T-S) fuzzy control system by using the circle criterion. The analysis is performed in the frequency domain, and hence the condition is of great significance when the frequency-response method, which is widely used in the linear control theory and practice, is employed to synthesize the simplest T-S fuzzy controller. Besides, this sufficient condition is featured by a graphical interpretation, which makes the condition straightforward to be used. Comparisons are drawn between the performance of the simplest T-S fuzzy controller and that of the linear compensator. Two numerical examples are presented to demonstrate how this sufficient condition can be applied to both stable and unstable plants. 展开更多
关键词 T-S fuzzy controller Stability analysis Circle criterion Frequency response method.
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