DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
PONDICHERRY ENGINEERING COLLEGE

PONDICHERRY




Dr.K.Ramakrishnan, B.E.,M.E.,Ph.D
Associate Professor
Phone: 0413-2655281-288, Extn.:518
E-mail:ramakrishnan@pec.edu




Educational Profile:
Ph.D.(2014)
Guide : Prof.Goshaidas Ray
Title : Robust Stability Stabilization of Dynamical State Delayed Systems
Department : Electrical and Electronics Engineering
Institution : IIT,Karagpur,West Bengal
 
M.E(1995)
Course : Control System Engineering
Class : First Class with Distinction
Institution : PSG College of Technology ,Coimbatore
University : Bharathiyar University
 
B.E(1993)
Course : Electrical and Electronics Engineering
Class : First Class with Distinction
Institution : Government Colllege of Technology , Coimbatore
University : Anna University
 
 

Publications:
International Journals:
  1. K. Ramakrishnan and G. Ray, "Robust non-fragile stabilizing controller for an uncertain stochastic nonlinear system with interval time-varying state-delays: Prescribed H performance level," Journal of Dynamic Systems, Measurements and Control, Vol. 136, 054506 (1-3), September 2014. (Transactions of the American Society of Mechanical Engineers (ASME))
  2. K. Ramakrishnan and G. Ray, "Robust stability criteria for a class of uncertain discrete-time systems with time-varying delay," Applied Mathematical Modelling, Vol. 37, No. 3, pp. 1468 - 1479, February 2013. (Elsevier)
  3. K. Ramakrishnan and G. Ray, "Robust stability criterion for Markovian jump systems with nonlinear perturbations and mode-dependent time-delays," International Journal of General Systems, Vol. 41, No. 4, pp. 373 - 393, May 2012. (Taylor and Francis)
  4. K. Ramakrishnan and G. Ray, "An Improved delay-dependent stability criterion for a class of Lur'e systems of neutral type," Journal of Dynamic Systems Measurement and Control, Vol. 134, No. 1, pp. 011008 (6 pages), January 2012. (Transactions of the American Society of Mechanical Engineers (ASME))
  5. K. Ramakrishnan and G. Ray, "Stability criteria with less LMI variables for linear system with additive time-delays," Journal of Applied. Mathematics and Computation, Vol. 36, No. 1-2, pp. 263 - 274, August 2011. (Springer)
  6. K. Ramakrishnan and G. Ray, "Stability criterion with less LMI variables for linear discrete-time systems with additive time-delays," International Journal of Automation and Computing, Vol. 8, No. 4, pp. 490 - 492, November 2011. (Springer)
  7. K. Ramakrishnan and G. Ray, "Delay-range-dependent stability criterion for interval time-delay systems with nonlinear perturbations," International Journal of Automation and Computing, Vol. 37, No. 1, pp. 141-146, February 2011. (Springer)
  8. K. Ramakrishnan and G. Ray, "Robust stability criteria for uncertain linear systems with interval time-varying delay," Journal of Control Theory and Applications, Vol. 9, No. 4, pp. 123-130, September 2011. (Springer)
  9. K. Ramakrishnan and G. Ray, "Robust stability criteria for uncertain neutral systems with interval time-varying delay," Journal of Optimization Theory and Applications, Vol. 149, No. 2, pp. 366-384, May 2011. (Springer)
  10. K. Ramakrishnan and G. Ray, "Improved stability criteria for Lurie type systems with time-varying delay," Acta Automatica Sinica, Vol. 37, No. 5, pp. 541-544, May 2011. (Elsevier)
  11. K. Ramakrishnan and G. Ray, "Improved delay-range-dependent robust stability criteria for a class of Lur'e systems with sector-bounded nonlinearity," Journal of The Franklin Institute, Vol. 348, No. 8, pp. 1769-1786, October 2011. (Elsevier)
  12. K. Ramakrishnan and G. Ray, "Robust H Controller Synthesis for Linear Uncertain Systems with Interval Time-delay: A Less Conservative Result,'' International Journal of Control and Automation, Vol. 4, No. 4, pp. 39 - 54, December 2011. (SERSC, South Korea)
  13. K. Ramakrishnan, "A fast synergetic control algorithms for linear continuous-time systems - an observer based state feedback approach," Advances in Modelling, C. Automatic Control, Vol. 62, No. 2, pp. 40 - 50, 2007

National Journals:

International Conferences:
  1. K. Ramakrishnan and G. Ray, "Robust Stability Criteria for Uncertain Linear Systems with Time-Varying Delay," IVth International Conference on Trends in Measurements and Automation TIMA 2009, Madras Institute of Technology, Anna University, Chennai January 4-6, 2009.
  2. K. Ramakrishnan and G. Ray, "Delay-dependent Stability Analysis of Linear Systems with Additive Time-varying Delays," IEEE International Conference on Automation Science and Engineering CASE 2009, Robotics and Automation Society, Indian Institute of Science, Bangalore, Vol. 1, pp. 122 - 126, August 22-25, 2009.
  3. K. Ramakrishnan and G. Ray, "Delay-dependent Robust Stability Criteria for Linear Uncertain Systems with Interval Time-varying Delay," IEEE International Conference TenCon 2009, Suntec Convention Centre, Singapore, November 23-26, 2009.
  4. K. Ramakrishnan and G. Ray, "Delay-dependent Stability Criteria for Linear Systems with Multiple Time-varying Delays," IEEE International Conference TenCon 2009, Suntec Convention Centre, Singapore, November 23-26, 2009.
  5. K. Ramakrishnan and G. Ray, "Robust Stability Criterion for Linear Systems with Interval Time-varying Delay," International Conference on System Dynamics and Control ICSDC 2010, Manipal Institute of Technology, Manipal, Karnataka, Vol. 1, pp. 1- 6, October 2010.
  6. K. Ramakrishnan and G. Ray, "An Improved Delay-dependent Stability Criterion for Neutral Systems with Mixed Time-delays and Nonlinear Perturbations," Annual India IEEE Conference INDICON 2010, December 17-19, 2010.
  7. K. Ramakrishnan and G. Ray, "Further Improvement in Delay-range-dependent Stability Criterion for Linear Systems with Time-varying Delay," Annual India IEEE Conference INDICON 2010, December 17-19, 2010.
  8. K. Ramakrishnan and G. Ray, "Delay-range-dependent Stability Criteria for Lure Systems with Interval Time-varying Delay," 49th IEEE Conference on Decision and Control CDC 2010, Hilton Atlanta Hotel, Atlanta, GA, USA, December 15-17, 2010, pp. 170-175 (presented by G. Ray).
  9. K. Ramakrishnan and G. Ray, "Robust controller synthesis for a class of uncertain linear systems with interval time-varying delay," International Conference on Advances in Control and Optimization of Dynamical Systems, Dept. of Aerospace Engineering, Indian Institute of Science, Bangalore, February 16-18, 2012.
  10. K. Ramakrishnan and G. Ray, "Reciprocal convex approach to delay-dependent stability of uncertain discrete-time systems with time-varying delay," The 2012 American Control Conference ACC2012, Montréal, Canada, June 27-29, 2012, pp. 5450-5453 (presented by G. Ray).
  11. K. Ramakrishnan and G. Ray, "Delay-dependent non-fragile H_? robust control for a class of uncertain stochastic nonlinear systems," 7th IEEE International Conference on Industrial and Information Systems ICIIS 2012, Indian Institute of Technology, Chennai, August 6-9, 2012.
  12. K. Ramakrishnan and G. Ray, "Robust H_? Filter Design for a Class of Uncertain Systems with Time-varying State-delays," 7th IEEE International Conference on Electrical and Computer Engineering ICECE 2012, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh, December 20-22, 2012 (presented by G. Ray).

Experience:
Professional Experience:
  1. Assistant Professor in Electrical and Electronics Engineering, Pondicherry Engineering College (April 2011 - till date).
  2. Senior Lecturer in Electrical and Electronics Engineering, Pondicherry Engineering College (April 2006 - April 2011).
  3. Lecturer in Electrical and Electronics Engineering, Pondicherry Engineering College (April 2001 - April 2006).
  4. Assistant Engineer, Electrical (Grid Relay Testing), Tamil Nadu Electricity Board (May 1995 - April 2001).
  5. Research Engineer Trainee, Fluid Control Research Institute (United Nations Development Project - Ministry of Defence and Heavy Industry, Govt. of India), Palakkad, Kerala (February 1995 - April 1995).

Academic and Administrative Responsibilities:

Projects and Research Guidance :
Areas of Research:
  1. Control Theory and Applications

Books Authored :
  1. K. Ramakrishnan and G. Ray, "An Improved Delay-dependent Robust Stability Criterion for Uncertain Neutral Systems with Time-Varying Delays," ICLICC 2011, Communications in Computer and Information Science (CCIS) 140 (Springer-Verlag Berlin Heidelberg) pp. 11-18 (2011).
  2. K. Ramakrishnan and G. Ray, "An Improved Delay-dependent Robust Stability Criterion for Uncertain Neutral Systems with Time-Varying Delays," ICMMSC 2012, Communications in Computer and Information Science (CCIS) 283 (Springer-Verlag Berlin Heidelberg) pp. 210-219 (2012).
M.tech Project Guidance
  1. R. Swathna, 'Robust Delay-Dependent Stability Analysis of Shunt Active Power Filter', 2014.
  2. R. Sudarajan, 'Robust Stability and Stabilization of Uncertain Discrete-Time System with Feedback Loop Delays', 2013.
  3. S. Vijayakumar, 'Digital redesign of continuous-time systems: an observer based approach', 2008.
  4. K. Sivanandakumar, 'LMI based digital redesign of Linear Continuous-time Systems', 2007.
  5. K. Arasu, 'State feedback control scheme for WECS', 2005.

Courses / Conferences Attended :
  1. 'Energy Technology and Policy', AICTE-ISTE Sponsored STTP at Coimbatore Institute of Technology, Coimbatore from 12 - 18 May 2008.
  2. 'Power Electronics and Renewable Energy Electric Conversion Systems', MHRD-AICTE sponsored STTP at National Institute of Technology, Tiruchirappalli from 16 - 28 June 2008.
  3. 'Statistical Modelling for Data Analysis', MHRD-AICTE sponsored STTP at Indian Institute of Technology, Kharagpur from 30 November 2009 - 11 December 2009.
  4. 'Digital Control', QIP STTP at Indian Institute of Technology Bombay, Mumbai, June 2005.
  5. 'Numerical Techniques in Linear Algebra', AICTE STTP at Indian Institute of Technology, Chennai, December 2006.
  6. 'Renewable Energy Materials and Their Industrial Applications', AICTE Sponsored STTP at Indian Institute of Technology Kharagpur, West Bengal from 05-16 November 2012.

Professional Activities:
Reviewer of the following:
  1. Automatica (IFAC Elsevier Journal).
  2. IET Control Theory and Applications.
  3. Journal of Circuits, Systems and Signal Processing (Springer).
  4. Journal of Optimization Theory and Applications (Springer).
  5. COMPEL (Emerald, UK).
  6. Reviewer for IEEE International Conference Process Automation Control and Computation PACC 2011, Coimbatore Institute of Technology, Coimbatore.

Courses taught:
PG Level Courses:
  1. Modern Control Theory
  2. Digital Control Systems
  3. Controller Design Techniques

UG Level Courses :
  1. Linear Control Systems
  2. Circuit Theory
  3. Electronic Circuits
  4. Analog and Digital Integrated Circuits
  5. Measurements and Instrumentation

Laboratory :
  1. Electronics Lab - I (Devices Lab)
  2. Electronics Lab - II (Discrete Electronic Circuits and Digital Experiments)
  3. Electronics Lab - III (Analog IC Experiments)