Results 251 to 260 of about 29,851,130 (293)
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OSCILLATIONS IN AN EXCITABLE SYSTEM WITH TIME-DELAYS
International Journal of Bifurcation and Chaos, 2003Transition from excitability to asymptotic periodicity in an excitable system, modeled by the FitzHugh–Nagumo equations, with multiple time-delays, is analyzed. It is demonstrated that, for intermediate time-lags, the system has two coexisting attractors, a hyperbolic stable fixed point and a stable limit cycle.
Nikola Buric, Nebojsa Vasovic
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Instrumental Variable System Identification for Time-Delayed system with Non-Integer Time-Delay
2020 17th International Multi-Conference on Systems, Signals & Devices (SSD), 2020In this paper a bias eliminated system identification method for an output error model is proposed. The system under consideration is a time delayed system. The identification is done via a discrete time (DT) model with non-integer time delay. In a Discrete time, system, the time delay is a non-integer multiple of the sampling period.
Md. Muzakkir Quamar +1 more
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1999
A time-delay under the context of process control systems may be defined as the time interval from the application of a control signal to any observable change in the process variable. Time delays have always been among the most difficult problems encountered in process control. It could occur for various reasons and in different magnitudes.
Qing-Guo Wang +2 more
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A time-delay under the context of process control systems may be defined as the time interval from the application of a control signal to any observable change in the process variable. Time delays have always been among the most difficult problems encountered in process control. It could occur for various reasons and in different magnitudes.
Qing-Guo Wang +2 more
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Analyzing time–delay feedback systems
Proceedings of the 5th Experimental Chaos Conference, 2001We present a method to analyse time delay feedback system. The advantage of this method, compared to other tools in time series analysis, is that it does not depend on the dimension of the chaotic attractor of the system. It solely depends on the dimensionality of the equations of motion.
Hegger R +6 more
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Canonical forms of time-delay systems
2012 IEEE 51st IEEE Conference on Decision and Control (CDC), 2012The paper focuses on a long standing problem which consists in identifying those time-delay systems which can be transformed into a delay-free system by a suitable change of state coordinates. Both linear and nonlinear systems are considered. It is shown that the so-called cyclic vectors introduced by Olbrot and co-workers are rehabilitated through the
CALIFANO, Claudia, C. H. Moog
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Robust stability of time-delay systems
IEEE Transactions on Automatic Control, 1994Summary: There are two fundamental results available when we study stability of a polynomial family that is described by convex polytope in the coefficient space: The edge theorem and the theory based on the concept of convex directions. Many known results can be explained with these two results.
Vladimir L. Kharitonov, Alexey P. Zhabko
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Time-delay systems and their applications
International Journal of Systems Science, 2022Xian-Ming Zhang, Qing-Long Han
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Safety Functionals for Time Delay Systems
2019 American Control Conference (ACC), 2019This paper considers the stability and safety of nonlinear time delay systems. Utilizing a Lyapunov-Krasovskii functional we state and prove Lyapunov's theorem in its modern form and prove it with the help of the comparison lemma. Based on this we establish the notion of safety functional that allows us to ensure invariance of sets in the infinite ...
Gábor Orosz, Aaron D. Ames
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On stability of time delay Hamiltonian systems
2009 American Control Conference, 2009Stability of a class of nonlinear systems, called port-Hamiltonian systems, in the presence of time delay in the communication between the plant and controller is studied. The delay parameter is an unknown function which varies with time and for which the upper bounds on the magnitude and variation are known.
Ramkrishna Pasumarthy, Chung-Yao Kao
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Delayed controllers for time-delay systems
Communications in Nonlinear Science and Numerical Simulation, 2023zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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