Integrated Communication and Control Systems: Part II—Design Considerations

TLDR

Asynchronous time‑division multiplexed networks used in Integrated Communication and Control Systems introduce time‑varying and possibly stochastic delays in feedback control loops. The study aims to develop a comprehensive methodology for analyzing and designing delayed control systems and to clarify the model’s impact on dynamic performance while outlining alternative analytical approaches. The authors present a discrete‑time, finite‑dimensional, time‑varying model of delayed control systems, establish necessary and sufficient stability conditions for periodically varying delays, and propose alternative analytical methods for ICCS design. Simulation results illustrate the relevance of the proposed concepts.

Abstract

Asynchronous time-division multiplexed networks, used in Integrated Communication and Control Systems (ICCS), introduce time-varying and possibly stochastic delays in the feedback control loops. The objective of this on-going research is to develop a comprehensive methodology for the analysis and design of the above class of delayed control systems. In the first part [1] of this two-part paper, we developed a discrete-time, finite-dimensional, time-varying model of the delayed control system; necessary and sufficient conditions for system stability have been established for periodically varying delays. This second part elucidates the significance of the above model relative to the system dynamic performance as well as addresses major criteria for and outlines alternative analytical approaches to ICCS design. Pertinent concepts are illustrated by simulation.