scholarly journals Delay-Dependent Fuzzy Control of Networked Control Systems and Its Application

2013 ◽  
Vol 2013 ◽  
pp. 1-9
Author(s):  
Hongbo Li ◽  
Fuchun Sun ◽  
Zengqi Sun
Keyword(s):  
Control Systems ◽  
Controller Design ◽  
Networked Control Systems ◽  
Design Method ◽  
Feedback Stabilization ◽  
Networked Control ◽  
Stability Conditions ◽  
The Stability ◽  
Delay Dependent ◽  
Takagi Sugeno

This paper is concerned with the state feedback stabilization problem for a class of Takagi-Sugeno (T-S) fuzzy networked control systems (NCSs) with random time delays. A delay-dependent fuzzy networked controller is constructed, where the control parameters are ndependent on both sensor-to-controller delay and controller-to-actuator delay simultaneously. The resulting NCS is transformed into a discrete-time fuzzy switched system, and under this framework, the stability conditions of the closed-loop NCS are derived by defining a multiple delay-dependent Lyapunov function. Based on the derived stability conditions, the stabilizing fuzzy networked controller design method is also provided. Finally, simulation results are given to illustrate the effectiveness of the obtained results.

H∞ stabilisation of networked control systems with time delays and packet losses

2014 ◽  
Vol 24 (5) ◽  
Author(s):  
HONGBO LI ◽  
FUCHUN SUN ◽  
ZENGQI SUN ◽  
CHANGQING YUAN
Keyword(s):  
Control Systems ◽  
Time Delays ◽  
State Feedback ◽  
Controller Design ◽  
Networked Control Systems ◽  
Design Method ◽  
Networked Control ◽  
Closed Loop System ◽  
Packet Losses ◽  
The Stability

This paper addresses the H∞ state feedback stabilisation problem for networked control systems (NCSs) in the presence of time delays and packet losses. By introducing the concept of an effective sensor packet, the NCS is transformed into a new discrete-time switched model, where the parameters have a clear physical meaning and can be easily determined. In this framework, we derive the stability conditions of the closed-loop system in the H∞ sense, and also provide the corresponding H∞ stabilising controller design method. Finally, we give simulation and experimental results to demonstrate the effectiveness of the proposed approaches.

scholarly journals Design of Robust Guaranteed Cost PID Controller for Networked Control Systems

2010 ◽  
Vol 61 (2) ◽  
pp. 114-119 ◽  
Author(s):  
Quang Nguyen ◽  
Vojtech Veselý
Keyword(s):  
Control Systems ◽  
Pid Controller ◽  
Controller Design ◽  
Networked Control Systems ◽  
Design Method ◽  
Networked Control ◽  
Pid Controllers ◽  
Guaranteed Cost ◽  
Delay Dependent ◽  
Parameter Dependent

Design of Robust Guaranteed Cost PID Controller for Networked Control SystemsThe paper addresses the problem of an output feedback guaranteed cost controller design for Networked Control Systems (NCSs) with time-delay and polytopic uncertainties. By constructing a new parameter-dependent Lyapunov functional and applying the free-weighting matrices technique, the parameter-dependent, delay-dependent design method will be obtained to synthesize PID controllers achieving a guaranteed cost such that the NCSs can be stabilized for all admissible uncertainties and time-delays. Finally, numerical examples are given to illustrate the effectiveness of the proposed method.

H∞ Robust Control for Networked Control System with Short Time-Delay

2014 ◽  
Vol 556-562 ◽  
pp. 5501-5505 ◽  
Author(s):  
Ping Qian ◽  
Wen Rui Wang ◽  
Xue Qiang Li ◽  
Yin Zhong Ye
Keyword(s):  
Time Delay ◽  
Control Systems ◽  
Controller Design ◽  
Networked Control Systems ◽  
Design Method ◽  
Networked Control System ◽  
Networked Control ◽  
Linear Matrix ◽  
Short Time ◽  
Short Time Delay

For a kind of networked control systems with short time-delay, establish discrete time-invariant system model. Construct the Lyapunov function based on the Lyapunov asymptotic stability principle. Using Linear Matrix Inequalities method given the sufficient condition of H∞ robust controller design method of closed-loop feedback control systems. Matlab simulation indicates the effectiveness and correctness of the controller design.

Controller Design of Output Feedback MIMO Networked Control Systems with Multiple Packet Transmission

2009 ◽  
Vol 16-19 ◽  
pp. 935-940
Author(s):  
Cheng Xiang Xie ◽  
Wei Li Hu
Keyword(s):  
Control Systems ◽  
Periodic System ◽  
Controller Design ◽  
Networked Control Systems ◽  
Sampling Period ◽  
Packet Transmission ◽  
Networked Control ◽  
Matrix Inequalities ◽  
Static Scheduling ◽  
The Stability

MIMO (mult-input multi-output) networked control systems (NCSs) with multiple packet transmission is considered. The network-induced delay is assumed to be time-varying and less than one sampling period. Suppose the data of sensor node is part of system outputs and is transferred with static scheduling strategy, then the NCS is modeled as uncertain periodic system. The uncertain periodic system theory is used for the stability sufficient condition. Then a control design approach is presented via bilinear matrix inequalities (BMIs) method. The simulation result shows the effectiveness of the proposed approach.

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