Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7151821 | Systems & Control Letters | 2014 | 9 Pages |
Abstract
A recently proposed time-varying generalisation of Vinnicombe's ν-gap is shown to have the properties of a metric on a class of causal linear continuous-time systems that admit normalised strong graph representations. An alternative time-varying gap metric is then defined in more general terms and a corresponding robust stability result is derived for linear feedback interconnections. Finally, it is shown that the time-varying gap and ν-gap metrics induce the same topology, this being the coarsest topology under which feedback stability and closed-loop sensitivity are both robust properties.
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Authors
Sei Zhen Khong, Michael Cantoni,