Modified smith predictor design for networked control system with time delay

This paper considers the stability andH∞control problem of networked control systems with time delay. Taking into account the influence of network with delay, unknown input disturbance, and uncertainties of the system modeling, meanwhile we establish a precise, closed-loop model for networked control systems with time delay. By selecting a proper Lyapunov-Krasovskii function and using Lyapunov theorem, a sufficient condition for stability of the system in the form of LMI is demonstrated, corresponding controller parameters are acquired, and the convergence of the control algorithm is proved. The simulation example shows that the construction of the network robust control system with time delay indeed improves the stability performance of the system, which indicates the effectiveness of the design.

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Stabilization for Networked Control System With Time-Delay and Packet Loss in Both S-C Side and C-A Side

IEEE Access ◽

10.1109/access.2019.2962076 ◽

2020 ◽

Vol 8 ◽

pp. 2513-2523 ◽

Cited By ~ 4

Author(s):

Yanfeng Wang ◽

Ping He ◽

Heng Li ◽

Xiaoyue Sun ◽

Wei Wei ◽

...

Keyword(s):

Control System ◽

Time Delay ◽

Packet Loss ◽

Networked Control System ◽

Networked Control ◽

System With Time Delay

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Design of Networked Control System with Time-Delay and Packet Loss

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.556-562.5400 ◽

2014 ◽

Vol 556-562 ◽

pp. 5400-5403

Author(s):

Lan Liu ◽

Xun He Yin

Keyword(s):

Control System ◽

Time Delay ◽

Packet Loss ◽

Closed Loop ◽

Random Network ◽

Networked Control System ◽

Networked Control ◽

Linear Matrix ◽

Controller Gain ◽

System With Time Delay

For Networked Control System (NCS) with random network-induced delay and packet loss, an observer is designed to reconstruct the states using output values. A piece-wise time-delay strategy and the timestamp technique are used, improving the system performance. Depending on whether data dropout occurs or not, system is modeled as an Asynchronous Dynamical System (ADS), and theorem guaranteeing the system closed-loop stability is also given. Based on Lyapunov and Linear Matrix Inequality (LMI), controller gain and observer gain are solved and TrueTime toolbox is used to verify the effectiveness of the algorithm.

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New Stability Criteria for Event-Triggered Nonlinear Networked Control System with Time Delay

Complexity ◽

10.1155/2019/1648576 ◽

2019 ◽

Vol 2019 ◽

pp. 1-13 ◽

Cited By ~ 1

Author(s):

Hongqian Lu ◽

Yue Hu ◽

Chaoqun Guo ◽

Wuneng Zhou

Keyword(s):

Control System ◽

Time Delay ◽

Networked Control System ◽

Networked Control ◽

Stability Criteria ◽

Stability And Stabilization ◽

The Stability ◽

Nonlinear Networked Control System ◽

System With Time Delay ◽

Event Triggered

This note focuses on the stability and stabilization problem of nonlinear networked control system with time delay. To alleviate the burden of transformation channel and shorten the dynamic process simultaneously, an improved event-triggered scheme is proposed. This paper employs an improved time delay method to enhance the performance and reduce the delay upper bound conservatism. Less conservative stability criteria related to the order N are derived by establishing an augmented Lyapunov-Krasovskii functional manufactured for the use of Bessel-Legendre inequality. In addition, an event-triggered controller is designed for nonlinear networked control system with time delay. At last, numerical examples are proposed to verify the effectiveness of the new method.

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