Relay Approach for tuning of PID controller - International Journal of ...

Amar G Khalore et al ,Int.J.Computer Technology & Applications,Vol 3 (3), 1237-1242
ISSN:2229-6093
3 “Methodology followed”:
The Methodology Followed is given below:
Consider the linear system without time delay.
Generate the simulink diagram as shown in figure 1.
Apply step input to the simulink diagram.
Find the ultimate gain (Ku) and ultimate period (Tu)
of the closed loop system.
Find the tuning parameters of the PID controllers
using various methods like ZN, Cohen Coon method.
Replace the Relay block in the simulink using the
tuned PID controller and test for the performance of
the closed loop system by applying step as test input
to the system.
Tuning of PID controller for linear systems with time
delay.
4 “Conclusion & future scope”:
[5] Somanath Majhi and Lothar Litz, Department of
Process Control, Kaiserslautern University Erwin-
Schrodinger-Str., 67653 Kaiserslautern Germany, “On line
tuning of PID controllers” Proceedings of the American
Control Conference, Denver, Colorado June 4.6.2003
[6] YangQuan Chen, ChuanHua Hu and Kevin L. Moore,
Center for Self-organizing and Intelligent Systems
(CSOIS), Dept. of Electrical and Computer Engineering,
UMC 4160, College of Engineering, 4160 Old Main Hill,
Utah State University, Logan, UT 84322-4160, USA.
“Relay Feedback Tuning of Robust PID Controllers with
Iso-Damping Property” Proceedings of the 4th IEEE
Conference on Decision and Control, 2003
[7] Myung-Hyun Yoon and Chang-Hoon Shin, System and
Communication Research Laboratory Korea Electric Power
Research Institute 103-16 Munji-dong Yusung-ku, Taejon
305-380, Korea, “Design of on line tuning PID controller
for power plant process control” SCE '97 July 29-31,
Tokushima.
This paper gives a brief overview of the various
PID Auto-tuning methods for single input single
output available in literature. The main objective of
this work has been to demonstrate relay PID autotuning
method. For SISO PID controller, two
different tuning formulae can be used. The responses
of the closed loop systems for various control action
shows that the controller are perfectly tuned for the
given application. Since it is a closed loop method of
tuning, the performance is guaranteed.
References:
[1] H.-P.Huang, M.-L.Roan and J.-C.Jeng, The authors are
with the Department of chemical Engineering, National
Taiwan University, Taipei, Taiwan 10617, “On-line
adaptive tuning for PID controllers” IEE Proceedings
online no. 20020099 DOI: 10.1049/ip-cta: 20020099, 12th
November 2001.
[2] Tor Steinar Schei ,SINTEF Automatic Control 1992
ACC/FA127034 Trondheim –NTH Norway, “Closed-loop
Tuning of PLD Controllers”.
[3] C. C. Hang and Kok Kee Sin, “On-Line Auto Tuning of
PID Controllers Based on the Cross-Correlation
Technique” IEEE Transactions on industrial electronics,
Vol. 38.No.6, December 1991.
[4] Jing-Chug Shen Huann-Keng Chiang* Department of
Automation Engineering National Huwei Institute of
Technology, Huwei, Yunlin, Taiwan, National Yunlin
University of Science and Technology, Toulou, Yunlin,
Taiwan, “PID Tuning Rules for Second Order Systems”
2004 5th Asian Control Conference.
IJCTA | MAY-JUNE 2012
Available online@www.ijcta.com
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