CUED Publications database

On a concept of genericity for RLC networks

Hughes, TH and Morelli, A and Smith, MC (2019) On a concept of genericity for RLC networks. In: 23rd International Symposium on Mathematical Theory of Networks and Systems, 2018-7-16 to 2018-7-20.

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Abstract

© 2019 Elsevier B.V. A recent definition of genericity for resistor–inductor–capacitor (RLC) networks is that the realisability set of the network has dimension one more than the number of elements in the network. We prove that such networks are minimal in the sense that it is not possible to realise a set of dimension n with fewer than n−1 elements. We provide an easily testable necessary and sufficient condition for genericity in terms of the derivative of the mapping from element values to impedance parameters, which is illustrated by several examples. We show that the number of resistors in a generic RLC network cannot exceed k+1 where k is the order of the impedance. With an example, we show that an impedance function of lower order than the number of reactive elements in the network need not imply that the network is non-generic. We prove that a network with a non-generic subnetwork is itself non-generic. Finally we show that any positive-real impedance can be realised by a generic network. In particular we show that sub-networks that are used in the important Bott–Duffin synthesis method are in fact generic.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div F > Control
Depositing User: Cron Job
Date Deposited: 19 Apr 2019 20:05
Last Modified: 12 Dec 2019 01:53
DOI: 10.1016/j.sysconle.2019.104562