Results 11 to 20 of about 1,794,969 (184)

Discrete–Time Output Observers for Boundary Control Systems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2021
The paper studies the output observer design problem for a linear infinite-dimensional control plant modelled as an abstract boundary input/output control system.
Emirsajłow Zbigniew
doaj   +1 more source

Constructions of Strict Lyapunov Functions for Discrete Time and Hybrid Time-Varying Systems [PDF]

open access: yes, 2006
We provide explicit closed form expressions for strict Lyapunov functions for time-varying discrete time systems. Our Lyapunov functions are expressed in terms of known nonstrict Lyapunov functions for the dynamics and finite sums of persistency of ...
Albertini   +24 more
core   +6 more sources

Canonical quantization of constrained theories on discrete space-time lattices [PDF]

open access: yes, 2002
We discuss the canonical quantization of systems formulated on discrete space-times. We start by analyzing the quantization of simple mechanical systems with discrete time.
Di Bartolo, Cayetano   +2 more
core   +3 more sources

Optimal Finite-time Control of Positive Linear Discrete-time Systems [PDF]

open access: yesJournal of Electrical and Computer Engineering Innovations, 2016
This paper considers solving optimization problem for linear discrete time systems such that closed-loop discrete-time system is positive (i.e., all of its state variables have non-negative values) and also finite-time stable.
Gholam Reza Rezaei   +2 more
doaj   +1 more source

Reduction of discrete-time two-channel delayed systems [PDF]

open access: yes, 2018
In this letter, the reduction method is extended to time-delay systems affected by two mismatched input delays. To this end, the intrinsic feedback structure of the retarded dynamics is exploited to deduce a reduced dynamics which is free of delays ...
Mattioni, Mattia   +2 more
core   +3 more sources

Discrete mechanics, “time machines” and hybrid systems

open access: yesEPJ Web of Conferences, 2013
Modifying the discrete mechanics proposed by T.D. Lee, we construct a class of discrete classical Hamiltonian systems, in which time is one of the dynamical variables.
Elze Hans-Thomas
doaj   +1 more source

Discrete-time port-Hamiltonian systems: A definition based on symplectic integration [PDF]

open access: yes, 2018
We introduce a new definition of discrete-time port-Hamiltonian systems (PHS), which results from structure-preserving discretization of explicit PHS in time.
Kotyczka, Paul, Lefèvre, Laurent
core   +4 more sources

Consensus of Discrete Time Second-Order Multiagent Systems with Time Delay

open access: yesDiscrete Dynamics in Nature and Society, 2012
The consensus problem for discrete time second-order multiagent systems with time delay is studied. Some effective methods are presented to deal with consensus problems in discrete time multiagent systems.
Wei Zhu
doaj   +1 more source

Energy Levels of "Hydrogen Atom" in Discrete Time Dynamics [PDF]

open access: yes, 2006
We analyze dynamical consequences of a conjecture that there exists a fundamental (indivisible) quant of time. In particular we study the problem of discrete energy levels of hydrogen atom.
Accardi L.   +18 more
core   +3 more sources

Modal Control of Linear Time-Invariant Discrete-Time Systems

open access: yesMeasurement + Control, 1969
Modal control theory is applied to the design of feedback loops for linear time-invariant discrete-time systems. Modal theory is also used to demonstrate the explicit relationship which exists between the controllability of a mode of a discrete-time ...
B. Porter MA, PhD, CEng, MIMechE   +1 more
doaj   +1 more source

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