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This paper presents a two-degree-of-freedom controller structure for electric power steering systems. The controller is synthesized using a hybrid linear matrix inequality and genetic algorithms optimization. Robust stability is studied for both sector-bounded and passive uncertainties resulting in a system of linear matrix inequalities (LMIs) and a linear matrix equality (LME). This system of LMIs/LME...
For a class of discrete-time switched systems with disturbances the problems of robust stability and disturbance attenuation under arbitrary switching are studied for this class of systems. The sufficient conditions for the systems to be robustly stable with Hinfin disturbance attenuation gamma are presented by using the multiple Lyapunov function technique and common Lyapunov function technique ...
Disturbance observer (DOB)-based controller design is one of the most popular methods in the field of motion control. This paper presents a design method for the disturbance observers to satisfy closed loop performance specifications, provided that the main feedback controller is known. Unlike the conventional methods, the proposed DOB design method takes into account the influence from not only disturbance...
This paper investigates the problems of delay-dependent robust H-infinity stability and stabilization for uncertain time-delay systems with stochastic perturbations. Some new delay-dependent stability criteria are devised by taking the relationship between the terms in the Leibniz-Newton formula into account. Free weighting matrices are used to express this relationship and the new criteria are less...
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