Effects of Insufficient Time-Scale Separation in Cascaded, Networked Systems

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Date
2015-07Author
Sakurama, Kazunori
Verriest, Erik I.
Egerstedt, Magnus B.
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In this paper, we investigate the effect of insufficient time-scale separation between inner and the outer loops in a cascaded, networked system under multiple clients. Inspired by the AQM (inner loop) and TCP (outer loop) at the Internet transport layer, a qualitative model is developed where the stability of the cascaded system is analyzed in terms of the gains acting at the outer and inner loops.