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International Journal of Information Technology & Computer Science ( IJITCS )

Abstract :

Presence of communication in the control loops in Networked Control Systems (NCSs) causes Delays. These delays, themselves, often cause  many imperfections such packet losses, multipacket transmission, and packet disordering. Then, delays present major challenges and problems in NCSs. This paper  presents an approach to compensate delay acting in Networked Control System. The technique employs Smith Predictor PI controller and Padé approximation to compensate delay in networked Control system. The model of the system and the delay are supposed being known. To implement Smith Predictor, the model is discretized and  Padé  approximation is used to approximate the delay. Simulation results in the Matlab /Simulink and  TrueTime show the validity of  the proposed method

Keywords :

:Networked control Systems; Network delay compensation; Smith Predictor; Padé approximation Matlab /Simulink; TrueTime

References :

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