ICGST- ACSE Journal

ACSE
 Volume (6), Issue (4) ICGST
Design of Modified Dead-Time Compensators for Stable Processes  with Integrator and Longer Time using Adaptive Control

G.Saravanakumar1, R.S.D.WahidhaBanu2, C.G.Nayak1

1Manipal Institute of Technology, Manipal-576104, India
2Government College of Engineering, Salem-636011, India
 

Abstract:

The smith predictor is well known as an effective deadtime compensator for a stable process with largedeadtime. The previous modes of smith predictors such as Internal model control and Predictive control can not be used for processes having an integral mode and longer dead times. Since a constant load disturbance will result in steady- state error. This paper presents two approaches to overcome this problem. In the first approach the smith predictor was able to overcome the set point response and Load response. In the second approach an I-PD controller is used and, it is proved that there is no steady state error for a constant load disturbance. An approach to auto-tune this I-PD controller for plants with longer dead-time is also attempted by deriving adaptive controller gains.

Keywords: Dead-time compensators, Ziegler-Nicholas tuning, internal model control, Predictive control, Load response and, Set point response.

(Full Paper, 364 KB)

Biographies:

G.saravanakumar, is presently senior grade Lecturer with the department of Instrumentation and control Engineering, MIT, Manipal, India. He completed his master’s degree in 2002.Presently he is a research scholar in Anna University, Chennai, pursuing his work in the field of Dead-time compensators with Adaptive control. He has published many papers in both national and International conferences/journals. His research areas and field of Interests include control system, process control and adaptive control etc.

 

 R.S.D.Wahidabanu, is presently a professor with the department of Electronics and Communication Engineering, ACCET, Karaikudi, India. She completed her PhD from Anna University, Chennai during 1994. Her research area of Interests includes Artificial Intelligence, Computer protocols etc.12 students are being guided by her for doing PhD. She is a Life member in several Technical societies. She had published many papers in National/International conferences/Journals.

 

 Shri C. Gurudas Nayak, received his B.E. in Instrumentation Technology in 1988 and M.S. in Communication Engineering in the year 1996. Ongoing PhD scholar in Communication and Control engineering registered in 2004. He has 17 years of Industrial / Teaching experiences and published 20 papers in International and national Conferences.  He is currently working as a Lecturer in M.I.T. Manipal. His research interests include of Communication Networks and Mobile Telephone Systems.

BibTex:

@ARTICLE{P1110634002,

AUTHOR = {G.Saravanakumar and R.S.D.WahidhaBanu and C.G.Nayak},

TITLE = {Design of Modified Dead-time compensators for stable processes with integrator and longer time using Adaptive control},

JOURNAL = {ICGST International Journal on Automatic Control and Systems Engineering, ACSE},

YEAR = {2006},

VOLUME = {06},

ISSUE = {IV},

PAGES = {1--5}

}

(Full Paper, 364 KB)