A decentralized PID controller for interacting non linear systems

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 in...

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Bibliographic Details
Published in2011 International Conference on Emerging Trends in Electrical and Computer Technology pp. 297 - 302
Main Authors Ravi, V R, Thyagarajan, T
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2011
Subjects
Arrays
Decentralized controller
Decoupling
Mathematical model
Multi-loop PID controller
Process control
Real time systems
Relative Gain Array
Steady-state
Tuning
Two Tank Conical Interacting System
Valves
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Summary: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.
ISBN:1424479231
9781424479238
DOI:10.1109/ICETECT.2011.5760132