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

fYear

2009

fDate

8-10 March 2009

Firstpage

186

Lastpage

190

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Automation Engineering, 2009. ICCAE '09. International Conference on

Conference_Location

Bangkok

Print_ISBN

978-0-7695-3569-2

Type

conf

DOI

10.1109/ICCAE.2009.76

Filename

4804514