Office: 106 Fluor Daniel Building
Fax: (864) 656-5620
Email: atul@clemson.edu
Ph.D. Mech. Engg., Old Dominion University, Norfolk, VA, USA, August 1993
M.S. Mech. Engg., Old Dominion University, Norfolk, VA, USA, April 1990
B.S. Mech. Engg., University of Pune, Pune, India, June 1984
His research portfolio spanned wide spectrum of application areas ranging from robotics, aerospace systems, vibration and acoustics, to control of building energy systems and renewable energy. His research has also led to creation of several patents in these areas. Moreover, Dr. Kelkar has successfully transitioned these patented technologies to commercial products. His breadth of the research program is evident from interdisciplinary research work through several collaborations on- and off-campus. His collaborations include joint projects with faculty from Chemistry, Physics, Ag and Biosystems, Aerospace, and Electrical Engineering and with several faculty and NASA researchers off-campus.
[1] A. G. Kelkar and S. M. Joshi. Robust control of nonlinear flexible multibody systems using quaternion feedback and dissipative compensation. NASA Technical Memorandum, (TM-109099), April 1994.
[2] S. M. Joshi and A. G. Kelkar. Three-axis stabilization of spacecraft using parameter-independent nonlinear quaternion feedback. NASA Technical Memorandum, (TM-109150), September 1994.
[3] A. G. Kelkar. Mathematical modeling of a class of multibody flexible space structures. NASA Technical Memorandum, (TM-109166), December 1994.
[4] A. G. Kelkar, S. M. Joshi, and T. E. Alberts. Dissipative controllers for nonlinear multibodyflexible space systems. Journal of Guidance, Control, and Dynamics, 18(5):1044–1052, 1995.
[5] S. M. Joshi, A. G. Kelkar, and P. G. Maghami. A class of stabilizing controllers for flexible multibody systems. NASA Technical Paper -3494, May 1995.
[6] A. G. Kelkar, S. M. Joshi, and T. E. Alberts. Passivity-based controllers for flexible multibody systems. IEEE Transactions on Automatic Control, 40(5):910–914, May 1995.
[7] S. M. Joshi, A. G. Kelkar, and J.-T. Wen. Robust attitude stabilization of spacecraft using nonlinear quaternion feedback. IEEE Transaction on Automatic Control, 40(10):1800–1803, October 1995.
[8] S. M. Joshi, P. G. Maghami, and A. G. Kelkar. Design of dynamics dissipative compensators for multibody flexible space structures. IEEE Transactions on Aerospace and Electronic Systems,31(4):1314–1324, October 1995.
[9] A. G. Kelkar, S. M. Joshi, and T. E. Alberts. Dynamic dissipative compensators for multibodyflexible space structures. IEEE Transactions on Aerospace and Electronic Systems, 31(4):1325–1330, October 1995.
[10] S. M. Joshi and A. G. Kelkar. On longitudinal control of high speed aircraft in the presence of aeroelastic modes. NASA Technical Memorandum, (TM-110254), 1996.
[11] A. G. Kelkar and S. M. Joshi. Global stabilization of flexible multibody spacecraft using quaternion-based nonlinear control law. Journal of Guidance, Control, and Dynamics, 19(5):1186–1188, 1996.
[12] S. M. Joshi and A. G. Kelkar. Robust control of a class of passive nonlinear systems. Technical Report TM 110287, NASA Technical Memorandum, October 1996.
[13] A. G. Kelkar. On the dynamics and control of flexible multi-body nonlinear space systems.IMechE, (C553/027):343–352, 1998.
[14] S. M. Joshi and A. G. Kelkar. Inner loop control of supersonic aircraft in the presence of aeroelastic modes. IEEE Transactions on Control System Technology, 6(6):730–739, November1998.
[15] A. Isidori, S. M. Joshi, and A. G. Kelkar. Asymptotic stability of interconnected passivenon-linear systems. International Journal of Robust and Nonlinear Control, 9:261–273, 1999.
[16] A. G. Kelkar and S. M. Joshi. Passivity-based robust control with application to benchmark active controls technology wing. AIAA Journal of Guidnace, Control, and Dynamics, 23(5):938–947, 2000.
[17] A. G. Kelkar, Y. Mao, and S. M.Joshi. Synthesis of lq-optimal constant-gain positive-real controllers. Control and Intelligent Systems, 29(3):65–73, 2001.
[18] H. R. Pota and A. G. Kelkar. On perfect acoustic noise cancelling control. IASTED Journalof Intelligent Systems and Control, 28, No.2, pp. 48-54(2):48–54, 2001.
[19] H. R. Pota and A. G. Kelkar. Modelling and control of acoustic ducts. ASME Journal of Vibration and Acoustic, 123(1):2–10, January 2001.
[20] S. M. Joshi and A. G. Kelkar. Passivity-based robust control of systems with redundant sensors and actuators. International Journal of Control, 74(5):474–481, March 2001.
[21] S. Woodard, A. G. Kelkar, and G. Koganti. Multidisciplinary concurrent design optimization via the internet. NASA Technical Memorandum, (TM-2001-210644), March 2001.
[22] F. Andreev, D. Auckley, S. V. Gosavi, L. Kapitanski, A. G. Kelkar, and W. N. White. Matching, linear systems, and the ball and beam. Automatica, 38(12):2147–2152, 2002.
[23] S. M. Joshi, D. E. Cox, and A. G. Kelkar. Robust control of uncertain systems via norm and sector-bounded lqg-type controllers. International Journal of Optimization Theory and Applications, 113(2):269–282, May 2002.
[24] S. M. Joshi and A. G. Kelkar. Design of norm bounded and sector-bounded lqg controllers for uncertain systems. International Journal of Optimization Theory and Applications, 113(2):269–282, May 2002.
[25] P. Krishnaswami and A. G. Kelkar. Optimal design of controlled multibody dynamic systems for performance, robustness, and tolerancing. Engineering with Computers, 19:26–34, 2003.
[26] H. R. Pota, I. R. Petersen, and A. G. Kelkar:. Robust control of a 2-d acoustic enclosure. ASME Journal of Vibration and Acoustics, 125:1–10, 2003.
[27] A. G. Kelkar and H. R. Pota. Robust broadband control of acoustic noise in ducts: a passvity-based approach. International Journal of Noise Control Engineering, 51(2):97–105, March-April 2003.
[28] N. Manjarekar, R. N. Banavar, and A. G. Kelkar. Robust passification using norm bounded uncertainty models. IEEE Transactions on Control System Technology, 2:1327 – 1332, 23-25 June 2003.
[29] B. Fang, A. G. Kelkar, S. M. Joshi, and H. R. Pota. Modeling and control of acoustic noise in 3-d enclosures with acoustic-structure interaction. Control Engineering Practice, Elsevier Publication, 12(Special Issue On Emerging Technologies for Active Noise and Vibration Control Systems):989–1004, 2004.
[30] A. G. Kelkar and S. M. Joshi. Control of elastic systems via passivity-based methods. Journal of Vibration and Control, 10:1699–1735, 2004.
[31] S.V.Gosavi and A. G. Kelkar. Modelling, identification, and passivity-based robust control of piezo-actuated flexible beam. ASME Journal of Vibration and Acoustics, 126(2):260–271, April 2004.
[32] Marco B. Quadrelli, Jerry Langmaier, Edward Mettler, Konstantin Gromov, Emmanuell Murray (JPL), Don Soloway, Bill Walz Atul Kelkar (ARC), Bill Lightsey, Brent Beabout, and Kevin Betts (MSFC). Aacs tb2.5 trades study report. Technical Report JIMO Document
3457-04-012, Prepared For Jupiter Icy Moons Orbiter Project, Jet Propulsion Laboratory, California Institute of Technology, Pasedena, CA, September 2004.
[33] R. C. Fales, E. Spencer, K. Chipperfield, F. Wagner, and A. G. Kelkar. Modeling and control of a wheel loader with a human-in-the-loop assessment using virtual reality. ASME Journal of Dynamic Systems Measurement and Control, 127:415–423, 2005.
[34] J. Shi, A. G. Kelkar, and D. Soloway. Stable reconfigurable generalized predictive control of with application to flight control. ASME Journal of Dynamic Systems Measurement and Control, 128(371-378), 2006.
[35] Jay Shi and Atul Kelkar. A dissipative control design for jupiter icy moons orbiter. Journal of Dynamic Systems Measurement and Control, 129(4):559–565, 2007.
[36] H. Porumamilla, A. G. Kelkar, and J. M. Vogel. Modeling and verification of an innovative active pneumatic vibration isolation system. ASME Journal of Dynamic Systems, Measurement,and Control, 130(3):1–12, 2008.
[37] D. Soloway, J. Shi, and A. G. Kelkar. Gpc-based stable reconfigurable control. NASA Technical Paper, (2008-215358), 2008.
[38] T. Waite, Q. Zou, and A. G. Kelkar. Inversion-based feedforward approach to broadband acoustic noise reduction. ASME Journal of Vibration and Acoustics, 130(051010):1–7, 2008.
[39] Jay Shi and Atul Kelkar. Feedback linearization based generalized predictive control of jupiter icy moons orbiter. ASME Journal of Dynamic Systems, Measurement, and Control, 131:011003–0110013, 2009. (One of the Ten Most Downloaded articles from the journal in
January 2009).
[40] Roger Fales and Atul Kelkar. Robust control design for a wheel loader using h-infinity and feedback linearization based methods. ISA Transactions,Published by Elsevier Ltd., February 2009.
[41] Roger Fales and Atul Kelkar. Robust control design for a wheel loader using h-infinity and feedback linearization based methods. ISA Transactions, 48(3):312–320, July 2009.
[42] Manoj Karkee, Brian Steward, Atul Kelkar, and Zachery Kemp. Modeling and real-time simulation architectures for virtual prototyping of off-road vehicles. Springer-Verlag Journal SI: Manufacturing and Construction, (DOI 10.1007/s10055-009-0150-1), December 2009.
[43] M. Karkee, M. Monga, B. L. Steward, J. Zambreno, and A. G. Kelkar. Real-time simulation and visualization architecture with field programmable gate array (fpga) simulator. Product Design and Manufacturing, (ISBN: 978-0-7918-4908-8):219–227, 2010.
[44] Manoj Karkee, Brian L. Steward, Atul Kelkar, and Zachery Kemp III. Modeling and real-time simulation architectures for virtual prototyping of off-road vehicles. Virtual Reality, 15:83–96, 2011.
[45] W. D. Robinson, A. G. Kelkar, and J. M. Vogel. Semi-active control methodology for suspension vibration control of an air spring-valve-accumulator system. Journal of Vibration and Control, 2015. (in review).
[46] J. Carrigan, A. G. Kelkar, and P. Krishnaswami. Integrated design of controlled mechanisms for performance, robustness, sensitivity, and manufacturability. Journal of Optimization, 2016. (under revision).
[47] D. Robinson and A. G. Kelkar. H-infinity design for hydraulic front wheel drive speed control of a motor grader. IEEE Transactions on Control System Technology, 2016. (in review).
[48] Jay Shi and Atul Kelkar. Comparison of controllers for nonlinear model of jupiter icy moons orbiter,. ASME Journal of Dynamic Systems, Measurement, and Control, 2016. (under revision).
[49] R. C. Fales, E. Spencer, and A. G. kelkar. Robust control design for a construction machine using lqg and h-infinity based methods. ASME Journal of Dyanamic Systems, Measurement, and Control, 2016. (under revision).
[50] A. G. Kelkar, Y. Mao, and S. M.Joshi. Lmi-based passification for control of nonpassive systems. Automatica, 2016. (in review).
[51] Dan Robinson and Atul Kelkar. Modeling and experimental validation of pneumatic air-spring valve accumulator system for semi-active suspension. ASME Journal of Dynamic Systems and Control, 2016. (in review).
[52] Punit Tulpule and Atul Kelkar. Integrated robust optimal design using bmi approach via sensitivity minimization. ASME Journal of Dynamic Systems, Measurement, and Control, 136(3):031012–1 to 031012–8, May 2014.
[53] F. Liu, B. Fang, and A. G. Kelkar. Energy extraction-based robust linear quadratic gaussian control of acoustic-structure interaction in three-dimensional enclosure. ASME Journal of Vibration and Acostics, 136(4):041008–1to 041008–8, August 2014.
[54] S. M. Joshi and A. G. Kelkar. Spacecraft stabilization and control for capture of non-cooperative space objects. NASA Publications, (NASA TM 218668), December 2014.
[55] Yuan Xue, Shuai Zhou, Robert C. Brown, Atul Kelkar, and Xianglan Bai. Fast pyrolysis of biomass and waste plastic in a fluidized bed reactor. Fuel, 156:40–46, 2015.
[56] Yuan Xue, Atul Kelkar, and Xianglan Bai. Catalytic co-pyrolysis of biomass and polyethylene in a tandem micropyrolyzer. Fuel, 2015.
[57] David Asjes, Amit Diwadkar, Umesh Vaidya, and Atul Kelkar. Development and system analysis of a two-dimensional rotational freeplay nonlinearity model. AIAA Journal of Aircraft, 53(3):860–865, 2016.
[58] Punit Tulpule and Atul Kelkar. Robust feedback linearization for nonlinear systems with parametric uncertainties using sensitivity dynamics. ASME Journal of Dynamic Systems and Control, 2016. (in review).
[59] V. Chinde, K. Krishna, Atul Kelkar, R. Pasumarthy, S. Sarkar, and N.M. Singh. A passivity-based power shaping control of building hvac systems. ASME Journal of Dynamic Systems and Control, 2017. (accepted- to appear).
[60] Xue Y, Kelkar A, and Bai X. Catalytic co-pyrolysis of biomass and polyethylene in a tandem micropyrolyzer. Fuel, 166:227–236., 2016. (IF: 3.611).
[61] Krishna C. Kosaraju, Venkatesh Chinde, Ramkrishna Pasumarthy, Atul Kelkar, and Navdeep Singh. A passivity-based approach to social welfare problem for building energy systems” by. IEEE Control Systems Letters, 2017. (accepted - in revision).
