scholarly journals Design and Synchronization of Master-Slave Electronic Horizontal Platform System

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Hang-Hong Kuo ◽  
Teh-Lu Liao ◽  
Jun-Juh Yan
Keyword(s):  
Lyapunov Stability ◽  
Earthquake Engineering ◽  
Stability Condition ◽  
Output Feedback ◽  
Lyapunov Stability Theory ◽  
Global Synchronization ◽  
Output Feedback Controller ◽  
Control Scheme ◽  
Platform System ◽  
Research Cost

Horizontal platform system (HPS) is one of the mechanical systems with rich behavior and has extensively been applied in offshore and earthquake engineering. A corresponding electronic HPS is proposed in this paper to reduce the research cost and time when studying dynamics of the mechanical HPS. Furthermore, an output feedback controller is proposed for global synchronization between coupled electronic HPS systems and its stability condition is also derived by employing the Lyapunov stability theory. The experimental simulations verify the dynamics of the proposed electronic HPS and the synchronization effectiveness of the proposed control scheme.

ADAPTIVE OUTPUT FEEDBACK CONTROL FOR TRAJECTORY TRACKING OF AUV IN WAVE DISTURBANCE CONDITION

2013 ◽  
Vol 11 (03) ◽  
pp. 1350027 ◽  
Author(s):  
LIJUN ZHANG ◽  
XUE QI ◽  
YONGJIE PANG ◽  
DAPENG JIANG
Keyword(s):  
Output Feedback ◽  
Autonomous Underwater Vehicle ◽  
Direct Method ◽  
Output Feedback Control ◽  
Adaptive Controller ◽  
Feedback Controller ◽  
Wave Disturbance ◽  
Output Feedback Controller ◽  
Wave Disturbances ◽  
Control Scheme

This paper develops an adaptive output feedback controller that forces an autonomous underwater vehicle (AUV), named Omni-Directional Intelligent Navigator (ODIN), to track a desired trajectory with bounded errors in wave disturbance condition. An adaptive controller is introduced based on a nonlinear model whose measurable output is corrupted by wave disturbances. Thus an observer is built to reconstruct the full states including wave velocity, wave motion displacement, vehicles velocity, position and rotation angle information which are used in the output feedback controller. Ultimate boundedness of the error signals is shown through Lyapunovs direct method. Finally, simulation studies for ODIN illustrate the effectiveness of the proposed control scheme.

scholarly journals Adaptive Fuzzy Containment Control for Uncertain Nonlinear Multiagent Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Yang Yu ◽  
Kang-Hyun Jo
Keyword(s):  
Multiagent Systems ◽  
Output Feedback ◽  
State Feedback ◽  
Control Method ◽  
Directed Graphs ◽  
Lyapunov Stability Theory ◽  
Fuzzy Logic Systems ◽  
Containment Control ◽  
Control Scheme ◽  
Multiple Leaders

This paper considers the containment control problem for uncertain nonlinear multiagent systems under directed graphs. The followers are governed by nonlinear systems with unknown dynamics while the multiple leaders are neighbors of a subset of the followers. Fuzzy logic systems (FLSs) are used to identify the unknown dynamics and a distributed state feedback containment control protocol is proposed. This result is extended to the output feedback case, where observers are designed to estimate the unmeasurable states. Then, an output feedback containment control scheme is presented. The developed state feedback and output feedback containment controllers guarantee that the states of all followers converge to the convex hull spanned by the dynamic leaders. Based on Lyapunov stability theory, it is proved that the containment control errors are uniformly ultimately bounded (UUB). An example is provided to show the effectiveness of the proposed control method.

NETWORK SYNCHRONIZATION BY DYNAMIC DIFFUSIVE COUPLING

2013 ◽  
Vol 23 (04) ◽  
pp. 1350076 ◽  
Author(s):  
C. MURGUIA ◽  
R. H. B. FEY ◽  
H. NIJMEIJER
Keyword(s):  
Computer Simulations ◽  
Network Topology ◽  
Coupling Strength ◽  
Output Feedback ◽  
Sufficient Conditions ◽  
Nonlinear Observer ◽  
Network Synchronization ◽  
Global Synchronization ◽  
Diffusive Coupling ◽  
Output Feedback Controller

The problem of controlled network synchronization for a class of nonlinear observable systems interconnected via dynamic diffusive coupling is studied. We construct a dynamic diffusive coupling combining a nonlinear observer and an output feedback controller. Sufficient conditions on the systems to be interconnected, on the network topology, and on the coupling strength that guarantee (global) synchronization are derived. Moreover, using the notion of semipassivity, we prove that under some mild assumptions, the solutions of interconnected semipassive systems are ultimately bounded. The results are illustrated by computer simulations of coupled FitzHugh–Nagumo oscillators.

scholarly journals Hardware Implementation of Flatness Based Nonlinear Sensorless Control Level for Three-Tank System

2020 ◽  
Vol 18 (1) ◽  
pp. 80-88
Author(s):  
Mondher Amor ◽  
Taoufik Ladhari ◽  
Salim Hadj said ◽  
Faouzi Msahli
Keyword(s):  
Discrete Time ◽  
Output Feedback ◽  
Hardware Implementation ◽  
Sensorless Control ◽  
Control Level ◽  
Experimental Results ◽  
The Other ◽  
Output Feedback Controller ◽  
Control Scheme ◽  
Tank System

This paper deals with the flatness-based approach for sensorless control of the three-tank system. Two main characteristics of the proposed control deserve to be mentioned. Firstly, the relative simplicity of implementation compared with the other advanced output feedback controller. Secondly, the estimation of the non-measurable states using a continuous-discrete time observer which can provide, even for weakly sampled output, all the missing states. Simulation and experimental results show the applicability and the efficiency of the proposed control scheme

scholarly journals Lag Synchronization of Hyperchaotic Systems via Intermittent Control

2012 ◽  
Vol 2012 ◽  
pp. 1-10
Author(s):  
Junjian Huang ◽  
Chuandong Li ◽  
Wei Zhang ◽  
Pengcheng Wei ◽  
Qi Han
Keyword(s):  
Theoretical Analysis ◽  
Lyapunov Stability ◽  
Stability Theory ◽  
Sufficient Conditions ◽  
Lyapunov Stability Theory ◽  
Intermittent Control ◽  
Lag Synchronization ◽  
Control Scheme ◽  
Hyperchaotic Systems ◽  
Theoretical Results

Different from the most existing results, in this paper an intermittent control scheme is designed to achieve lag synchronization of coupled hyperchaotic systems. Several sufficient conditions ensuring lag synchronization are proposed by rigorous theoretical analysis with the help of the Lyapunov stability theory. Numerical simulations are also presented to show the effectiveness and feasibility of the theoretical results.

scholarly journals Anti-Synchronization of Fractional-Order Chaotic Circuit with Memristor via Periodic Intermittent Control

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Fanqi Meng ◽  
Xiaoqin Zeng ◽  
Zuolei Wang ◽  
Xinjun Wang
Keyword(s):  
Theoretical Analysis ◽  
Numerical Simulations ◽  
Fractional Order ◽  
Lyapunov Stability ◽  
Stability Theory ◽  
Lyapunov Stability Theory ◽  
Intermittent Control ◽  
Chaotic Circuit ◽  
Control Scheme

In this paper, the anti-synchronization of fractional-order chaotic circuit with memristor (FCCM) is investigated via a periodic intermittent control scheme. Based on the principle of periodic intermittent control and the Lyapunov stability theory, a novel criterion is adopted to realize the anti-synchronization of FCCM. Finally, some examples of numerical simulations are exploited to verify the feasibility of theoretical analysis.

scholarly journals Full-Order Disturbance-Observer-Based Control for Singular Hybrid System

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Xiuming Yao ◽  
Ze Dong ◽  
Dongfeng Wang
Keyword(s):  
Lyapunov Stability ◽  
Hybrid System ◽  
Disturbance Observer ◽  
Composite System ◽  
Sufficient Conditions ◽  
Lyapunov Stability Theory ◽  
Linear Matrix ◽  
Matrix Inequalities ◽  
Control Scheme ◽  
System States

The problem of the disturbance-observer-based control for singular hybrid system with two types of disturbances is addressed in this paper. Under the assumption that the system states are, unavailable, full-order observers (for both system states and the disturbance) and a nonlinear control scheme are constructed, such that the composite system can be guaranteed to be stochastically admissible, and the two types of disturbances can be attenuated and rejected, simultaneously. Based on the Lyapunov stability theory, sufficient conditions for the existence of the desired full-order disturbance-observer-based controllers are established in terms of linear matrix inequalities (LMIs). Finally, a numerical example is provided to show the effectiveness of the proposed approaches.

scholarly journals Output feedback control of nonlinear systems with uncertain ISS/iISS supply rates and noises

2014 ◽  
Vol 19 (2) ◽  
pp. 286-299 ◽  
Author(s):  
Xin Yu ◽  
Guohai Liu
Keyword(s):  
Feedback Control ◽  
Nonlinear Systems ◽  
Output Feedback ◽  
Closed Loop ◽  
Inverse Dynamics ◽  
Output Feedback Control ◽  
Reduced Order ◽  
Output Feedback Controller ◽  
Control Scheme ◽  
Reduced Order Observer

This paper considers the problem of global output feedback control for a class of nonlinear systems with inverse dynamics. The main contribution of paper is that: For the inverse dynamics with uncertain ISS/iISS supply rates, and the systems being disturbed by L2 noises, we construct a reduced-order observer-based output feedback controller, which drives the output of system to zero and maintain other closed-loop signals bounded. Finally, a simulation example shows the effectiveness of the control scheme.

THE GLOBAL SYNCHRONIZATION OF A NEW HYPERCHAOTIC LORENZ SYSTEM

2011 ◽  
Vol 25 (03) ◽  
pp. 399-406
Author(s):  
TIANSHU WANG ◽  
XINGYUAN WANG
Keyword(s):  
Numerical Simulations ◽  
Lyapunov Stability ◽  
Stability Theory ◽  
Lorenz System ◽  
Lyapunov Stability Theory ◽  
System Boundary ◽  
Global Synchronization ◽  
Hyperchaotic Lorenz System ◽  
Control Matrix

This paper studies the global synchronization of a new hyperchaotic Lorenz system proposed by Wang et al. Based on the Lyapunov stability theory, the coupled control matrix is discussed when either knowing or unknowing the system boundary, respectively. The analysis of theory and numerical simulations show that the synchronization of hyperchaos Lorenz system can be realized effectively with the methods.

Synchronization of Hyperchaotic Memristor-Based Chua’s Circuits

2014 ◽  
Vol 644-650 ◽  
pp. 3485-3488
Author(s):  
Hai Long Huang ◽  
Yan Peng ◽  
Jun Jian Huang
Keyword(s):  
Active Control ◽  
Lyapunov Stability ◽  
Stability Theory ◽  
Control Method ◽  
Lyapunov Stability Theory ◽  
Sufficient Condition ◽  
Global Synchronization ◽  
Error System ◽  
The Stability ◽  
Active Control Method

This paper further investigates the problem of synchronization of hyperchaotic memristor-based Chua’s circuits. An active control method is employed to design a controller to achieve the global synchronization of two identical memristor-based systems. Based on Lyapunov stability theory, a sufficient condition is given to guarantee the stability of the synchronization error system.

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