New Smith Predictor Controller Design for Time Delay System

2017 ◽  
Author(s):  
Youcef Zennir ◽  
Mohand Said Larabi ◽  
Hassen Benzaroual
Keyword(s):  
Time Delay ◽  
Controller Design ◽  
Delay System ◽  
Smith Predictor ◽  
Time Delay System

scholarly journals H∞ Control of Coronary Artery Input Time-Delay System via the Free-Matrix-Based Integral Inequality

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Sha-sha Li ◽  
Zhan-shan Zhao ◽  
Jing Zhang ◽  
Jie Sun ◽  
Lian-kun Sun
Keyword(s):  
Coronary Artery ◽  
Time Delay ◽  
Integral Inequality ◽  
Controller Design ◽  
Convex Combination ◽  
External Disturbance ◽  
Delay System ◽  
Linear Matrix ◽  
Time Delay System ◽  
Input Time

The issue of H∞ control for the coronary artery input time-delay system with external disturbance is of concern. To further reduce conservation, we utilize the free-matrix-based integral inequality, Wirtinger-based integral inequality, and reciprocal convex combination approach to construct Lyapunov-Krasovskii function (LKF). Then a sufficient condition for controller design which can guarantee robust synchronization the coronary artery system is represented in terms of linear matrix inequality (LMI). Finally, a numerical example is exploited to show the effectiveness of the proposed methods.

Simulation and Analysis to Control Algorithms of the Large Time-Delay System Based on Simulink

2012 ◽  
Vol 532-533 ◽  
pp. 654-658
Author(s):  
Shi Zhe Li ◽  
Yong Guang Ma ◽  
Zheng Zhao
Keyword(s):  
Time Delay ◽  
Large Time ◽  
Industrial Process ◽  
Fast Response ◽  
Delay System ◽  
Smith Predictor ◽  
Model Parameters ◽  
Time Delay System ◽  
Industrial Process Control ◽  
Delay Phenomenon

Because of the universal existence of time-delay phenomenon in industrial process control, this paper analyzes the characteristics of two kinds of control methods, discusses the relations between general control algorithm and Smith predictor compensation, and simulated studies the mismatch of model, the change of delay time and the effect of the disturbance to the system. Simulation results show that: improved Smith predictor controller has the advantages of fast response and low overshoot. Especially in the case of the mismatch of model, it has better robustness and stronger anti-interference ability. The improved Smith predictor brings a good quality, which has little sensitivity to the model parameters. It provides a kind of method to overcome the time delay.

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