Stability of networked control systems with asynchronous renewal links: An impulsive systems approach

  • Authors:
  • Duarte Antunes;JoãO Hespanha;Carlos Silvestre

  • Affiliations:
  • Department of Electrical Eng. and Computer Science, Instituto Superior Técnico, ISR, 1046-001 Lisboa, Portugal and Department of Mechanical Engineering, Eindhoven University of Technology, Th ...;Department of Electrical and Computer Eng., University of California, Santa Barbara, CA 93106-9560, USA;Department of Electrical Eng. and Computer Science, Instituto Superior Técnico, ISR, 1046-001 Lisboa, Portugal and Department of Electrical and Computer Eng., Faculty of Science and Technolog ...

  • Venue:
  • Automatica (Journal of IFAC)
  • Year:
  • 2013

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Abstract

We consider networked control systems in which sensors, actuators, and controller transmit through asynchronous communication links, each introducing independent and identically distributed intervals between transmissions. We model these scenarios through impulsive systems with several reset maps triggered by independent renewal processes, i.e., the intervals between jumps associated with a given reset map are identically distributed and independent of the other jump intervals. For linear dynamic and reset maps, we establish that mean exponential stability is equivalent to the spectral radius of an integral operator being less than one. We also prove that the origin of a non-linear impulsive system is (locally) stable with probability one if its local linearization about the zero equilibrium is mean exponentially stable, which justifies the importance of studying the linear case. The applicability of the results is illustrated through an example using a linearized model of a batch-reactor.