Results 41 to 50 of about 175,540,520 (123)
, 2012 International audienceThis article provides algebraic settings of the stability criteria of Nyquist and Popov and the circle criterion for closed-loop linear control systems with linear or nonlinear feedback whose transfer functions are rational ones ...
Wang, Dongming
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Health &Social Care in the Community, Volume 2026, Issue 1, 2026.This study aims to examine the mental risk‐taking skills of Turkish Grade 8 students in mathematics learning, with particular attention to gender differences and the demands of 21st‐century competencies. Drawing directly on qualitative data, the study develops a mental risk‐taking filter model to explain how students’ mathematical task selection is ...
Belgin Bal İncebacak +2 more
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Toward Scientific Clarity in the Evolutionary Puzzle of Austropotamobius Crayfish
Journal of Biogeography, Volume 52, Issue 11, November 2025.ABSTRACT Aim Illuminating the evolutionary history of Austropotamobius crayfish by uncovering patterns of biodiversity and biogeographical processes, thereby providing a foundation for accurate taxonomy and targeted conservation strategies. Location Europe. Time Period Miocene to present. Major Taxa Studied The crayfish genus Austropotamobius.
Lucian Pârvulescu +14 more
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Absolute-stability results in infinite dimensions
, 2004 We derive absolute-stability results of Popov and circle-criterion type for infinite-dimensional systems in an input-output setting. Our results apply to feedback systems in which the linear part is the series interconnection of an input-output stable ...
Staffans, O +5 more
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A root-locus interpretation of the Popov criterion
, 1966 A new method is developed for applying the Popov criterion to determine the stability of linear time-invariant systems with non-linear feedback by using root-locus. The method, in many cases, is easier to apply than the existing methods.
Srinath, M. D. +2 more
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, 1968 In his original work,Popov developped a simple frequency domain criterion by which global asymptotic stability of a nonlinear control system is guaranteed for all nonlinearities lying inside a certain sector called the Popov sector.
Dutertre, Jacques Andre
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On feedback stabilization of nonlinear discrete-time state-delayed systems [PDF]
, 2009 In this paper, we consider the problem of feedback stabilization of discrete-time systems with delays. The systems under consideration are nonlinear and nonaffine.
Woihida Aggoune +5 more
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Applications of frequency domain stability criteria in the design of nonlinear feedback systems [PDF]
, 1973 The Popov criterion for absolute stability of nonlinear feedback systems is applied to several example problems. Model transformations such as pole shifting and zero shifting extend the class of systems to which the criterion applies.
Rushing, Allen Joseph
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, 1969 summary:The paper gives a survey of some recent results on the stability and boundedness of the nonlinear feedback systems of the input-output type attained by the methods of abstract ...
Doležal, Václav
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, 2009 We derive absolute stability results of Popov-type for in finite-dimensional systems in an input-output setting. Our results apply to feedback systems where the linear part is the series interconnection of an L²-stable linear system and an integrator ...
R. F. Curtain, H. Logemann, O. Staffans
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