scholarly journals Robust adaptive synchronization of complex network with bounded disturbances

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Chengjie Xu ◽  
Housheng Su ◽  
Chen Liu ◽  
Guohua Zhang
Keyword(s):  
Adaptive Control ◽  
Control Method ◽  
Control Strategies ◽  
Variable Structure ◽  
Adaptive Synchronization ◽  
Leader Following ◽  
Bounded Disturbances ◽  
Robust Adaptive ◽  
Robust Adaptive Synchronization ◽  
Synchronization Protocol

AbstractIn this paper, we investigate distributed robust adaptive synchronization for complex networked systems with bounded disturbances. We propose both average synchronization protocol and leader-following synchronization protocol based on adaptive control and variable structure control strategies. The synchronization conditions do not require any global information except a connection assumption under the adaptive control method. Furthermore, the external disturbances are attenuated effectively. Finally, we present numerical simulations to illustrate the theoretical findings.

Direct adaptive algorithm for seismic control of damaged structures with faulty sensors

2017 ◽  
Vol 24 (24) ◽  
pp. 5854-5866 ◽  
Author(s):  
Amin Hosseini ◽  
Touraj Taghikhany ◽  
Arash Yeganeh Fallah
Keyword(s):  
Adaptive Control ◽  
Seismic Response ◽  
Structural Damage ◽  
Control Method ◽  
Control Strategies ◽  
Magnetorheological Damper ◽  
Main Concern ◽  
Building Structures ◽  
Steel Moment Resisting Frames ◽  
Seismic Control

In recent decades, the application of semi-active control strategies has gained much attention as a way to reduce the seismic response of civil infrastructures. However, uncertainty in the modeling process of systems with possible partial or total failure during an earthquake is the main concern of engineers about the reliability of this strategy. In this regard, adaptive control algorithms are known as an effective solution to adjust control parameters with different uncertainties. In the current study, the efficiency of the simple adaptive control method (SACM) is investigated to control the seismic response of building structures in the presence of unknown structural damage and fault in the sensors. The method is evaluated in 20-story steel moment resisting frames with different arrangement of smart dampers and sensors with various damage and fault scenarios. The results show that the SACM control system can effectively reduce the maximum inter-story drift of the structure in all different assumed magnetorheological damper arrangements. Furthermore, combination of a Kalman–Bucy filter with the SACM improves robustness of the controller to the uncertainties of sensors faults and damages of structural elements.

scholarly journals Robust Adaptive Control for Nonlinear Aircraft System with Uncertainties

2020 ◽  
Vol 10 (12) ◽  
pp. 4270
Author(s):  
Jiao Chen ◽  
Jiangyun Wang ◽  
Weihong Wang
Keyword(s):  
Adaptive Control ◽  
High Frequency ◽  
Control Method ◽  
Longitudinal Direction ◽  
Flight Simulation ◽  
Robust Adaptive Control ◽  
High Frequency Oscillation ◽  
Robust Adaptive ◽  
Aircraft System ◽  
Fast Adaptation

Model reference adaptive control (MRAC) schemes are known as an effective method to deal with system uncertainties. High adaptive gains are usually needed in order to achieve fast adaptation. However, this leads to high-frequency oscillation in the control signal and may even make the system unstable. A robust adaptive control architecture was designed in this paper for nonlinear aircraft dynamics facing the challenges of input uncertainty, matched uncertainty, and unmatched uncertainty. By introducing a robust compensator to the MRAC framework, the high-frequency components in the control response were eliminated. The proposed control method was applied to the longitudinal-direction motion control of a nonlinear aircraft system. Flight simulation results demonstrated that the proposed robust adaptive method was able to achieve fast adaptation without high-frequency oscillations, and guaranteed transient performance.

Robust adaptive synchronization of general dynamical networks with multiple delays and uncertainties

Pramana ◽  
2016 ◽  
Vol 86 (6) ◽  
pp. 1223-1241 ◽  
Author(s):  
YIMING LU ◽  
PING HE ◽  
SHU-HUA MA ◽  
GUO-ZHI LI ◽  
SALEH MOBAYBEN
Keyword(s):  
Adaptive Synchronization ◽  
Multiple Delays ◽  
Dynamical Networks ◽  
Robust Adaptive ◽  
Robust Adaptive Synchronization

scholarly journals NEURAL NERWORK BASED ROBUST ADAPTIVE SYNCHRONIZATION OF A CHAOTIC SYSTEM

2001 ◽  
Vol 50 (11) ◽  
pp. 2112
Author(s):  
GUAN XIN-PING ◽  
TANG YING-GAN ◽  
FAN ZHENG-PING ◽  
WANG YI-QUN
Keyword(s):  
Chaotic System ◽  
Adaptive Synchronization ◽  
Robust Adaptive ◽  
Robust Adaptive Synchronization
Sign in / Sign up

Export Citation Format

Share Document