Application of Combined Direct and Indirect Adaptive Control Algorithms for Temperature Control of Counter-Flow Heat Exchanger

Abstract

Application of combined direct and indirect adaptive control (CDIAC) technique for temperature control of counter-flow heat exchanger (CFHE) which are used extensively in process industries have been dealt here. A modified CDIAC technique has been developed by carrying out improvement on the original proposed by Duarte and Narendra. The modified and original CDIAC algorithms and PID control algorithm have been tested on a CFHE designed and developed in the laboratory. It has been found that the modified technique has better disturbance rejection property compared to the other two techniques. The tracking of set-point change is also improved in the modified method. The claim of improvement is based on experimental investigations stretching over a period of six months.

Indexing terms:

• Combined direct and indirect adaptive control
• Process control
• Heat exchanger

Additional information

Notes on contributors

S C Saxena

S C Saxena, Professor & Head, Electrical Engineering Department, University of Roorkee, Roorkee obtained BE (Electrical) from Allahabad University in the year 1970 and ME Electrical (M&I) and PhD from University of Roorkee in the years 1973 and 1977 respectively. He has served as an Expert at Military Technical College, Baghdad, Iraq during 1983–86 and as an Advisor in AICTE, New Delhi in the year 1994. Dr Saxena has visited France, Iraq and Kuwait. He has very wide and valuable experience of Academics and Student affairs in various important capacities in the University. He has published over 120 research papers at various national & international levels; written 6 monographs; received 9 awards including Khosla Gold Medal & Cash Award, Khosla Silver Medal and Cash Award, President of India's Prize, Jawaharlal Memorial Award; organised 23 specialised courses for industry; handled 10 research schemes; guided a large number of U G and 69 P G students for their projects, seminars and dissertations; supervised 9 and supervising 5 PhD theses; organised as chairman/Co-chairman/convener/organising secretary international/national conferences/seminars/workshops etc., and made an educational film. Dr Sexena is a fellow of IEI, Fellow of IETE, and Life Member of BMESI, NIQR, ISTE and ISCEE. He is Vice President of Biomedical Engg Society of India, former Council member of the IE (I); Chairman Roorkee Local Centre of the IE (I), Vice-President ISCEE, Member Management Committee of U P State Centre of the IE (I), Chairman ISTE Chapter at University of Roorkee, Vice-Chairman, NIQR Chapter at Roorkee, and Chairman, Consultants Committee of Roorkee School for the Deaf. He has been the Honorary Secretary of Roorkee Local Centre of the IE (I) and worked on number of expert committees of AICTE, New Delhi and University Sector Institutions. His areas of Specializations are Bio-medical Engineering and Measurement and Instrumentation. He has experience of over 20 years of consultancy and testing. Dr Saxena is a trained Motivation Trainer by NIMID Bombay and NIESBUD, New Delhi.

H K Verma

H K Verma, is a professor of electrical engineering at University of Roorkee. He obtained Bachelor of Engineering degree in 1967 from the University of Jodhpur. He got Master of Engineering degree in 1969 and PhD degree in 1977, both from the University of Roorkee. For two years (1980–82), Dr Verma worked as R&D Manager, Power and Industrial Systems Division, Universal Electrics Ltd., Faridabad. Prof Verma was Head of the Electrical Engineering Department, University of Roorkee during 1991–94 (3 years).

Dr Verma is actively engaged in research on industrial, process and biomedical instrumentation, microprocessor and computer applications in control, metering and relaying, and power system protection. He has authored over 130 research papers for national and international journals/conferences. He is fellow of the Institution of Engineers (India), Institution of Electronics and Telecommunication Engineers and Institution of Instrumentation Scientists and Technologists and member of Biomedical Engineering Society of India and National Institute of Quality and Reliability.

R H Chile

R H Chile, obtained his BE (Instrumentation) and ME (Instrumentation) from Marathwada University, Aurangabad in the years 1987 and 1993 respectively. He obtained his PhD degree from the University of Roorkee in the year 1999. He is serving as Sr Lecturer in SGGS College of Engg and Tech, Nanded (MS) in Instrumentation Department. He has published 15 research papers in the area of Process Control and Instrumentation.