scholarly journals On the design of observer-based fuzzy adaptive controller for nonlinear systems with unknown control gain sign

2012 ◽  
Vol 201 ◽  
pp. 71-85 ◽  
Author(s):  
A. Boulkroune ◽  
M. M'saad
Keyword(s):  
Nonlinear Systems ◽  
Adaptive Controller ◽  
Control Gain ◽  
Fuzzy Adaptive Controller ◽  
Unknown Control ◽  
Fuzzy Adaptive

scholarly journals Fuzzy Adaptive Prescribed Performance Control for Uncertain Horizontal Platform System with Unknown Control Gain

2015 ◽  
Vol 2015 ◽  
pp. 1-8
Author(s):  
Wei Xiang ◽  
Yeguo Sun ◽  
Chunzhi Yang
Keyword(s):  
Control Method ◽  
Adaptive Controller ◽  
Performance Bounds ◽  
Constrained System ◽  
Prescribed Performance ◽  
Performance Technique ◽  
Control Gain ◽  
Unknown Control ◽  
Platform System ◽  
Fuzzy Adaptive

This paper proposes a fuzzy adaptive control method for uncertain horizontal platform system with unknown control gain, which is capable of guaranteeing the prescribed performance bounds. An error transformation is introduced to transform the original constrained system into an equivalent unconstrained one. Then, based on the error transformation technique and the predefined performance technique, a fuzzy adaptive controller is designed for the unconstrained system. It is shown that all the variables of the resulting closed-loop system are bounded. Finally, an illustrative example is given to demonstrate the effectiveness and usefulness of the proposed method.

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