Asok Ray

    • 6923 Citations
    • 36 h-Index
    1976 …2019
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    Research Output 1976 2019

    2007
    2 Citations (Scopus)

    Irreversibility-based measure of slowly evolving anomalies

    Srivastav, A., Ray, A. & Gupta, S., Dec 1 2007, Proceedings of the 2007 American Control Conference, ACC. p. 3228-3233 6 p. 4282880. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Trajectories
    Fatigue damage
    Crack initiation
    Aluminum alloys
    Crack propagation
    2 Citations (Scopus)

    Language-measure-theoretic optimal control of probabilistic finite-state systems

    Chattopadhyay, I. & Ray, A., Dec 1 2007, Proceedings of the 46th IEEE Conference on Decision and Control 2007, CDC. p. 5930-5935 6 p. 4434495. (Proceedings of the IEEE Conference on Decision and Control).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Vector Measures
    Supervisory Control
    Formal languages
    Discrete Event Systems
    Formal Languages
    28 Citations (Scopus)

    Language-measure-theoretic optimal control of probabilistic finite-state systems

    Chattopadhyay, I. & Ray, A., Aug 1 2007, In : International Journal of Control. 80, 8, p. 1271-1290 20 p.

    Research output: Contribution to journalArticle

    Formal languages
    Supervisory personnel
    Discrete event simulation
    Control theory
    6 Citations (Scopus)

    Modelling and system identification of an experimental apparatus for anomaly detection in mechanical systems

    Khatkhate, A. M., Ray, A. & Keller, E., Apr 1 2007, In : Applied Mathematical Modelling. 31, 4, p. 734-748 15 p.

    Research output: Contribution to journalArticle

    Anomaly Detection
    System Identification
    Mechanical Systems
    Identification (control systems)
    Durability
    29 Citations (Scopus)

    Online fatigue damage monitoring by ultrasonic measurements: A symbolic dynamics approach

    Gupta, S., Ray, A. & Keller, E., Jun 1 2007, In : International Journal of Fatigue. 29, 6, p. 1100-1114 15 p.

    Research output: Contribution to journalArticle

    Ultrasonic measurement
    Fatigue Damage
    Symbolic Dynamics
    Fatigue damage
    Monitoring
    30 Citations (Scopus)

    Pattern identification in dynamical systems via symbolic time series analysis

    Rajagopalan, V., Ray, A., Samsi, R. & Mayer, J., Nov 1 2007, In : Pattern Recognition. 40, 11, p. 2897-2907 11 p.

    Research output: Contribution to journalArticle

    Time series analysis
    Finite automata
    Time series
    Dynamical systems
    Automata theory
    15 Citations (Scopus)

    Pattern identification using lattice spin systems: A thermodynamic formalism

    Gupta, S. & Ray, A., Nov 19 2007, In : Applied Physics Letters. 91, 19, 194105.

    Research output: Contribution to journalArticle

    formalism
    thermodynamics
    dynamical systems
    anomalies
    deviation
    2 Citations (Scopus)

    Prognosis of failure precursor in complex electrical systems using symbolic dynamics

    Patankar, R., Rajagopalan, V., Tolani, D., Ray, A. & Begin, M., Dec 1 2007, Proceedings of the 2007 American Control Conference, ACC. p. 1846-1851 6 p. 4282219

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Pattern recognition
    Networks (circuits)
    Information theory
    Finite automata
    Principal component analysis
    53 Citations (Scopus)

    Real-time fatigue life estimation in mechanical structures

    Gupta, S. & Ray, A., Jul 1 2007, In : Measurement Science and Technology. 18, 7, p. 1947-1957 11 p., 022.

    Research output: Contribution to journalArticle

    fatigue life
    Fatigue Life
    Fault
    Fatigue of materials
    Real-time
    78 Citations (Scopus)

    Symbolic time series analysis of ultrasonic data for early detection of fatigue damage

    Gupta, S., Ray, A. & Keller, E., Feb 1 2007, In : Mechanical Systems and Signal Processing. 21, 2, p. 866-884 19 p.

    Research output: Contribution to journalArticle

    Time series analysis
    Fatigue damage
    Ultrasonics
    Automata theory
    Ultrasonic sensors
    2008
    13 Citations (Scopus)

    A carbon monoxide sensor in polymer electrolyte fuel cells based on symbolic dynamic filtering

    Bhambare, K. S., Gupta, S., Mench, M. M. & Ray, A., Sep 25 2008, In : Sensors and Actuators, B: Chemical. 134, 2, p. 803-815 13 p.

    Research output: Contribution to journalArticle

    Carbon Monoxide
    Carbon monoxide
    carbon monoxide
    Electrolytes
    fuel cells
    7 Citations (Scopus)
    Propulsion
    Control systems
    Aircraft propulsion
    Aircraft
    Engines
    11 Citations (Scopus)

    Anomaly detection in flexible mechanical couplings via symbolic time series analysis

    Khatkhate, A., Gupta, S., Ray, A. & Patankar, R., Apr 8 2008, In : Journal of Sound and Vibration. 311, 3-5, p. 608-622 15 p.

    Research output: Contribution to journalArticle

    Bearings (structural)
    time series analysis
    Time series analysis
    Automata theory
    Machine vibrations
    9 Citations (Scopus)

    Automated behaviour recognition in mobile robots using symbolic dynamic filtering

    Mallapragada, G., Chattopadhyay, I. & Ray, A., Oct 6 2008, In : Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering. 222, 6, p. 409-424 16 p.

    Research output: Contribution to journalArticle

    Mobile robots
    Robots
    Dynamical systems
    Robotics
    3 Citations (Scopus)

    Comparative evaluation of symbolic dynamic filtering for detection of anomaly patterns

    Rao, C., Sarkar, S., Ray, A. & Yasar, M., Sep 30 2008, 2008 American Control Conference, ACC. p. 3052-3057 6 p. 4586961. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Pattern recognition
    Computational efficiency
    Time series
    Dynamical systems
    Decision making
    11 Citations (Scopus)

    Damage monitoring of refractory wall in a generic entrained-bed slagging gasification system

    Chakraborty, S., Sarkar, S., Gupta, S. & Ray, A., Dec 1 2008, In : Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy. 222, 8, p. 791-807 17 p.

    Research output: Contribution to journalArticle

    Gasification
    Refractory materials
    Monitoring
    Degradation
    Dynamic response
    14 Citations (Scopus)

    Data-driven fault detection and estimation in thermal pulse combustors

    Chakraborty, S., Gupta, S., Ray, A. & Mukhopadhyay, A., Dec 15 2008, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 222, 8, p. 1097-1108 12 p.

    Research output: Contribution to journalArticle

    Combustors
    Fault detection
    Parameter estimation
    Information theory
    Pattern recognition

    Early detection of fatigue damage using escort distributions of ultrasonic data sequences

    Singh, D. S., Gupta, S., Chakraborthy, S. & Ray, A., Sep 30 2008, 2008 American Control Conference, ACC. p. 4286-4291 6 p. 4587167. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Fatigue damage
    Ultrasonics
    Statistical mechanics
    Large scale systems
    Crystalline materials
    1 Citation (Scopus)

    Estimation of multiple parameters in dynamical systems

    Rao, C., Mukherjee, K., Sarkar, S. & Ray, A., Sep 30 2008, 2008 American Control Conference, ACC. p. 1292-1297 6 p. 4586671. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Dynamical systems
    Parameter estimation
    18 Citations (Scopus)

    Estimation of slowly varying parameters in nonlinear systems via symbolic dynamic filtering

    Rajagopalan, V., Chakraborty, S. & Ray, A., Feb 1 2008, In : Signal Processing. 88, 2, p. 339-348 10 p.

    Research output: Contribution to journalArticle

    Finite automata
    Nonlinear systems
    Time series
    Nonlinear dynamical systems
    Parameter estimation
    5 Citations (Scopus)

    Failure precursor detection in complex electrical systems using symbolic dynamics

    Patankar, R. P., Rajagopalan, V. & Ray, A., Jan 1 2008, In : International Journal of Signal and Imaging Systems Engineering. 1, 1, p. 68-77 10 p.

    Research output: Contribution to journalArticle

    Principal component analysis
    Pattern recognition
    Signal processing
    Neural networks
    Degradation
    40 Citations (Scopus)

    Fault detection and isolation in aircraft gas turbine engines. Part 1: Underlying concept

    Gupta, S., Ray, A., Sarkar, S. & Yasar, M., Jun 30 2008, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 222, 3, p. 307-318 12 p.

    Research output: Contribution to journalArticle

    Fault detection
    Gas turbines
    Turbines
    Aircraft
    Aircraft engines
    25 Citations (Scopus)

    Fault detection and isolation in aircraft gas turbine engines. Part 2: Validation on a simulation test bed

    Sarkar, S., Yasar, M., Gupta, S., Ray, A. & Mukherjee, K., Jun 30 2008, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 222, 3, p. 319-330 12 p.

    Research output: Contribution to journalArticle

    Fault detection
    Gas turbines
    Turbines
    Aircraft
    Engines
    1 Citation (Scopus)

    Fault diagnosis and isolation in aircraft gas turbine engines

    Sarkar, S., Mukherjee, K., Ray, A. & Yasar, M., Sep 30 2008, 2008 American Control Conference, ACC. p. 2166-2171 6 p. 4586813

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Failure analysis
    Gas turbines
    Turbines
    Aircraft
    Turbofan engines
    2 Citations (Scopus)

    Generalised projections in finite state automata and decidability of state determinacy

    Chattopadhyay, I. & Ray, A., Oct 1 2008, In : International Journal of Control. 81, 10, p. 1626-1644 19 p.

    Research output: Contribution to journalArticle

    Computability and decidability
    Discrete event simulation
    Finite automata
    Observability
    Telecommunication links

    L*: An intelligent path planning algorithm based on renormalized measure of probabilistic regular languages

    Chattopadhyay, I., Mallapragada, G. & Ray, A., Sep 30 2008, 2008 American Control Conference, ACC. p. 1249-1254 6 p. 4586664. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Formal languages
    Motion planning
    Finite automata
    Navigation
    Robotics
    61 Citations (Scopus)

    Space partitioning via Hilbert transform for symbolic time series analysis

    Subbu, A. & Ray, A., Mar 6 2008, In : Applied Physics Letters. 92, 8, 084107.

    Research output: Contribution to journalArticle

    time series analysis
    dynamical systems
    15 Citations (Scopus)

    Statistical pattern analysis of ultrasonic signals for fatigue damage detection in mechanical structures

    Gupta, S., Singh, D. S. & Ray, A., Oct 1 2008, In : NDT and E International. 41, 7, p. 491-500 10 p.

    Research output: Contribution to journalArticle

    Damage detection
    Fatigue damage
    ultrasonics
    Ultrasonics
    damage
    27 Citations (Scopus)

    Structural transformations of probabilistic finite state machines

    Chattopadhyay, I. & Ray, A., May 1 2008, In : International Journal of Control. 81, 5, p. 820-835 16 p.

    Research output: Contribution to journalArticle

    Finite automata
    Pattern recognition
    Nonlinear dynamical systems
    Chemical analysis
    1 Citation (Scopus)

    Symbolic identification and anomaly detection in complex dynamical systems

    Chakraborty, S., Sarkar, S. & Ray, A., Sep 30 2008, 2008 American Control Conference, ACC. p. 2792-2797 6 p. 4586916. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Dynamical systems
    Automata theory
    Formal languages
    Disturbance rejection
    Information theory
    4 Citations (Scopus)

    Trend detection and data mining via wavelet and Hilbert-Huang transforms

    Yasar, M. & Ray, A., Sep 30 2008, 2008 American Control Conference, ACC. p. 4292-4297 6 p. 4587168. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Data mining
    Nonlinear filtering
    Data fusion
    Wavelet transforms
    Monitoring
    2009

    Adaptive control of sensor networks for detection of percolating faults

    Srivastav, A., Ray, A. & Phoha, S., Nov 23 2009, 2009 American Control Conference, ACC 2009. p. 5797-5802 6 p. 5160017. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Sensor networks
    Monitoring
    Computer viruses
    Adaptive systems
    Complex networks
    7 Citations (Scopus)
    Statistical mechanics
    Sensor nodes
    Sensor networks
    Scheduling
    Sensors
    9 Citations (Scopus)

    An information-theoretic measure for anomaly detection in complex dynamical systems

    Srivastav, A., Ray, A. & Gupta, S., Feb 1 2009, In : Mechanical Systems and Signal Processing. 23, 2, p. 358-371 14 p.

    Research output: Contribution to journalArticle

    Dynamical systems
    Information analysis
    Statistical mechanics
    Information theory
    Time series

    An integrated scheme for anomaly identification and automatic control of nuclear power plants

    Jin, X., Edwards, R. M. & Ray, A., Dec 1 2009, In : Transactions of the American Nuclear Society. 101, p. 315-316 2 p.

    Research output: Contribution to journalConference article

    Nuclear power plants

    A real time implementable all-pair dynamic planning algorithm for robot navigation based on the renormalized measure of probabilistic regular languages

    Lu, W., Chattopadhyay, I., Mallapragada, G. & Ray, A., Nov 23 2009, 2009 American Control Conference, ACC 2009. p. 5174-5179 6 p. 5160373. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Formal languages
    Navigation
    Robots
    Planning
    Motion planning
    5 Citations (Scopus)

    Asynchronous data-driven classification of weapon systems

    Jin, X., Mukherjee, K., Gupta, S., Ray, A., Phoha, S. & Damarla, T., Dec 22 2009, In : Measurement Science and Technology. 20, 12, 123001.

    Research output: Contribution to journalArticle

    weapon systems
    Pattern Classification
    Classification Algorithm
    Data-driven
    weapons
    4 Citations (Scopus)

    Autonomous robot navigation using optimal control of probabilistic regular languages

    Mallapragada, G., Chattopadhyay, I. & Ray, A., Jan 1 2009, In : International Journal of Control. 82, 1, p. 13-26 14 p.

    Research output: Contribution to journalArticle

    Formal languages
    Navigation
    Robots
    Robotics
    Finite automata

    Behavior Recognition in Mobile Robots Using Symbolic Dynamic Filtering and Language Measure

    Mallapragada, G. & Ray, A., Nov 23 2009, 2009 American Control Conference, ACC 2009. p. 1329-1334 6 p. 5160145. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Mobile robots
    Robots
    Formal languages
    Testbeds
    Dynamical systems
    2 Citations (Scopus)

    Data driven anomaly detection via symbolic identification of complex dynamical systems

    Chakraborty, S., Keller, E. & Ray, A., 2009, Proceedings 2009 IEEE International Conference on Systems, Man and Cybernetics, SMC 2009. p. 3745-3750 6 p. 5346890

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Synchronous motors
    Syntactics
    Permanent magnets
    Identification (control systems)
    Dynamical systems
    1 Citation (Scopus)

    Data-driven estimation of multiple fault parameters in permanent magnet synchronous motors

    Chakraborty, S., Rao, C., Keller, E., Ray, A. & Yasar, M., Nov 23 2009, 2009 American Control Conference, ACC 2009. p. 204-209 6 p. 5160253

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Synchronous motors
    Permanent magnets
    Time series
    Bearings (structural)
    Finite automata
    16 Citations (Scopus)

    Early detection of stator voltage imbalance in three-phase induction motors

    Samsi, R., Ray, A. & Mayer, J., Jan 1 2009, In : Electric Power Systems Research. 79, 1, p. 239-245 7 p.

    Research output: Contribution to journalArticle

    Electric motors
    Induction motors
    Stators
    Health
    Time series analysis

    Estimation of multiple faults in aircraft gas-turbine engines

    Sarkar, S., Rao, C. & Ray, A., Nov 23 2009, 2009 American Control Conference, ACC 2009. p. 216-221 6 p. 5159981. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Gas turbines
    Turbines
    Aircraft
    Aircraft engines
    Information fusion
    20 Citations (Scopus)

    Generalization of Hilbert transform for symbolic analysis of noisy signals

    Sarkar, S., Mukherjee, K. & Ray, A., Jun 1 2009, In : Signal Processing. 89, 6, p. 1245-1251 7 p.

    Research output: Contribution to journalArticle

    Time series
    Pattern recognition
    Dynamical systems
    Information theory
    Noise abatement

    Generalization of v* path planning for accommodation of amortized dynamic uncertainties in plan execution

    Chattopadhyay, I. & Ray, A., Nov 23 2009, 2009 American Control Conference, ACC 2009. p. 2415-2420 6 p. 5160367. (Proceedings of the American Control Conference).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Motion planning
    Robotics
    Planning
    Uncertainty
    16 Citations (Scopus)

    Generalized Ising model for dynamic adaptation in autonomous systems

    Gupta, S., Ray, A. & Phoha, S., Aug 25 2009, In : EPL. 87, 1, 10009.

    Research output: Contribution to journalArticle

    Ising model
    autonomy
    potential fields
    configurations
    statistical mechanics
    3 Citations (Scopus)
    Fatigue damage
    Ultrasonics
    Monitoring
    Fatigue of materials
    Ultrasonic sensors
    4 Citations (Scopus)

    Integrated robust and resilient control for nuclear power plants

    Jin, X., Edwards, R. M. & Ray, A., Dec 1 2009, 6th American Nuclear Society International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies 2009. p. 1359-1369 11 p. (6th American Nuclear Society International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies 2009; vol. 3).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Nuclear power plants
    Controllers
    Control systems
    Recovery
    Monitoring
    1 Citation (Scopus)

    Measurement of behavioral uncertainties in mechanical vibration systems: A symbolic dynamics approach

    Gupta, S., Singh, D., Srivastav, A. & Ray, A., Jan 1 2009, Mechanical Vibrations: Measurement, Effects and Control. Nova Science Publishers, Inc., p. 331-357 27 p.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Time series
    Statistical mechanics
    Information theory
    Finite automata
    Accelerometers

    Objective classification of two-phase flow regimes via ultrasonic signals

    Talley, J. D., Chakraborty, S., Keller, E., Ray, A. & Kim, S., 2009, In : Transactions of the American Nuclear Society. 100, p. 734-735 2 p.

    Research output: Contribution to journalArticle

    Two phase flow
    Ultrasonics