Title :
PID Controller Evaluation with Missing Samples in a Networked Control System Using Spline Interpolation Method
Author :
Ghude, Sarang ; Wen, Paul
Author_Institution :
Fac. of Eng., Surveying Univ. of Southern Queensland, Toowoomba, QLD
Abstract :
In networked control systems (NCS) data are communicated through networks which are subjected to damage or loss, resulting in an unstable system. To deal with issue of missing feedback/input (error (u-feedback)) data in a closed loop control system a discrete PID controller is designed. Cubic spline interpolation is used to estimate the missing input (error) values. The simulations show that the estimated values are fairly accurate. The method is then verified with the performance of first order, third order and fourth order systems.
Keywords :
closed loop systems; control system synthesis; discrete systems; distributed parameter systems; interpolation; splines (mathematics); three-term control; PID controller evaluation; closed loop control system; discrete PID controller design; first order system; fourth order system; networked control system; spline interpolation method; third order system; Communication system control; Computer networks; Control systems; Delay effects; Interpolation; Networked control systems; Sampling methods; Spline; Stability; Three-term control; Cubic Spline Interpolation; Discrete PID Controller; Missing Samples; Networked Control Systems;
Conference_Titel :
Computer and Automation Engineering, 2009. ICCAE '09. International Conference on
Conference_Location :
Bangkok
Print_ISBN :
978-0-7695-3569-2
DOI :
10.1109/ICCAE.2009.76
