A Control Approach to Web Speed and Tension Regulation of Web Transport Systems Based on Dynamic Surface Control

2021 ◽  
Author(s):  
Ly Tong Thi ◽  
Cuong Nguyen Manh ◽  
Tung Lam Nguyen
Keyword(s):  
Dynamic Surface Control ◽  
Transport Systems ◽  
Dynamic Surface ◽  
Control Approach ◽  
Surface Control ◽  
Tension Regulation

An Improved Dynamic Surface Control Approach and Applications to the Control of DC-DC Power Converter

2012 ◽  
Vol 229-231 ◽  
pp. 811-814
Author(s):  
Wen Lei Li
Keyword(s):  
Dynamic Surface Control ◽  
Power Converter ◽  
Buck Converter ◽  
Parameter Uncertainties ◽  
Dynamic Surface ◽  
Control Approach ◽  
Controlled Systems ◽  
Dc Power ◽  
Surface Control ◽  
Equivalence Criterion

This article presents an improved dynamic surface control (IDSC) approach for DC-DC Buck converter with parameter uncertainties and external disturbances. For IDSC method, the parameters update laws are designed based on uncertainty equivalence criterion, the requirements to the controlled systems are reduced, and the problem of explosion of complexity can be overcome. The features of the derived controller are discussed and illustrated by the Simulation study. The analysis and simulation show that the obtained controller possesses good adaptability and robustness to system uncertainties.

scholarly journals Fuzzy State Observer-Based Adaptive Dynamic Surface Control of Nonlinear Systems with Time-Varying Output Constraints

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Min Wan ◽  
Qingyou Liu ◽  
Jiawei Zheng ◽  
Jiaru Song
Keyword(s):  
Nonlinear Systems ◽  
Dynamic Surface Control ◽  
State Observer ◽  
Time Varying ◽  
Dynamic Surface ◽  
Control Approach ◽  
Surface Control ◽  
Output Constraints ◽  
Fuzzy State ◽  
Fuzzy State Observer

In this paper, a new fuzzy dynamic surface control approach based on a state observer is proposed for uncertain nonlinear systems with time-varying output constraints and external disturbances. An adaptive fuzzy state observer is used to estimate the states that cannot be measured in the systems. In our method, a time-varying Barrier Lyapunov Function (BLF) is used to ensure that the output does not violate time-varying constraints. In addition, dynamic surface control (DSC) technology is applied to overcome the problem of “explosion of complexity” in a backstepping control. Finally, the stability and signal boundedness of the system are confirmed by the Lyapunov method. The simulation results show the effectiveness and correctness of the proposed method.

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