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Robustness Margins Separating Process Dynamics Uncertainties

Författare:
Publiceringsår: 2009
Språk: Engelska
Dokumenttyp: Konferensbidrag
Ytterligare information: Project=PID

Sammanfattning

In controller design, not only set-point tracking and disturbance rejection can be considered, also robustness towards process uncertainties is a key issue. In this paper, new robustness measures that divide uncertainties into dead time and non-dead time uncertainties, are presented. It is shown, to
the contrary of classic measures such as phase/gain/dead time margins, to guarantee stability towards simultaneous process changes, but at the same time being more flexible and less conservative than the robust control framework. The measures depend on extended sensitivity functions and are well illustrated in a Nyquist diagram giving valuable insight. Procedures to
calculate the robustness margins are presented and examples are given.

Disputation

Nyckelord

  • Technology and Engineering
  • Robustness
  • Time Delay
  • Uncertain systems
  • Stability

Övriga

2009 European Control Conference
2009-08-23
Budapest, Hungary
Published
Yes
  • LCCC

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