Josep M. Rossell

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An important challenge in the static output-feedback control context is to provide an isolated gain matrix possessing a zero-nonzero structure, mainly in problems presenting information structure constraints. Although some previous works have contributed some relevant results to this issue, a fully satisfactory solution has not yet been achieved up to now.(More)
—This note presents a strategy for choosing complementary matrices in the framework of the Inclusion Principle with state LQ optimal control of LTI systems. It is based on translating the basic restrictions given by the Inclusion Principle into explicit block structures for these matrices. The degree of freedom given by these structures is illustrated by(More)
= 70:56s 3 + 245:8s 2 + 285s + 110 2(92s + 100)(s + 1) 2 61:74s 3 + 226:1s 2 + 274s + 110 2(92s + 100)(s + 1) 2 : iii) Transfer function of the total compensator set 1803:2s 3 + 8688s 2 + 12 870s + 6050 = 0 s + 1 2s + 5 : V. CONCLUSION This note has presented a new idea of advanced cooperative order in a compensator set, and has shown its achievability in(More)
— The paper presents the expansion-contraction relations within the Inclusion Principle for a class of continuous-time state-delayed uncertain systems when considering H ∞ state memoryless control with additive controller uncertainty. All uncertainties are supposed to be time-varying norm bounded. The main contribution is the derivation of conditions under(More)
1943 guarantees that y(t) r(t) + 1 1 + 1 c12 jx 2 (0) 0 (0) 0 kx 1 (0)j (90) for all t 0. From this proposition, it is clear that the amount of overshoot caused by the unknown x 2 (0) can be made arbitrarily small by appropriately increasing 1 and 2. Influence of zero locations on the number of step-response extrema, " Automatica, vol.ative realization of a(More)
Overlapping guaranteed cost control design problem is solved for a class of linear continuous-time uncertain systems with state as well as control delays. Unknown arbitrarily time-varying uncertainties with known bounds are considered. A point delay is supposed. Conditions preserving closed-loop systems expansion-contraction relations including the(More)
—The brief presents a reliable 1-out-2 reduced order control design strategy for a cable-stayed bridge benchmark using two overlapping subsystems and the linear quadratic Gaussian (LQG) design. Reliability with regard to controller failures is considered. Local controllers are designed for reduced order subsystems of expanded system. They are implemented(More)