26 citations · 92 across the 35 of their papers we have counts for
5 papers · 1 filter
Bounded Real Lemma and structured singular value versus diagonal scaling: the free noncommutative setting
Joseph A. Ball, Gilbert J. Groenewald, Sanne ter Horst
The structured singular value was introduced independently by Doyle and Safanov as a tool for analyzing robustness of system stability and performance in the presence of struct…
De Branges-Rovnyak realizations of operator-valued Schur functions on the complex right half-plane
Joseph A. Ball, Mikael Kurula, Olof J. Staffans +1
We give a controllable energy-preserving and an observable co-energy-preserving de Branges-Rovnyak functional model realization of an arbitrary given operator Schur function define…
Extension of the -metric: the case
Joseph A. Ball, Amol J. Sasane
An abtract -metric was introduced by Ball and Sasane, with a view towards extending the classical -metric of Vinnicombe from the case of rational transfer functions to more g…
Extension of the -metric
Joseph A. Ball, Amol J. Sasane
We extend the -metric introduced by Vinnicombe in robust control theory for rational plants to the case of infinite-dimensional systems/classes of nonrational transfer functions…
Equivalence of robust stabilization and robust performance via feedback
J. A. Ball, Q. Fang, G. J. Groenewald +1
One approach to robust control for linear plants with structured uncertainty as well as for linear parameter-varying (LPV) plants (where the controller has on-line access to the va…