K Renganathan

Publications (2)2 Total impact

• Article: An observer based approach for achieving fault diagnosis and fault tolerant control of systems modeled as hybrid Petri nets.

  K Renganathan, VidhyaCharan Bhaskar
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  ABSTRACT: In this paper, we propose an approach for achieving detection and identification of faults, and provide fault tolerant control for systems that are modeled using timed hybrid Petri nets. For this purpose, an observer based technique is adopted which is useful in detection of faults, such as sensor faults, actuator faults, signal conditioning faults, etc. The concepts of estimation, reachability and diagnosability have been considered for analyzing faulty behaviors, and based on the detected faults, different schemes are proposed for achieving fault tolerant control using optimization techniques. These concepts are applied to a typical three tank system and numerical results are obtained.
  ISA transactions 07/2011; 50(3):443-53. · 1.00 Impact Factor
• Article: Observer based on-line fault diagnosis of continuous systems modeled as Petri nets.

  K Renganathan, Vidhyacharan Bhaskar
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  ABSTRACT: This paper describes a technique for achieving on-line fault diagnosis in continuous systems that are modeled using Petri nets. The effect of place markings and transition markings are considered and based on the computed error between the initial marking and subsequent markings evolved in time, the faults are categorized assuming that the markings are both observable and unobservable. An algorithm has been suitably proposed for achieving detection of faults for a typical continuous three tank system along with suitable results.
  ISA transactions 05/2010; 49(4):587-95. · 1.00 Impact Factor