scholarly journals Adaptive Fuzzy Output Feedback Control for Partial State Constrained Nonlinear Pure Feedback Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Liping Wang ◽  
Weiwei Sun ◽  
You Wu
Keyword(s):  
Feedback Control ◽  
Output Feedback ◽  
State Constraints ◽  
Output Feedback Control ◽  
Feedback Systems ◽  
Fuzzy Logic Systems ◽  
Adaptive Fuzzy ◽  
State Observers ◽  
Partial State ◽  
Fuzzy State

The adaptive fuzzy output feedback control problem for a class of pure feedback systems with partial state constraints is addressed in this paper. The fuzzy state observers are designed to estimate the unmeasured state while the fuzzy logic systems are used to approximate the unknown nonlinear functions. The proposed adaptive fuzzy output feedback controller can guarantee that the partial state constraints are not violated, and all closed-loop signals remain bounded by use of Barrier Lyapunov Functions (BLFs). A numerical example is presented to illustrate the effectiveness of the results in this paper.

scholarly journals Adaptive Fuzzy Output-Feedback Method Applied to Fin Control for Time-Delay Ship Roll Stabilization

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Rui Bai
Keyword(s):  
Feedback Control ◽  
Output Feedback ◽  
Output Feedback Control ◽  
State Observer ◽  
Control Approach ◽  
Adaptive Fuzzy ◽  
Ship Roll ◽  
Roll Stabilization ◽  
Fuzzy State ◽  
Fuzzy State Observer

The ship roll stabilization by fin control system is considered in this paper. Assuming that angular velocity in roll cannot be measured, an adaptive fuzzy output-feedback control is investigated. The fuzzy logic system is used to approximate the uncertain term of the controlled system, and a fuzzy state observer is designed to estimate the unmeasured states. By utilizing the fuzzy state observer and combining the adaptive backstepping technique with adaptive fuzzy control design, an observer-based adaptive fuzzy output-feedback control approach is developed. It is proved that the proposed control approach can guarantee that all the signals in the closed-loop system are semiglobally uniformly ultimately bounded (SGUUB), and the control strategy is effective to decrease the roll motion. Simulation results are included to illustrate the effectiveness of the proposed approach.

Adaptive Fuzzy Output Feedback Control for a Class of Nonlinear Systems With Full State Constraints

2018 ◽  
Vol 26 (5) ◽  
pp. 2607-2617 ◽  
Author(s):  
Yan-Jun Liu ◽  
Mingzhe Gong ◽  
Shaocheng Tong ◽  
C. L. Philip Chen ◽  
Dong-Juan Li
Keyword(s):  
Feedback Control ◽  
Nonlinear Systems ◽  
Output Feedback ◽  
State Constraints ◽  
Output Feedback Control ◽  
Adaptive Fuzzy ◽  
Full State ◽  
Full State Constraints

scholarly journals Nonlinear Output Feedback Control of Flexible Rope Crane Systems With State Constraints

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 136193-136202 ◽  
Author(s):  
Ning Sun ◽  
Jianyi Zhang ◽  
Xin Xin ◽  
Tong Yang ◽  
Yongchun Fang
Keyword(s):  
Feedback Control ◽  
Output Feedback ◽  
State Constraints ◽  
Output Feedback Control
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