Stochastic regulator for integrated communication and control systems. Part I. Formulation of control law

Luen Woei Llou, Asok Ray

Research output: Contribution to journalArticlepeer-review

117 Scopus citations


Integrated Communication and Control Systems (ICCS), recently introduced and analyzed in a series of papers, are applicable to complex dynamical processes like advanced aircraft, spacecraft, automotive, and manufacturing processes. Time-division-multiplexed computer networks are employed in ICCS for exchange of information between spatially distributed plant components as well as for coordination of the diverse control and decision-making functions. Unfortunately, an ICCS network introduces randomly varying, distributed delays within the feedback loops in addition to the digital sampling and data processing delays. These network-induced delays degrade the system dynamic performance, and are a source of potential instability. This two-part paper presents the synthesis and performance evaluation of a stochastic optimal control law for ICCS. In this paper, which is the first of two parts, a state feedback control law for ICCS has been formulated by using the dynamic programming and optimality principle on a finite-time horizon. The control law is derived on the basis of a stochastic model of the plant which is augmented in state space to take into account the effects of randomly varying delays in the feedback loop. The second part presents numerical analysis of the control law and its performance evaluation by simulation of the flight dynamic model of an advanced aircraft.

Original languageEnglish (US)
Pages (from-to)604-613
Number of pages10
JournalJournal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Issue number4
StatePublished - Dec 1991

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Instrumentation


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