Results 231 to 240 of about 856,905 (268)
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Bull. EATCS, 1999
Summary: We prove that periodically time-varying H systems with four components and with splicing rules of a small size (as the length of the splicing sites) generate all recursively enumerable languages. This improves a result and partially solves an open problem from \textit{G. Păun}, \textit{G. Rozenberg} and \textit{A. Salomaa} [DNA computing.
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Summary: We prove that periodically time-varying H systems with four components and with splicing rules of a small size (as the length of the splicing sites) generate all recursively enumerable languages. This improves a result and partially solves an open problem from \textit{G. Păun}, \textit{G. Rozenberg} and \textit{A. Salomaa} [DNA computing.
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2014
A large number of physical systems are nonstationary. Identification of nonstationary processes have been widely studied in the literature for linear systems. Traditional techniques for identifying linear time-varying (LTV) systems are mostly based on the recursive weighted least squares methods (see [106], [22], [83], [34], [124]).
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A large number of physical systems are nonstationary. Identification of nonstationary processes have been widely studied in the literature for linear systems. Traditional techniques for identifying linear time-varying (LTV) systems are mostly based on the recursive weighted least squares methods (see [106], [22], [83], [34], [124]).
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Output regulation of time-varying systems
Systems & Control Letters, 2006zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Akira Ichikawa, Hitoshi Katayama
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Representation of Time-Varying Nonlinear Systems With Time-Varying Principal Dynamic Modes
IEEE Transactions on Biomedical Engineering, 2007System identification of nonlinear time-varying (TV) systems has been a daunting task, as the number of parameters required for accurate identification is often larger than the number of data points available, and scales with the number of data points.
Yuru Zhong +3 more
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Persistent identification of time-varying systems
IEEE Transactions on Automatic Control, 1997Introducing the concept and intrinsic measures of persistent identification (PI) errors first for linear time-invariant systems (LTIS) as a limiting case, upper and lower bounds for these measures are obtained and explicitly computed for several typical classes of prior uncertainty sets.
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Random access systems with a time varying channel
IEEE INFOCOM '89, Proceedings of the Eighth Annual Joint Conference of the IEEE Computer and Communications Societies, 1989A random multiple-access system which uses a collision resolution algorithm for accessing a common time-varying channel is considered. The channel is assumed to be in one of two states. In each state the channel is characterized by a general discrete memoryless channel, and the transitions between the two states are assumed to be Markovian.
Kelvin K. Y. Ho +2 more
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Backstepping with bounded feedbacks for time-varying systems
Proceedings of the 44th IEEE Conference on Decision and Control, 2004A new extension of the backstepping technique which applies to time-varying nonlinear systems is proposed. Thereby this can be utilized in particular for solving problems of global tracking. A family of time-varying nonlinear systems is globally uniformly asymptotically stabilized by bounded feedbacks.
Frédéric Mazenc, Samuel Bowong
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Modeling computational networks by time-varying systems
Integration, 1993Many computational schemes in linear algebra can be studied from the point of view of (discrete) time-varying linear systems theory. For example, the operation ‘multiplication of a vector by an upper triangular matrix’ can be represented by a computational scheme (or model) that acts sequentially on the entries of the vector. The number of intermediate
Alle-Jan van der Veen +1 more
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Stability of time-varying switched systems with time-varying delay
Nonlinear Analysis: Hybrid Systems, 2009The author first gives a generalization of Halanay's inequality, and then uses this inequality to obtain sufficient conditions for the stability of the following switched delay system \[ x'(t)=A_{\sigma_i}(t)x(t)+B_{\sigma_i}(t)x(t-\tau(t))+\int_{t_0}^t f_{\sigma_i}(t-s)x(s)ds, \] where \[ x(t)\in \mathbb R^n, A_{\sigma_i}(t), B_{\sigma_i}(t)\in ...
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Time-varying Lyapunov functions for linear time-varying systems
International Journal of Control, 1986Abstract Adopting special time-varying Lyapunov-function candidates, it is shown that the Popov criterion ensures large-scale asymptotic stability for linear time-varying feedback systems with relaxed conditions on the time-varying gain fc(t). The main result is that li(t)/k(t) need not be bounded for all finite t and need be bounded only when ibecomes
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