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Conference Papers Year : 2013

On Practical Fixed Order H∞ Loop-Shaping


In this paper, a fixed order H ∞ synthesis is used to directly shape the open loop transfer function so that it matches as closely as possible, in the singular values sense, a desired frequency gain which captures both performance and robust stability objectives. First, a loop shaping weight is automatically computed, and then it is used in the controller synthesis by solving a well-suited four-block H ∞ control problem with a recently developed nonsmooth H ∞ synthesis routine. Two industrial applications are provided to illustrate the potential of the approach for low order robust controller design: a first one on the control of a piezo-actuated optronic mechanism, a second one dealing with inertial Line Of Sight stabilization loops.
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hal-00826279 , version 1 (27-05-2013)



Serge Hirwa, Philippe Feyel, Gilles Duc, Guillaume Sandou. On Practical Fixed Order H∞ Loop-Shaping. 2013 European Control Conference (ECC), Jul 2013, Zurich, Switzerland. ⟨10.23919/ecc.2013.6669324⟩. ⟨hal-00826279⟩
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