Title :
A decentralized PID controller for interacting non linear systems
Author :
Ravi, V.R. ; Thyagarajan, T.
Author_Institution :
Dept. of Electron. & Instrum. Eng., Velammal Eng. Coll., Chennai, India
Abstract :
The interactions between input/output variables are a common phenomenon and the main obstacle encountered in the design of multi-loop controllers for interacting multivariable processes. In this paper, a method for controlling multivariable processes is presented. The controller design is divided into two parts: firstly, a decoupling matrix is designed in order to minimize the interaction effects. Then, the controller design is obtained for the process + decoupler block. The aim is to meet the design specifications for each loop independently. This method for multivariable decoupling and multiloop PID controller is applied to Two Tank Conical Interacting System (TTCIS). This TTCIS is considered as two tank benchmark problem used by many researchers. Simulation results and experimental results with TTCIS are provided to demonstrate the effectiveness and practicality of the proposed method.
Keywords :
MIMO systems; control system synthesis; decentralised control; matrix algebra; multivariable control systems; nonlinear control systems; three-term control; controller design; decentralized control; decoupling matrix; multiloop PID controller; multivariable decoupling; multivariable process control; nonlinear system; tank benchmark problem; two tank conical interacting system; Arrays; Mathematical model; Process control; Real time systems; Steady-state; Tuning; Valves; Decentralized controller; Decoupling; Multi-loop PID controller; Relative Gain Array; Two Tank Conical Interacting System;
Conference_Titel :
Emerging Trends in Electrical and Computer Technology (ICETECT), 2011 International Conference on
Conference_Location :
Tamil Nadu
Print_ISBN :
978-1-4244-7923-8
DOI :
10.1109/ICETECT.2011.5760132
