PUBLICATIONS OF ASOK RAY

Refereed Journal Publications
  Books
Sections of Books
  Patents
Invited Lectures


BB Refereed Journal Publications

  1. A. Ray and H.F. Bowman, "A Nonlinear Dynamic Model of a Once-through Steam Generator," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 98, No. 3, September 1976, pp. 322-329.
  2. Y. Lin, R.S. Nielsen and A. Ray, "Fuel Controller Design in a Once-through Subcritical Steam Generator," ASME Journal of Engineering for Power, Vol. 100, No. 1, January 1978, pp. 189-196.
  3. A. Ray, "On the Application of Modern Control to Power Plants," Comment on "Articles on Power Plant Control" by R.A. Smoak  in ASME Journal of Dynamic Systems, Measurement and Control, Vol. 100, No. 1, March 1978, p. 94.
  4. A. Ray, "Identification of an Industrial Process by Numerical Inversion of the Laplace Transform," IEEE Trans. on Industry Applications, Vol. IA-14, No. 2, March-April 1978, pp. 111-115.
  5. A. Ray and H.F. Bowman, "Digital Simulation of a High Temperature Gas-Cooled Reactor (HTGR) Steam Power Plant," IEEE Trans. on Nuclear Science, Vol. NS-25, No. 4, August 1978, pp. 1068-1077.
  6. A. Ray, D.A. Berkowitz and V.H. Sumaria, "Modeling and Simulation of a Multicell Fluidized Bed Steam Generator," AIAA Journal of Energy, Vol. 2, No. 5, September-October 1978, pp. 269-278.
  7. A. Ray, "Approximation of Fundamental Equations for Finite-Dimensional Modeling of Thermo-fluid Processes," ASME Journal of Engineering for Power, Vol. 100, No. 4, October 1978, pp. 722-723.
  8. A. Ray, "Modeling and Simulation of a Relief Valve," Simulation, November 1978, pp. 167-172.
  9. A. Ray, "Modeling of an HTGR Steam Power Plant," Applied Mathematical Modelling, Vol. 3, October 1979, pp. 391-394.
  10. A. Ray and D.A. Berkowitz, "Design of a Practical Controller for a Commercial Scale Fossil Power Plant," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 101, No. 4, December 1979, pp. 284-289.
  11. A. Ray, D.A. Berkowitz and V.H. Sumaria, "Nonlinear Dynamic Model of a Fluidized Bed Steam Generation System", ASME Journal of Engineering for Power, Vol. 102, No. 1, January 1980, pp. 202-208.
  12. A. Ray, "Dynamic Modelling of Power Plant Turbines for Controller Design," Applied Mathematical Modelling, Vol. 4, April 1980, pp. 109-112.
  13. A. Ray, "Automated Finishing of Steel Castings," The Industrial Robot, September 1980, pp. 172-174.
  14. A. Ray, "Dynamic Modelling of Once-through Steam Generator for Solar Applications," Applied Mathematical Modelling, Vol. 4, December 1980, pp. 417-423.
  15. A. Ray, "Updating the Control Systems of a Trallfa Industrial Robot," The Industrial Robot, September 1981, pp. 166-170.
  16. A. Ray, "Nonlinear Dynamic Model of a Solar Steam Generator," Solar Energy, Vol. 26, 1981, pp. 297-306.
  17. A. Ray, M. Desai and J.J. Deyst, "Fault Detection and Isolation in a Nuclear Reactor," AIAA Journal of Energy, Vol. 7, No. 1, January-February 1983, pp. 79-85.
  18. A. Ray, J.A. Bernard and D.D. Lanning, "Computer Control of Power in a Nuclear Reactor," IEEE Trans. on Nuclear Science, Vol. NS-30, No. 1, February 1983, pp. 820-824.
  19. J.C. Deckert, J.L. Fisher, D.B. Laning and A. Ray, "Signal Validation for Nuclear Power Plants," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 105, No. 1, March 1983, pp. 24-29.
  20. A. Ray, M. Desai and J.J. Deyst, "On-line Fault Diagnosis in a Nuclear Reactor by Sequential Testing," IEEE Trans. on Nuclear Science, Vol. NS-30, No. 3, June 1983, pp. 1850-1855.
  21. A. Ray, R. Geiger, M. Desai and J. Deyst, "Analytic Redundancy for On-line Fault Diagnosis in a Nuclear Reactor", AIAA Journal of Energy, Vol. 7, No. 4, July-August 1983, pp. 367-373.
  22. J. Fischer, A. Ray, R. Ornedo, E. Kujawski and S.M. Divakaruni, "Signal Validation for a BWR Suppression Pool," Trans. Am. Nuc. Soc., Vol. 44, August 1983, pp. 50-52.
  23. J.A. Bernard, A. Ray and D.D. Lanning, "Digital Computer Control of a Nuclear Reactor," Trans. Am. Nuc. Soc., Vol.44, August 1983, pp. 64-66.
  24. J.A. Bernard, D.D. Lanning, K. Kwok and A. Ray, "Demonstration of Decision Analysis Techniques for Steady-state Reactor Control," Trans. Am. Nuc. Soc., Vol. 45, October-November 1983, pp. 661-662.
  25. J.A. Bernard, A. Ray and D.D. Lanning, "Digital Computer Control of Power Transients in a Nuclear Reactor," IEEE Trans. on Nuclear Science, Vol. NS-31, No. 1, February 1984, pp. 701-705.
  26. A. Ray and M. Desai, "A Calibration and Estimation Filter for Multiply Redundant Measurement Systems," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 106, No. 2, June 1984, pp. 149-156.
  27. J.A. Bernard, D.D. Lanning and A. Ray, "Use of Reactivity Constraints for Automatic Control of Reactor Power," IEEE Trans. on Nuclear Science, Vol. NS-32, No. 1, February 1985, pp. 1036-1040.
  28. D.D. Lanning, J.A. Bernard, J.H. Hopps and A. Ray, "MITR-II: Integrated Fault-tolerant Systems -- Implementation and Experiments," Trans. Am. Nuc. Soc., Vol. 49, June 1985, pp. 377-378.
  29. J.A.Bernard, D.D. Lanning and A. Ray, "The Nuclear Industry and Digital Control: An Unrealized Opportunity," InTech, September 1985, pp. 61-64.
  30. A. Ray, "A Microcomputer-based Fault-tolerant Control System for Industrial Applications," IEEE Trans. on Industry Applications, Vol. IA-21, No. 5, September-October 1985, pp. 1276-1283.
  31. A. Ray and M. Desai, "A Redundancy Management Procedure for Fault Detection and Isolation," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 108, No. 3, September 1986, pp. 248-254.
  32. A. Abo-Ismail and A. Ray, "Effect of Nonlinearities on the Transient Response of an Electrohydraulic Position Control Servo," Journal of Fluid Control, Vol. 17, No. 3, April 1987, pp. 59-79.
  33. N. Nayak, A. Ray and A.N. Vavreck, "An Adaptive Real-Time Intelligent Seam Tracking System," SME Journal of Manufacturing Systems, Vol. 6, No. 3, September 1987, pp. 241-245.
  34. A. Ray, "Performance Analysis of Medium Access Control Protocols for Distributed Digital Avionics," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 109, No. 4, December 1987, pp. 370-377.
  35. A. Ray, S.H. Hong, S. Lee and P. Egbelu, "Discrete-event Continuous-time Simulation of Distributed Digital Control Systems," Trans. Society of Computer Simulation, Vol. 5, No. 1, January 1988, pp. 71-85.
  36. D.R. Thompson, A. Ray and S.R.T. Kumara, "A Hierarchically Structured Knowledge-based System for Welding Automation and Control," ASME Journal of Engineering for Industry, Vol. 110, No. 1, February 1988, pp. 71-76.
  37. A. Ray, "Distributed Data Communication Networks for Real-Time Process Control," Chemical Engineering Communications, Vol. 65, March/April 1988, pp. 139-154.
  38. A. Ray and S. Phoha, "A Service Access Procedure (SAP) for a Transport Layer Protocol," Telematics and Informatics, Vol.5, No. 1, April 1988, pp. 65-73.
  39. A. Ray, "Networking for Computer-Integrated Manufacturing," IEEE Network Magazine: Special Issue on Communications for Manufacturing, Vol. 2, No. 3, May 1988, pp. 40-47.f
  40. A. Ray and M. Desai, "Fault Detection Using a Linear Algebraic Approach," Linear Algebra in Signals, Systems and Control, SIAM Publication, Philadelphia, ed. B. N. Datta et al., May 1988, pp. 627-641.
  41. H.E. Watson and A. Ray, "Laser-based Robotics for Automation and Precision Measurements," CIM Review, Vol. 4, No. 4, Summer 1988, pp. 40-46.
  42. A. Ray, "Network Access Protocols for Real-time Distributed Control Systems," IEEE Trans. on Industry Applications, Vol. 24, No. 5, September-October 1988, pp. 897-904.
  43. H.P. Polenta, A. Ray and J.A. Bernard, "Microcomputer-Based Fault Detection Using Redundant Sensors," IEEE Trans. on Industry Applications, Vol. 24, No. 5, September-October 1988, pp. 905-912.
  44. Y. Halevi and A. Ray, "Integrated Communication and Control Systems: Part I -- Analysis," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 110, No. 4, December 1988, pp. 367-373.
  45. A. Ray and Y. Halevi, "Integrated Communication and Control Systems: Part II -- Design Considerations," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 110, No. 4, December 1988, pp. 374-381.
  46. L-W. Liou and A. Ray, "Integrated Communication and Control Systems: Part III -- Non-Identical Sensor and Controller Sampling," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 112, No. 3, September 1990, pp. 357-364.
  47. A. Ray, "Introduction to Networking for Integrated Control Systems," IEEE Control System Magazine, Vol. 9, No. 1, January 1989, pp. 76-79.
  48. A. Ray and S. Phoha, "Research Directions in Computer Networking for Manufacturing Systems," ASME Journal of Engineering for Industry, Vol. 111, No. 2, May 1989, pp. 109-115.
  49. A. Ray, "Sequential Testing for Fault Detection in Multiply-Redundant Systems," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 111, No. 2, June 1989, pp. 329-332.
  50. R.M. Edwards, A. Ray, M.A. Schultz and E.S. Kenney, "A Concept of Integrated Control for Nuclear Power Plants," Trans. Am. Nuc. Soc., Vol. 59, June 1989, pp. 290-291.
  51. A.N. Vavreck, N. Nayak, E.D. Bushway and A. Ray, "An Adaptive Seam Tracker for Welding Heavy-Section Aluminum," IEEE Trans. on Industry Applications, Vol. 25, No. 4, July/August 1989, pp. 658-663
  52. S.H. Hong and A. Ray, "Analysis and Simulation of the Priority Scheme in Token Bus Protocols," Computer Communications, Vol. 13, No. 3, April 1990, pp. 157-164.
  53. R.M. Edwards and A. Ray, "Concept of A Computer Network Architecture for Complete Automation of Nuclear Power Plants," Trans. Am. Nuc. Soc., Vol. 61, June 1990.
  54. Y. Halevi and A. Ray, "Performance Analysis of Integrated Communication and Control System Networks," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 113, No. 3, September 1990, pp. 365-371.
  55. R. Luck and A. Ray, "An Observer-Based Compensator for Distributed Delays," Automatica, Vol. 26, No. 5, September 1990, pp. 903-908.
  56. A. Ray, "Multi-level Hypotheses Testing for Signal Validation in Continuous-Time Processes," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 112, No. 4, December 1990, pp. 787-790.
  57. L-W. Liou and A. Ray, "On Modeling of Integrated Communication and Control Systems," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 112, No. 4, December 1990, pp. 790-794.
  58. H.E. Garcia, A. Ray and R.M. Edwards, "Reconfigurable Control of Power Plants Using Learning Automata," IEEE Control System Magazine, Vol. 11, No. 1, January 1991, pp. 85-92.
  59. R. Luck and A. Ray, "Failure Detection and Isolation of Ultrasonic Ranging Sensors for Robotic Applications," IEEE Trans. on Systems, Man and Cybernetics, Vol. 21, No. 1, January-February 1991, pp. 221-227.
  60. A. Ray and R. Luck, "An Introduction to Sensor Signal Validation in Redundant Measurement Systems," IEEE Control System Magazine, Vol. 11, No. 2, February 1991, pp. 44-49.
  61. R.M. Edwards, K-W. Lee and A. Ray, "Multilayer Robust Control for Safety Enhancement of Reactor Operations," Trans. Am. Nuc. Soc., Vol. 63, June 1991, pp. 402-403.
  62. S. Nann, A. Ray and S. Kumara, "An Automated Decision Support System for Control of Real-Time Processes," International Journal of Intelligent Systems, Vol. 6, December 1991, pp. 739-758.
  63. L-W. Liou and A. Ray, "A Stochastic Regulator for Integrated Communication and Control Systems: Part I -- Formulation of Control Law," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 113, No. 4, December 1991, pp. 604-611.
  64. L-W. Liou and A. Ray, "A Stochastic Regulator for Integrated Communication and Control Systems: Part II -- Numerical Analysis and Simulation," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 113, No. 4, December 1991, pp. 612-619.
  65. R. Yu, J.J. Metzner and A. Ray, "Twin-Bus-Control (TBC) Protocol for Fiber-Optic-Based Networks," Computer Communications, Vol. 14, No. 10, December 1991, pp. 598-607.
  66. R. Luck, A. Ray and Y. Halevi, "Observability under Recuurent Loss of Outputs," AIAA Journal of Guidance, Control, and Dynamics, Vol. 15, No. 1, January-February 1992, pp. 284-287.
  67. A. Ayyagari and A. Ray, "A Fiber-Optic-Based Protocol for Manufacturing System Networks: Part I -- Conceptual Development and Architecture,"  ASME Journal of Dynamic Systems, Measurement and Control, Vol. 114, No. 1, March 1992, pp. 113-120.
  68. A. Ayyagari and A. Ray, "A Fiber-Optic-Based Protocol for Manufacturing System Networks: Part II -- Statistical Analysis," Vol. 114, No. 1, ASME Journal of Dynamic Systems, Measurement and Control, March 1992, pp. 121-131.
  69. R.M. Edwards, K.W. Lee and A. Ray, "Robust Optimal Control of Nuclear Reactors and Power Plants," Nuclear Technology, Vol. 98, May 1992, pp. 137-148.
  70. J.H. Shen, L-W. Liou, S. Levine, A. Ray and M. Detamore, "Expert System for Maintenance Management of A Boiling Water Reactor Power Plant," Trans. Am. Nuc. Soc., Vol. 65, June 1992, pp. 380-381.
  71. J.H. Shen and A. Ray, "Discrete-Time Loop Transfer Recovery with Multistep Delays," Optimal Control Applications & Methods, Vol. 13, No. 3, July-September 1992, pp. 255-263
  72. A. Ayyagari and A. Ray, "A Fiber Optic Network Protocol for Computer Integrated Manufacturing," ASME Journal of Engineering for Industry, Vol. 114, No. 3, August 1992, pp. 345-351.
  73. R.M. Edwards, K.Y. Lee and A. Ray, "The Penn State Intelligent Distributed Control Laboratory," IEEE Transactions on Energy Conversion, Vol. 7, No. 3, September 1992, pp. 478-482.
  74. J.H. Shen and A. Ray, "Extended Discrete-Time LTR Synthesis of Delayed Control Systems," Automatica, Vol. 29, No. 2, 1993, pp. 431-438.
  75. A. Ray, L-W. Liou and J.H. Shen, "State Estimation Using Randomly Delayed Measurements," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 115, No. 1, March 1993, pp. 19-26.
  76. A. Ayyagari and A. Ray, "Modelling and Analysis of a Data Communication Protocol for Integrated Control of Advanced Aircraft," Computer Communications, Vol. 16, No. 6, June 1993, pp. 350-365.
  77. S. Lee and A. Ray, "Performance Management of Multi-Access Communication Networks," IEEE Journal of Selected Areas in Communications,  Vol. 11, No. 9, December 1993, pp. 1426-1437.
  78. A. Ray and M-K.Wu, "Fatigue Damage Control of Mechanical Systems," SMART Materials and Structures, Vol. 3, No. 1, March 1994, pp. 47-58.
  79. A. Ray, X. Dai, M-K. Wu, M. Carpino and C.F. Lorenzo, "Damage-Mitigating Control of a Reusable Rocket Engine," AIAA Journal of Propulsion and Power, Vol. 10, No. 2, March-April 1994, pp. 225-234.
  80. R. Luck and A. Ray, "A Fixed Memory Filter for Real-Time Estimation of Noise-Corrupted Signals," AIAA Journal of Guidance, Control, and Dynamics, Vol. 17, No. 3, May/June 1994, pp. 231-234.
  81. C-K. Weng, R.M. Edwards and A. Ray, "Automation for Efficient and Safe Large Power Changes in Nuclear Power Plants,"  Trans. Am. Nuc. Soc., Vol. 70, June 1994, pp. 324-325.
  82. R. Luck and A. Ray, "Experimental Verification of a Delay Compensation Algorithm for Integrated Communication and Control Systems," International Journal of Control, Vol. 59, No. 6, June 1994, pp. 1357-1372.
  83. C-K. Weng, R.M. Edwards and A. Ray, "Robust Wide-Range Control of Nuclear Reactors Using the Feedforward-Feedback Concept," Nuclear Science and Engineering, Vol. 117, No. 3, July 1994, pp. 177-185.
  84. A. Ray, "Output Feedback Control under Randomly Varying Distributed Delays," AIAA Journal of Guidance, Control, and Dynamics, Vol. 17, No. 4, July/August 1994, pp. 701-711.
  85. A. Ray, M-K. Wu, M. Carpino and C.F. Lorenzo, "Damage-Mitigating Control of Mechanical systems: Part I -  Conceptual Development and Model Formulation," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 116, No. 3, September 1994, pp. 437-447.
  86. A. Ray, M-K. Wu, M. Carpino and C.F. Lorenzo, "Damage-Mitigating Control of Mechanical systems: Part II - Formulation of an Optimal Control Policy and Simulation," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 116, No. 3, September 1994, pp. 448-455.
  87. C-K. Weng, M. Power, R.M. Edwards and A. Ray, "Feedforward-Feedback Control by Nonlinear Programming and Structured Singular Value Approach,"  Trans. Am. Nuc. Soc., Vol. 71, November 1994, pp. 365-366.
  88. S. Lee and A. Ray, "Performance Management of Manufacturing System Networks," International Journal of Flexible Manufacturing, Vol. 7, No. 1, March 1995, pp. 47-71.
  89. M-K.Wu and A. Ray, "Damage-Mitigating Control of Mechanical Systems for Structural Durability and High Performance," ASME Journal of Engineering for Gas Turbines and Power, Vol. 117, No.2, April 1995, pp. 307-313.
  90. H.E. Garcia, A. Ray and R.M. Edwards, "Implementation of a Reconfigurable Fault-Tolerant Hybrid Supervisory System," IEEE Transactions on Control Systems Technology, Vol. 3, No. 2, June 1995, pp.157-170.
  91. C-J. Li and A. Ray, "Neural Network Representation of Fatigue Damage Dynamics," SMART Materials and Structures, Vol. 4, No. 2, June 1995, pp. 126-133.
  92. S. Tangirala, A. Ray and M. Carpino, "Damage Mitigating Control of Mechanical Systems: Experimental Verification of the Concept," SMART Materials and Structures, Vol. 4, No. 2, June 1995, pp. 139-146.
  93. E. Yaz and A. Ray, "Grammian Assignment for Stochastic Parameter Systems and Their Stabilization under Randomly Varying Delays," Optimal Control Applications and Methods, Vol. 16,.No. 4, September 1995, pp. 263-272.
  94. X. Dai and A. Ray, "Life Prediction of the Thrust Chamber Wall of a Reusable Rocket Engine," AIAA Journal of Propulsion and Power, Vol. 11, No. 6, November-December 1995, pp. 1279-1287.
  95. J.H. Shen, A. Ray and S.H. Levine, "A Decision Support System for Maintenance Management of a Boiling Water Reactor Power Plant," Nuclear Safety, Vol. 37, No. 1, January-March 1996, pp. 1-11.
  96. H.E. Garcia and A. Ray , "State-Space Supervisory Control of Reconfigurable Discrete Event Systems," International Journal of Control, Vol. 63, No. 4, April 1996, pp. 767-797.
  97. M. Holmes, A. Ray and D. Mudgett, "Modeling of the Planar Motion of a Proposed Laboratory Flexible Structure," AIAA Journal of  Guidance, Control and Dynamics, Vol. 19, No. 3, May/June 1996, pp. 710-713.
  98. C-K. Weng, A. Ray and X. Dai, "Modelling of Power Plant Dynamics and Uncertainties for Robust Control Synthesis," Applied Mathematical Modelling, Vol. 20, July 1996, pp. 501-512.
  99. A. Ray  and S. Tangirala, "Stochastic Modeling of Fatigue Crack Dynamics for On-line Damage Estimation and Life Prediction," IEEE Trans. on Control Systems Technology, Vol. 4, No. 4, July 1996, pp. 443-451.
  100. X. Dai and A. Ray, "Damage-Mitigating Control of a Reusable Rocket Engine: Part I - Life Prediction of the Main Thrust Chamber Wall," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 118, No. 3, September 1996, pp. 401-408.
  101. X. Dai and A. Ray, "Damage-Mitigating Control of a Reusable Rocket Engine: Part II - Formulation of an Optimal Policy and Simulation," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 118, No. 3, September 1996, pp. 409-415.
  102. C-K. Weng and A. Ray, "Robust Wide Range Control of Steam-Electric Power Plants," IEEE Trans. on Control Systems Technology, Vol. 5, No. 1, January 1997, pp. 74-88.
  103. A. Ray and S. Tangirala, "A Nonlinear Stochastic Model of Fatigue Crack Dynamics," Probabilistic Engineering Mechanics, Vol. 12, No. 1, January 1997, pp. 33-40.
  104. J.N. Rozak and A. Ray, "Robust Muultivariable Control of Rotorcraft in forward flight," Journal of the American Helicopter Society, Vol. 42, No. 2, April 1997,.pp. 149-160.
  105. M. Holmes, S. Tangirala and A. Ray, "Life Extending Control of Reusable Rocket Engines," AIAA Journal of  Guidance, Control and Dynamics, Vol. 20, No. 3, May-June 1997, pp. 621-623.
  106. P. Kallappa, M. Holmes and A. Ray, "Life Extending Control of Fossil Power Plants for Structural Durability and High Performance," Automatica, Vol. 33, No. 6, June 1997, pp. 1101-1118.
  107. N-C. Tsai and  A. Ray, "Stochastic Optimal Control under Randomly Varying Delays," International Journal of Control, Vol. 68, No. 5, November 1997, pp. 1179-1202.
  108. S. Tangirala, M. Holmes, A. Ray and M. Carpino, "Life-Extending Control of Mechanical Structures: Experimental Verification of the Concept," Automatica, Vol. 34, No. 1, January 1998, pp. 3-14.
  109. A. Ray, S. Tangirala and S. Phoha, "Stochastic Modelling of Fatigue Crack Propagation," Applied Mathematical Modelling, Vol. 22, April 1998, pp. 197-204.
  110. M. Holmes and A. Ray, "Fuzzy Damage Mitigating Control of Mechanical Structures," ASME Journal of Dynamic Systems, Measurement and Control, Vol. 120, No. 2, June 1998, pp. 249-256.
  111. E. Yaz and A. Ray, "Linear Unbiased State Estimation for Randomly Varying Sensor Delay," Applied Mathematics Letters, Vol. 11, No. 4, July 1998, pp. 27-32.
  112. J.N. Rozak and A. Ray, " Robust Muultivariable Control of Rotorcraft in forward flight: Impact of Bandwidth on Fatigue Life," Journal of the American Helicopter Society, Vol. 43, No. 3, July 1998, pp. 195-201.
  113. R. Patankar, A. Ray and A. Lakhtakia, "A State-Space Model of Fatigue Crack Growth," International Journal of Fracture, Vol. 90, No.3, September 1998, pp. 235-249.
  114. A. Ray and R. Patankar, “A Stochastic Model of Fatigue Crack Propagation under Variable-Amplitude Loading,” Engineering Fracture Mechanics, Vol. 62, Nos. 4-5, March 1999, pp. 477-493.
  115. N-C. Tsai and A. Ray, "Compesatability and Optimal Compensation under Randomly Varying Delays," International Journal of Control,  Vol. 72, No. 9, May 1999, pp. 826-832.
  116. A. Ray and S. Phoha, "Stochastic Modeling of Fatigue Crack Damage for Information-Based Maintenance," Annals of Operations Research, Vol. 91, September 1999, pp. 191-204.
  117. R. Patankar and A. Ray, "Damage Mitigating Controller Design for Structural Durability," IEEE Trans. on Control Systems Technology, Vol. 7, No. 5, September 1999, pp. 606-612.
  118. H. Zhang and A. Ray, "Robust Damage-Mitigating Control of Mechanical Structures: Experimental Validation on a Test Apparatus," ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 121, No. 3, September 1999, pp. 377-385.
  119. A. Ray, "Stochastic Modeling of Fatigue Crack Damage for Risk Analysis and Remaining Life Prediction," ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 121, No. 3, September 1999, pp. 386-393.
  120. H. Zhang, A. Ray and S. Phoha, “Hybrid Life Extending Control of Mechanical Systems: Experimental Validation of the Concept,” Automatica, Vol. 36, No. 1, January 2000, pp. 23-36.
  121. P. Kallappa and A. Ray, "Fuzzy Wide-Range Control of Fossil Power Plants for Life extension and Robust Performance," Automatica, Vol. 36, No. 1, January 2000, pp. 69-82.
  122. B-S. Hong, V. Yang and A. Ray, “Robust Feedback Control of Combustion Instability with Modeling Uncertainty,” Combustion and Flame, Vol. 120, No. 1, January 2000, pp. 91-106.
  123. R. Patankar and A. Ray, “State-Space Modeling of Fatigue Crack Growth in Ductile Alloys,” Engineering Fracture Mechanics, Vo. 66, No. 2, May 2000, pp.129-151.
  124. H. Zhang, A. Ray and R. Patankar, “Damage-Mitigating Control with Overload Injection: Experimental Validation of the Concept,” ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 122, no. 2, June 2000, pp. 336-342.
  125. C.F. Lorenzo, M. Holmes and A. Ray, "Nonlinear Life Extending Control of a Rocket Engine," AIAA Journal of Guidance, Control, and Dynamics, Vol. 23, No. 4, July/August 2000, pp. 759-762.
  126. A. Ray and J. Caplin, “Life Extending Control of Aircraft: Trade-off between Flight Performance and Structural Durability,” The Aeronautical Journal,, Vol. 104, No. 1039, September 2000, pp. 397-408.
  127. S.J. Pinchak and A. Ray, “Pilot Safety Enhancement for On-board Ground Collision Avoidance Systems,” Aircraft Engineering and Aerospace Technology, Vol. 72, No. 5, September/October 2000, pp. 422-429.
  128. A. Ray and S. Phoha, “Calibration and Estimation of Redundant Signals,” Automatica, Vol. 36, No. 9, October 2000, pp. 1525-1534.
  129. M. Holmes and A. Ray, "Fuzzy Damage Mitigating Control of a Fossil Power Plant," IEEE Trans. on Control Systems Technology, Vol. 9, No. 1, January 2001, pp. 140-147.
  130. B-S. Hong and A. Ray, “Observer-Embedded L2-Gain Control,” Applied Mathematics Letters, Vol 14, No. 5, May 2001, pp. 563-569.
  131. A. Ray, M. Holmes and C.F. Lorenzo, "Life Extending Controller Design for Reusable Rocket Engines," The Aeronautical Journal, Vol. 105, No. 1048, June 2001, pp. 315-322.
  132. J. Caplin, A. Ray and S.M. Joshi, “Robust Damage-Mitigating Control of Aircraft for High Performance and Structural Durability,” IEEE Trans. on Aerospace and Electronic Systems, Vol. 37, No. 3, July 2001, pp. 849-862.
  133. C.F. Lorenzo, M. Holmes and A. Ray, "Nonlinear Control of a Reusable Rocket Engine for Life Extension," AIAA Journal of Propulsion and Power, Vol. 17, No. 5, September-October 2001, pp. 998-1004.
  134. A. Ray and R. Patankar, “Fatigue Crack Growth under Variable-amplitude Loading: Part I – Model Formulation in State-Space Setting,” Applied Mathematical Modelling, Vol. 25, Issue 11, November 2001, pp. 979-994.
  135. A. Ray and R. Patankar, “Fatigue Crack Growth under Variable-amplitude Loading: Part II – Code Development and Model Validation,” Applied Mathematical Modelling Vol. 25, Issue 11, November 2001, pp. 995-1013.
  136. B.S. Hong, A. Ray and V. Yang, “Wide Range Robust Control of Combustion Instability,” Combustion and Flame, Vol. 128, No. 3, February 2002, pp. 242-258.
  137. A. Ray and S. Phoha, “Detection of Potential Faults via Multi-level Hypotheses Testing,” Signal Processing, Vol. 82, No. 6, June 2002, pp. 853-859.
  138. C. Delfino, A. Ray, K.N. Ivanov and F-B. Cheung, "A New Concept for Early Detection of BWR Instabilities,"  Trans. Am. Nuc. Soc. (TransAO),  Vol. 88, June 2003, pp. 292-294.
  139. A. Ray, A. Surana and S. Phoha, “A Language Measure for Supervisory Control,” Applied Mathematics Letters, Vol. 16,  September 2003, pp. 985-991. 
  140. B.S. Hong, A. Ray and V. Yang, “Output Feedback Linear Parameter Varying (LPV) L2-gain Control,” ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 125, No. 3, September 2003, pp. 485-489.
  141. E. Keller and A. Ray, “Real-time Nondestructive Evaluation of Mechanical Structures,” Structural Health Monitoring, Vol. 2, No. 3, September 2003, pp. 191-203.
  142. A. Ray and S. Phoha, “Calibration and Estimation of Redundant Signals for Real-time Monitoring and Control,”  Signal Processing, Vol. 83, No.12, December 2003, pp. 2593-2605.
  143. A. Ray and S. Phoha, “Signed Real Measure of Regular Languages for Discrete-Event Automata,”  International Journal of Control, Vol. 76, No. 18, December 2003, pp. 1800-1808.
  144. J. Fu, A. Ray and C. M. Lagoa, “Unconstrained Optimal Control of Regular Languages,” Automatica, Vol. 40, No. 4, April 2004, pp. 639-646. 
  145. A. Surana and A. Ray, “Measure of Regular Languages,” Demonstratio Mathematica , Vol. 37, No. 2,  June 2004, pp. 485-503.
  146. A. Ray, “Symbolic Dynamic Analysis of Complex Systems for Anomaly Detection,” Signal Processing, Vol. 84, No. 7, July 2004, pp. 1115-1130.
  147. A. Ray, J. Fu and C.M. Lagoa, "Optimal Supervisory Control of Finite State Automata," International Journal of Control, Vol. 77, No. 12, August 2004, pp. 1083-1100.
  148. X. Wang and A. Ray, "A Language Measure for Performance Evaluation of Discrete Event Supervisory Control Systems," Applied Mathematical Modelling, Vol. 28, No. 9, September 2004, pp. 817-833.
  149. V. Phoha, A. Nadgar, A. Ray, S. Phoha and V. Jain, “Supervisory Control of Software Systems,” IEEE Transactions on Computers, Vol. 53, No. 9, September 2004, pp. 1187-1199.
  150. A. Ray, “Stochastic Measure of Fatigue Crack Damage for Health Monitoring of Ductile Alloy Structures,” Structural Health Monitoring, Vol. 3, No. 3, September 2004, pp. 245-263.
  151. A. Petruzzi, S. Chin, K. Ivanov, A. Ray and F-B. Cheung, "Development of Methodology for Early Detection of BWR Instabilities,"  Trans. Am. Nuc. Soc.,  Vol. 91, November 2004, pp. 902-904.
  152. X. Wang, A. Ray, P. Lee and J. Fu, "Optimal Control of Robot Behavior Using Language Measure,"  International Journal of Vehicle Autonomous Systems,  Vol. 2, Nos. 3/4, 2004, pp. 147-167.
  153. A. Ray, J. Fu and C. Lagoa, “Optimal Control of Regular Languages with Event Disabling Cost,” Demonstratio Mathematica, Vol. 37, No. 4, 2004, pp. 991-1013.
  154. X. Wang and A. Ray,  “A Language Measure for Performance Quantification of Discrete Event Supervisory Control Systems,” Bull. Cal. Math. Soc., Vol. 97, No. 1, 2005, pp. 59-68.
  155. X. Wang, A. Ray and A. Khatkhate, "On-line Identification of Language Measure Parameters for Discrete Event Supervisory Control," Applied Mathematical Modelling, Vol. 29, No. 6, June 2005, pp. 597-613.
  156. J.F. Horn, D K Tolani, C M Lagoa, Q Wang and A Ray, “Probabilistic Robust Control of Rotorcraft,” Control Engineering Practice, Vol. 13, No. 8, August 2005, pp. 1037-1046.
  157. C. Lagoa, J.Fu and A. Ray, "Robust Optimal Control of Regular Languages," Automatica, Vol. 41, No. 8, August 2005, pp. 1339-1445.
  158. A. Ray, "Signed Real Measure of Regular languages for Discrete Event Supervisory Control,"   International Journal of Control, Vol. 78, No. 12,  August 2005, pp. 949-967.
  159. S. Chin, A. Ray and V. Rajagopalan, "Symbolic Time Series Analysis for Anomaly Detection: A Comparative Evaluation," Signal Processing, Vol. 85, No. 9, September 2005,  pp. 1859-1868.
  160. I. Chattopadhyay and A. Ray, "A Complex Measure for Linear Grammars," Demonstratio Mathematica, Vol. 38, No. 3, 2005, pp. 761-775.
  161. N. Scafetta, A. Ray and B.J. West, "Correlation Regimes in Fluctuations of Fatigue Crack Growth," Physica A, Vol. 59, No. 3, 2006, pp. 1-23.
  162. D.K. Tolani, M. Yasar, A. Ray and V. Yang,  “Anomaly Detection in Aircraft Gas Turbine Engines,” AIAA Journal of Aerospace Computing, Information, and Communication, Vol. 3, No. 2, 2006, pp. 44-51.
  163. D.K. Tolani, A. Ray and J.F. Horn, "Integrated Decision and Control of Human-Engineered Complex Systems," International Journal of General Systems, Vol. 35, No. 3, June 2006, pp. 275-294.
  164. V. Rajagopalan and A. Ray, "Wavelet Space Partitioning for Symbolic Time Series Analysis," Chinese Physics Letters, Vol. 23, No. , July 2006, pp. 1951-1954.
  165. S. Gupta, A. Ray and E. Keller, "Symbolic Time Series Analysis of Ultrasonic Signals for Fatigue Damage Monitoring in Polycrystalline Alloys,"  Measurement Science and Technology, Vo. 17, Issue 7, July 2006, pp. 1963-1973.
  166. A. Khatkhate, A. Ray, E. Keller, S. Gupta and S. Chin, "Symbolic Time Series Analysis for Anomaly Detection in Mechanical Systems," IEEE/ASME Trans. on Mechatronics, Vol. 11, No. 4, August 2006, pp. 439-447.
  167. S. Gupta, A. Ray and A. Mukhopadhyay, "Anomaly Detection in Thermal Pulse Combustors," Proceedings of the I Mech E, Part I: Journal of Systems & Control Engineering, Volume 220, Number 5, August 2006, pp. 339-351(13).
  168. I. Chattopadhyay and A. Ray, "A Language Measure for Partially Observed Discrete Event Systems,"  International Journal of Control, Vol. 79, No. 9, September 2006, pp. 1074-1086.
  169. I. Chattopadhyay and A. Ray, "Renormalized Measure of Regular Languages,"  International Journal of Control, Vol. 79, No. 9, September 2006, pp. 1107-1117.
  170. S. Gupta, A. Khatkhate, A. Ray and E. Keller, "Identification of Statistical Patterns in Complex Systems via Symbolic Time Series Analysis," ISA Transactions, Vol. 45, No. 4, October  2006, pp. 477-490.
  171. V. Rajagopalan and A. Ray, "Symbolic Time Series Analysis  via Wavelet-based Partitioning,"  Signal Processing,  Vol. 86, No. 11, November 2006, pp. 3309-3320.
  172. M. Yasar and A. Ray, "Hierarchical Control of Aircraft Propulsion Systems: Discrete Event Supervisor Approach," Control Engineering Practice, Vol. 15, No. 2, February 2007, pp. 149-162.
  173. S. Gupta, A. Ray and E. Keller, "Symbolic Time Series Analysis of Ultrasonic Data for Early Detection of Fatigue Damage," Mechanical Systems and Signal Processing, Vol. 21, No. 2, February 2007, pp. 866-884.
  174. A. Khatkhate, A. Ray and E. Keller, “Modelling and System Identification of an Experimental Apparatus for Anomaly Detection in Mechanical Systems,” Applied Mathematical Modelling, Vol. 31, No. 4, April 2007, pp. 734-748.
  175. S. Gupta and A. Ray, "Real-Time Fatigue Life Estimation in Mechanical Structures,"  Measurement Science and Technology, Vol. 18, May 2007, pp. 1947-1957.
  176. I. Chattopadhyay and A. Ray, "Generalized Language Measure Families of Probabilistic Finite State Systems,"  International Journal of Control, Vol. 80, N0. 5, May 2007, pp. 789-799.
  177. S. Gupta, A. Ray and E. Keller, "Fatigue Damage Monitoring by Ultrasonic Ultrasonic Measurements: A Symbolic Time Series Analysis Approach," Internattional Journal of Fatigue, Vol. 29, No. 6, June 2007, pp. 1100-1114.
  178. I. Chattopadhyay and A. Ray, "Language-Measure-Theoretic Optimal Control of Probabilistic Finite-State Systems,"  International Journal of Control, Vol. 80, N0. 8, August 2007, pp. 1271-1290.
  179. V. Rajagopalan, A. Ray, R. Samsi and J. Mayer, "Pattern Identification in Dynamical Systems via Symbolic Time Series Analysis," Pattern Recognition, Vol. 40, No. 11, November 2007, pp. 2897-2907.
  180. S. Gupta and A. Ray, "Pattern Identification Using Lattice Spin Systems: A Thermodynamic Formalism,"  Applied Physics Letters , Vol. 91,  No. 19, November 2007, pp. 194105-1 to 194105-3.
  181. R. Patankar, V. Rajagopalan  and A. Ray, "Failure Precursor Detection in Complex Electrical Systems Using Symbolic Dynamics,"  International Journal of Signal and Imaging Systems Engineering, Vol. 1, No. 1,  2008, pp. 68-77.
  182. V. Rajagopalan, S. Chakraborty and A. Ray, "Estimation of Slowly-Varying Parameters in Nonlinear Systems via Symbolic Dynamic Filtering," Signal Processing, Vol. 89, No. 2, February 2008, pp. 339-348.
  183. A. Subbu and A. Ray, "Space Partitioning via Hilbert Transform for Symbolic Time Series Analysis,"  Applied Physics Letters , Vol. 92,  No. 08, February 2008, pp. 084107-1 to 084107-3.
  184. A. Khatkhate, S. Gupta, A. Ray and R. Patankar, “Anomaly Detection in Flexible Mechanical Couplings via Symbolic Time Series Analysis,” Journal of Sound and Vibration, Vol. 311, Issues 3-5, April 2008, pp. 608-622.
  185. A. Ray, "Book Review: Mathematical Methods in Robust Control of Linear Stochastic Systems (New York: Springer Science + Business Media, 2006)," IEEE Transactions on Automatic Control, Vol. 53, No. 3, April 2008, pp. 862-864.
  186. I. Chattopadhyay and A. Ray, "Structural Transformations of Probabilistic Finite State Machines,"  International Journal of Control, Vol. 81, N0. 5, May 2008, pp. 820-835.
  187. S. Gupta, A. Ray, S. Sarkar and M. Yasar, "Fault Detection and Isolation in Aircraft Gas Turbine Engines: Part I - Underlying Concept,"  Proceedings of the I Mech E Part G: Journal of Aerospace Engineering, Vol. 222, No. 3,  May 2008, pp. 307-318.
  188. S. Sarkar, M. Yasar, S. Gupta, A. Ray and K. Mukherjee, "Fault Detection and Isolation in Aircraft Gas Turbine Engines: Part II - Validation on a Simulation Test Bed,"  Proceedings of the I Mech E Part G: Journal of Aerospace Engineering, Vol. 222, No. 3,  May 2008, pp. 319-330.
  189. I. Chattopadhyay and A. Ray, "Generalized Projections in Finite State Automata & Decidability of State Determinacy,"  International Journal of Control,  in press.
  190. G. Mallapragada, I. Chattopadhyay and A. Ray, "Autonomous Robot Navigation Using Optimal Control of Probabilistic Regular Languages,"  International Journal of Control, in press.
  191. A. Srivastav, A. Ray and S. Gupta, "An Information-theoretic Measure for Anomaly Detection in Complex Dynamical Systems,"  Mechanical Systems and Signal Processing  (2008), DOI 10.1007/s11760-008-0061-8, to appear
  192. C. Rao, A. Ray, S. Sarkar and M. Yasar, "Review and Comparative Evaluation of Symbolic Dynamic Filtering for Detection of Anomaly Patterns," Signal, Image, and Video Processing (2008),  DOI 10.1007/s11760-008-0061-8, to appear.
  193. M. Yasar, A. Ray and J. Horn, "A Comprehensive Control Strategy for Integrated Flight/Propulsion Systems,"  Proceedings of the I Mech E Part G: Journal of Aerospace Engineering, in press.
  194. G. Mallapragada, I. Chattopadhyay and A. Ray, "Automated Behavior Recognition in Mobile Robots Using Symbolic Dynamic Filtering," Proceedings of the I Mech E Part I: Journal of Systems & Control Engineering, in press.
  195. S. Gupta, D. Singh and A. Ray, "Statistical Pattern Analysis of Ultrasonic Signals for Fatigue Damage Detection in Mechanical Structures," NDT&E International, DOI:10.1016/j.ndteint.2008.06.001, to appear.
  196. R. Samsi, A. Ray and J. Mayer, "Early Detection of Stator Voltage Imbalance in Three-Phase Induction Motors,"  Electric Power Systems Research, in press.
  197. K. S. Bhambare, S. Gupta, M. M. Mench and A. Ray, "A Carbon Monoxide Sensor in Polymer Electrolyte Fuel Cells based on Symbolic Dynamic Filtering," Sensors & Actuators, Part B, in press.
  198. S. Chakraborty,  S. Sarkar,  S. Gupta and A. Ray, "Damage Monitoring of Refractory Wall in a Generic Entrained-Bed Slagging Gasification System,"  Proceedings of the I Mech E Part A: Journal of Power and Energy, in press.
  199. I. Chattopadhyay, G. Mallapragada and A. Ray, " ν*: A Robot Path Planning Algorithm based on Renormalized Measure of Probabilistic Regular Languages,"  International Journal of Control, in press.

Books

  1. N. Nayak and A. Ray, INTELLIGENT SEAM TRACKING FOR ROBOTIC WELDING, Springer Verlag, New York, 1993.  ISBN 0-387-19826-1.
  2. A. Ray, V. V. Phoha and S. Phoha, QUANTITATIVE MEASURE FOR DISCRETE EVENT SUPERVISORY CONTROL: Theory and Applications, Springer, New York, 2005.   ISBN 0-387-02108.
    3.
  1. A. Ray, "Power Plant Transients in a Feedpump System," SIMULATION PROCEEDINGS ON ENERGY, Volume 2,  ed. K.E.F. Watt, December 1978, Chapter 12.
  2. H.E. Watson and A. Ray, "Laser-Based Intelligent Robotic Systems for Manufacturing Automation," COMPUTER-AIDED DESIGN, ENGINEERING, and DRAFTING, Auerbach Publications, New York, eds. M. Sullivan and S. Chasin, Article #3.17S38, Summer 1987.
  3. A. Ray, "Computer Networking for Manufacturing Systems," PROGRESS IN ROBOTICS AND INTELLIGENT SYSTEMS, Volume 1, ABLEX Publishing Corporation, Norwood, NJ, eds. C.Y. Ho and G.W. Zobrist, Chapter 3, 1994, pp. 78-105. ISBN 0-89391-580-7.
  4. A. Ray and S. Phoha, "Research Problems in Computer Networking for Manufacturing Systems," PROGRESS IN ROBOTICS AND INTELLIGENT SYSTEMS, Volume 2, ABLEX Publishing Corporation, Norwood, NJ, eds. C.Y. Ho and G.W. Zobrist, 1996, pp. 196-213. ISBN 0-89391-593-9.
  5. P. Kallappa and A. Ray, “Life-Extending Load Regulation of Power Plants,” ENCYCLOPEDIA OF ELECTRICAL AND ELECTRONIC ENGINEERING, Wiley, ed. J.G. Webster, New York, Vol. 11, February 1999, pp. 494-511.  ISBN 0-471-13952-1.
  6. A. Ray and S. Phoha, "Integrated Prognostics, Maintenance, and Life Extending Control," COMPUTER-AIDED MAINTENANCE, METHODOLOGIES AND PRACTICE, Kluwer Academic Publishers, Dordrecht, The Netherlands, eds. J. Lee and B. Wang, 1999, pp. 136-169. ISBN 0-412-62970-4.
  7. S. Phoha and A. Ray, "Life Extension of Operating Machinery Using the National Information Infrastructure (NII)," COMPUTER-AIDED MAINTENANCE, METHODOLOGIES AND PRACTICE, Kluwer Academic Publishers, Dordrecht, The Netherlands, eds. J. Lee and B. Wang, 1999, pp. 231-260.  ISBN 0-412-62970-4.
  8. P. Kallappa, A. Ray and M.S. Holmes, “Fuzzy Life Extending Control of Mechanical Systems,” ANALYTICAL ISSUES IN FUZZY CONTROL: Synthesis and Analysis, Wiley, Chichester, U.K., eds. S. S. Farinwata, D. Filev and R. Langari, Chapter 18, 2000, pp. 349-383.  ISBN 0-471-98631-3.
  9. V. Yang, B-S. Hong and A. Ray, “Robust Feedback Control of Combustion Instabilities with Model Uncertainty,” ADVANCES IN CHEMICAL PROPULSION, CRC Press, Boca Raton, Florida, ed. G.D. Roy, 2001, pp. 361-380.  ISBN 0-8493-1171-3.</