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Publications of Prof. K. S. Walgama
 
 
 

Research Publications
  • Journals
  • Walgama, K.S., Shah, S.L. and Fisher, D.G. (1989), "Control of processes with noise Publications and time delays", AIChE J., 35, 2, 213-222
  • Walgama, K.S. and Sternby, J.(1990) "Inherent observer property in a class of anti windup compensators", Int. J. Control, 52, 3, pp. 705-724.
  • Rönnbäck, S., Walgama, K.S. and Sternby, J. (1992) "An extension to the generalized anti- windup compensator", Mathematics of the analysis and design of process control, Borne. P., Tzafestas, S.G. and N.E. Radhy (Editors), Elsevier Science Publishers B.V. (North Holland).
  • Walgama, K.S.,Rönnbäck, S. and Sternby, J. (1992) Generalization of conditioning technique for antiwindup compensation", Proc. of IEE, Part D, 139, pp. 109-118.
  • Walgama, K.S. and Sternby, J. (1993) "On the Convergence properties of adaptive pole-placement controllers with anti windup compensators", IEEE Trans. on Automatic Control, 38, 1, pp. 128-132.
  • Walgama, K.S. and Sternby, J. (1993) "Conditioning Technique for multiinput multioutput processes with input saturation ", Proc. of IEE, Part D, 140, pp. 231-241.
  • Walgama, K.S. and Sternby, J. (1995) "A feedforward controller design for periodic signals in non-minimum phase processes", Int. J. Control, 61, 3, pp. 695-718.
  • Maithripala, S. and Walgama, K.S. (1999) "Tunable Antiwindup compensators for Industrial Controllers", Engineer- The Journal of IESL", Vol. XXXI, 5-17.
  • Walgama, K.S., Ekanayake, J.B. and Atputharaja, A. (2000) "Development of Digital control system for current and Temperature control of an electrodialyser", Engineer- The Journal of IESL", Vol. XXXII.
  • Kulasekara, E.C., Hangen, L.M., Walgama, K.S. and K. Premaratne (2000) "Optimal placement of Actuators and sensors for Floor Vibration Control", American Society of Civil Engineering -Journal of Structural Engineering, December.
  • Seneviratne, G.M.M.M.A, Nanayakkara, N.K.P.K, Walgama, K.S., Yatawatte, A.B. and C.D.A. Goonasekara (2004) Prototype Medical Decision Support System Utilizing Sensitivity and Specificity of clinical features for Diagnosis: A Novel Approach., Ceylon Journal of Medical Science, Vol. 47, pp 51-58
  • Weeraddana, D.M., C. Kulasekara, and K.S. Walgama (2015) Dempster- Shafer Information Filtering Framework: Temporal and Spatio -Temporal Evidence Filtering, IEEE Sensors Journal, Vol. 15, No. 10.
  • Conferences and Research Sessions
  • Walgama, K.S., Shah, S.L. and Fisher, D.G. (1985), "Evaluation of anadaptive Kalman Filtering scheme for dead time compensation", Proc.35th, CSChE National Conf., pp. 207-212, Calgary, Canada.
  • Foley, M. Walgama, K.S., Jin, Y. and Fisher, D.G. (1988), "Adaptive control based on modified Kalman filter predictor", Proc. of IFAC Symp. on Identification and System parameter Estimation, Beijing, China.
  • Rönnbäck, S., Walgama, K.S. and Sternby, J. (1991) "An extension to the generalized anti-windup compensator", 13th IMACS World congress on Sci. Comp., Dublin, Ireland.
  • Jayasuriya, S. and Walgama, K.S. (1993) " On continuous tracking under zero, finite or arbitrary preview information", DSC- Vol 50/ PED- vol. 63, Symp. on Mechatronics, ASME, San Francisco, CA.
  • Walgama, K.S. (1995) "Numerical Modelling of Tea Plant Growth", Second workshop on the Modelling and Simulation of Tea Production, TRI-EFAC- BOKU, Tea Research Institute, Sri Lanka <
  • Hillerström, G. and Walgama, K.S. (1996) "Repetitive control theory and applications - A survey", Presented at IFAC World control congress, San Francisco.
  • Alahakoon, S. Walgama, K.S., M. Leksell and Sadarangani, C. (1996) "Digital control for eccentric rotor positioning of an AMB", 5th International Symposium on Magnetic Bearings, Kanazawa, Japan.
  • Alahakoon, S. Walgama, K.S., M. Leksell and Sadarangani, C. (1997) "Digital control of Active Magnetic Bearing", Transactions of the IEE Sri Lanka Center, Journal of the Institution of Electrical Engineers, Sri Lanka.
  • Alahakoon, S. Walgama, K.S., M. Leksell and Sadarangani, C. (1997) "Modeling and Control of Active Magnetic Bearing Actuator with Matlab based environment", Proc. of the Nordic MATLAB Conference, Stockholm, Sweden.
  • Maithripala, S. and Walgama, K.S. (1997) "Optimal tuning of Anti-windup compensators", Proc. of the Annual Research Sessions, Vol. 2, University of Peradeniya, Sri Lanka.
  • Ariyarathna, T., Ketharaswari, P., Shanthini, R. and Walgama, K.S. (1997) "Experimenting with a household composter", Proc. of the Annual Research Sessions, Vol. 2, University of Peradeniya, Sri Lanka.
  • Arulanandam, N., Shanthini, R. and Walgama, K.S. (1997) "Mathematical modelling of Anode temperature dynamics of an Electrodialyser", Presented at the Annual Research Sessions, Faculty of Engineering, University of Peradeniya, Sri Lanka.
  • Alahakoon, S. Walgama, K.S., M. Leksell and Harnefors, L. (1997) "An investigation into a sensorless adaptive control scheme based on a voltage error vector for permanent-magnet synchronous motors" PCIM '98, Proc. of the 33rd International Conference on Intelligent Motion, Nurenburg, Germany.
  • Alahakoon, S. Walgama, K.S., M. Leksell and Harnefors, L. (1998) "Sensorless Adaptive control of permanent-magnet Synchronous Motors based on a voltage error vector", IEEE Advanced Motion Control Conference '98, Coimbra, Portugal.
  • Alahakoon, S. Walgama, K.S., M. Leksell and Harnefors, L. (1998) "Sensorless Adaptive control of permanent-magnet Synchronous Motors for improved performance", Transactions of IEE Sri Lankan Centre, Sri Lanka.
  • Ekanayake, J.B. and Walgama, K.S. (1998) "Controllers for Static var compensation", Transactions of Institute of Engineers, Sri Lanka.
  • Walgama, K.S., Ekanayake, J.B. and Atputharaja, A. (1998) "Development of Digital control system for current and Temperature control of an electrodialyser", Proceedings of the Annual Research Sessions, University of Peradeniya, Sri Lanka.
  • Maithripala, S. and Walgama, K.S. (1998) "Optimal anti windup compensator design to handle a wide range of setpoints", Proceedings of the Annual Research Sessions, University of Peradeniya, Sri Lanka. (Abstract)
  • Alahakoon, S. Walgama, K.S., M. Leksell and Harnefors, L. (1998) "Sensorless Adaptive control of permanent-magnet Synchronous Motors", Proceedings of the Annual Research Sessions, University of Peradeniya, Sri Lanka. (Abstract)
  • Kulasekara, E.C., Hangen, L.M., Walgama, K.S. and K. Premaratne (2000) "MIMO Floor Vibration Controller Design", American Control Conference, ACC 2000.
  • Walgama, K.S. and S. Alahakoon (2000) "Mathematical Modelling of Active Magnetic Bearing Actuator", Proceedings of the Annual Research Sessions of Faculty of Engineering, University of Peradeniya, Sri Lanka.
  • Wijetilake, S., Alahakoon, S., Walgama, K.S. Abeyrathne, S. and M. Leksell (2000) "Speed Sensorless Control of Induction Motors", Proceedings of the Annual Research Sessions of Faculty of Engineering, University of Peradeniya, Sri Lanka.
  • Alahakoon, S., Walgama, K.S., Leksell, M. and Harnefors, L. (2000) "New Cascaded Controller Structure for Variable Speed Permanent Magnet Synchronous Motor Drives", Proceedings of the Annual Research Sessions of Faculty of Engineering, University of Peradeniya, Sri Lanka.
  • Alahakoon, S., Walgama, K.S., Leksell, M. and Harnefors, L. (2001) "New Cascaded Controller Structure for Variable Speed Permanent Magnet Synchronous Motor Drives", Conf. on Drives & Controls and Power Electronics.
  • Goonasekara, CDA, Walgama, K.S. and NKPK Nanayakkara (2001) "An Innovative prototype decision support system for critical care", 8th world congress of intensive and critical care medicine, Sydney, Australia.
  • Ariyarathna, SMWTPK, R. Shanthini and K.S. Walgama (2001) "Use of Cation Exchange membrane in the Electrodialysis Treatment of Black Liquor", Proceedings of the Annual Research Sessions, Univ. of Peradeniya, Sri Lanka, Vol. 6.
  • Goonasekara, CDA, Walgama, K.S. and NKPK Nanayakkara (2002) "An Innovative prototype decision support system for critical care Problems", 8th Annual Scientific Sessions, College of Anesthesiologists of Sri Lanka, (2002)
  • Nanayakkara, NKPK, Walgama, K., Yatawatte, AB, Seneviratne, A and CDA Goonasekera. (2003), Development of prototype computer based medical decision support system that utilizes ‘sensitivity’ and ‘specificity’ of a clinical feature for diagnosis: A novel approach. Proceedings of the Peradeniya University Research Sessions, Sri Lanka Vol. 8.
  • Walgampaya, CK, Elkaduwa, DDB, Walgama, KS and JV Wijayakulasooriya (2003), “ Real time fetal heart rate monitoring system”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka Vol. 8.
  • Wickramasinghe, IPM and KS Walgama (2003), “ Simulation and Control of Open Channel flow in a mini hydro power station”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka Vol. 8.
  • Vignarajah, M., Ranaweera, MP and KS Walgama (2003) “ ---Finite element of largedisplacement analysis”, Proceedings of the Peradeniya University Research Sessions, Sri Lanka Vol. 8.
  • Samaranayake, L., S. Alahakoon and KS Walgama (2003) “Speed controller strategies for Distributed motion control via Eithernet” , IEEE International Symposium on Intelligent Control, USA.
  • Wickramasinghe, IPM and KS Walgama (2005) “ Rule based controller design for water level control of fore bay fed by an open channel”, Proceedings of the International Conference on Information and Automation, Colombo, Sri Lanka.
  • Wickramasinghe, IPM and KS Walgama (2005) “Development of control strategies for water lavel control of a forebay fed by an open channel ” Proccedings of the Peradeniya University Research Sessions.
  • Wickramasinghe, IPM and KS Walgama (2006) “Development of control strategies for open channel flow control and fore bay level control” Proccedings of the 11th Asian Congress of Fluid mechanics, Kula-Lampur, Malaysia
  • Liyanage, S.R, Walgama,K.S., Goonasekara, C.D.A., Wickramasinghe, I.P.M and T.M.A.S. Perera (2006) A prototype fuzzy logic based diagnostic expert system for common respiratory diseases needing intensive care, Proceedings of the Peradeniya University Research Sessions (PURSE-2006).
  • Liyanage, S.R, Walgama,K.S., Goonasekara, C.D.A. and I.P.M. Wickramasinghe (2006) , A prototype fuzzy logic based diagnostic expert system for common respiratory diseases needing intensive care, Proceedings of the 8th International Information Technology Conference (IITC 2006), Colombo, Sri Lanaka.
  • Deegalla, S., Walgama, K.S. and Bostrom, H. (2006) A comparative study on principal component analysis and random projection for nearest neighbor classification, Proceedings of the Peradeniya University Research Sessions (PURSE-2006).
  • Jayatilake, N. and K.S. Walgama (2006) A frequency domain design technique to auto-tune PID controllers for second order integrator processes, Proceedings of the Peradeniya University Research Sessions (PURSE-2006).
  • Liyanage, S.R., Walgama, K.S. and Goonasekara, C.D.A., (2007) “A Prototype Diagnostic Expert System for Common Respiratory Diseases Using Dempster Shafer Theory.” Proceedings of the Annual Research Symposium 2007– Faculty of Graduate Studies, University of Kelaniya.
  • Liyanage, S.R., Walgama, K.S. and Goonasekara, C.D.A., (2008) “An Adaptive Fuzzy Logic Based Diagnostic Expert System For Critical Care Medicine”, Proceedings of International Information Technology Conference (IITC), October 2008, Colombo, Sri Lanka.
  • Wijesinghe, WAPA, J. Wijjayakulasooriya, and KS Walgama (2011), Algorithms for Automated Diagnosis of Heart Diseases using an Electronic Stethoscope, Proceedings of the Peradeniya University Research Sessions (PURSE-2011).
  • Deegalla, S, H. Bostrom and K. Walgama (2012), Choice of Dimensionality reduction methods for feature and classifier fusion with Nearest Neighbor Classifier, 15th International Conference on Information Fusion, 875 – 881.
  • Weeraddana, D.M., K.S. Walgama and EC Kulasekara (2013), Dempster-Shafer information filtering in multi-modality wireless sensor networks”, World Academy of Science, Engineering and Technology, Vol. 79, 644-651
  • Gunatillake, A, D.M. Weeraddana, K. Walgama and K. Samarasinghe (2013), Self Organizing of wireless sensor networks based on severity of an emergency environment”, 8th International Conference on Industrial and Information Systems (ICIIS), 483-488.
  • Wijerathne, W.D.C.C., Thevamaran, R., Walgama, K.S. and Shanthini, R. (2014) Reviving the traditional gingerly oil production (‘sekku’) technology using solar power. 1st International Conference, Wayamba University.
  • M. M. G. V. Shyamalee, K. S. Walgama (2015) Effects of sample size in prediction of expected employability skills of Engineering graduates, Proceedings of Peradeniya University International Research Session (iPURSE), Volume 19.

  • Research Reports
  • Walgama, K.S. (1983) "Design of a network interface unit" PII Report No. 1002,Reports Phillips International Institute, Eindhoven, The Netherlands.
  • Walgama, K.S. and Sternby, J. (1988) "Bouncing phenomenon in controllers with antiwindup compensators", Research Report, Div. Automatic Control, Luleå University of Technology, Sweden.
  • Walgama, K.S. and Sundquist, J. (1988) "System Identification - Theory and Methods", Technical Report, Div. Automatic Control, Luleå University of Technology, Sweden.
  • Walgama, K.S. and Kirubarajan, T. (1992) " On time varying tuned filters", Research Report, Dept. of Engineering Mathematics, Univ. of Peradeniya, Sri Lanka.
  • Walgama, K.S. (1993) " Time varying controllers for simultaneous rejection of periodic disturbances and stochastic noise", Research Report, Dept. of Engineering Mathematics, Univ. of Peradeniya, Sri Lanka.
  • Karunaratne, D.G.G.P. and Walgama, K.S. (1993) " Mathematical models and controller designs for Bioreactors", Research Report, Dept. of Engineering Mathematics, Univ. of Peradeniya, Sri Lanka (presented also at the SLASS annual conference, 1993).
  • Walgama, K.S. (1993) " Observer based predictors for processes with time delays", Research Report, Dept. of Engineering Mathematics, University of Peradeniya, Sri Lanka.
  • Ginige, T. and K.S. Walgama (1994) " Decision Feedback to Improve CPFSK Coherrent Optical Receiver Characteristics", Research Report, Dept. of Engineering Mathematics, University of Peradeniya, Sri Lanka.
  • Goonasekara, CDA and K.S. Walgama (2001) "Development of a Prototype Decision Support System for the Aid of Critical care clinical problems ", Final Report, National Science Foundation, Sri Lanka.
  • Books Published
  • How to Compost Kitchen Waste in Your Garden R. Shanthini and K.S. Walgama Published in 2003 by Engineering Design Centre, University of Peradeniya, Peradeniya, Sri Lanka, ISBN 955-8916-00-5
  • Research Awards
  • Award for Second best Research presentation at the Annual Research Sessions of Univ. of Peradeniya, 1997, for the paper Maithripala, S. and Walgama, K.S. (1997) "Optimal tuning of Anti-windup compensators",
  • Award for Best Research presentation by Senior Researchers under the category of Energy and Environment Sciences, at the Annual Research Sessions of Univ. of Peradeniya, 1998, for the paper Walgama, K.S., Ekanayake, J.B. and Atputharaja, A. (1998) "Development of Digital control system for current and Temperature control of an electrodialyser"
  • Recipient of Presidential Research Award 2000.
  • Research Supervision (Completed)
  • PhD thesis (from KTH, Sweden) of S. Alahakoon Digital Motion Control Techniques for Electrical Drives}, (2000) Co- Supervisors :- Prof. C. Sadarangani, Dr. L. Harnefors
  • MPhil thesis of S. Maithripala Optimisation based study of Antiwindup Compensators (2000)
  • MPhil thesis ACS Wijeyatilake Sensorless Control of Induction Motors for Industrial Applications, ( 2004). Co-Supervisors:- Dr. AMUSK Alahakoon, Dr. SG Abeyratne
  • MPhil Thesis of M. Vignarajha Finite Element Non-linear Analysis of Cables(2005) Co-suppervisor:- Prof. MP Ranaweera
  • MPhil Thesis of M. Wickramasingha Neural Modelling and Rule based control of an Open channel feeding a small forebay(2006)
  • MPhil Thesis of S. Liyanage Development of a prototype for Fuzzy Logic based Medical Decision Support System (2009). Co-supervisor:- Prof. CDA Goonasekara
  • Tech. Lic Thesis ( Technical Licentiate Degree (MPhil equivalent) from Stockholm University, Sweden,) S. Deegalla Towards Improving Performance of Nearest Neighbour Classification in High Dimensions (2009). Co supervisor:- Prof. Henrik Bostrom
  • MPhil thesis of N. Jayatilake Implementation issues of Auto tuning PID Controllers ( 2010)
  • Research Supervision (On Going)
  • PhD Thesis of S. Deegalla Data mining in High Dimensions Co supervisor:- Prof. Henrik Bostrom
  • PhD Thesis of M.M.G.V. Shyamalee Methodology for outcome based assessment of the contribution of industrial training for entry level Engineering Graduates Co supervision:- Dr. WMVSK Wickramasinghe and Prof. S. Dissanayake
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