Results 31 to 40 of about 38,991,183 (353)

On the controllability of distributed systems [PDF]

open access: yesProceedings of the National Academy of Sciences, 1997
To “control” a system is to make it behave (hopefully) according to our “wishes,” in a way compatible with safety and ethics, at the least possible cost. The systems considered here are distributed—i.e., governed (modeled) by partial differential equations (PDEs) of evolution.
openaire   +4 more sources

Controllability of nonlinear systems

open access: yesJournal of Differential Equations, 1972
Discussion of the controllability of nonlinear systems described by the equation dx/dt - F(x,u). Concepts formulated by Chow (1939) and Lobry (1970) are applied to establish criteria for F and its derivatives to obtain qualitative information on sets which can be obtained from x which denotes a variable of state in an arbitrary, real, analytical ...
Velimir Jurdjevic, Héctor J. Sussmann
openaire   +2 more sources

A Project-Based Learning Approach for Building an Affordable Control Teaching Lab: The Centrifugal Ring Positioner

open access: yesIEEE Access, 2022
This paper presents a novel experimental setup for teaching control engineering. This setup was developed during a project-based learning activity.
Xavier Jordens   +4 more
doaj   +1 more source

On the controllability of a nonlinear control system

open access: yesComputers & Mathematics with Applications, 1984
Nonlinear, time-invariant, finite-dimensional control systems are considered. Sufficient conditions for local controllability and global complete controllability are formulated. In the special case of a linear, finite-dimensional, time-invariant control systems these conditions are also necessary.
openaire   +3 more sources

Controllability in nonlinear systems

open access: yesJournal of Differential Equations, 1973
AbstractIn this paper we obtain an explicit expression for the reachable set for a class of nonlinear systems. This class is described by a chain condition on the Lie algebra of vector fields associated with each nonlinear system. These ideas are used to obtain a generalization of a controllability result for linear systems in the case where ...
openaire   +2 more sources

Spiking Control Systems

open access: yesProceedings of the IEEE, 2022
Spikes and rhythms organize control and communication in the animal world, in contrast to the bits and clocks of digital technology. As continuous-time signals that can be counted, spikes have a mixed nature. This paper reviews ongoing efforts to develop a control theory of spiking systems. The central thesis is that the mixed nature of spiking results
openaire   +3 more sources

A Hybrid Algorithm Based Static Model Updating Method and Its Application to Spacecraft

open access: yesAdvances in Materials Science and Engineering, 2022
In some cases, the static model updating requires more precise results to satisfy the requirement of simulating the structural response. The corresponding optimization algorithm not only should have a stronger capability to find the global optimum, but ...
Jutao Wang, Zhenzhong Liu, Xiaofei Wang
doaj   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

open access: yesPopulation Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Convolutional Neural Networks Based on Resonance Demodulation of Vibration Signal for Rolling Bearing Fault Diagnosis in Permanent Magnet Synchronous Motors

open access: yesEnergies
Permanent magnet synchronous motors (PMSMs) are widely used due to their unique advantages. Their transmission system mainly relies on rolling bearings; therefore, monitoring the motor’s working status and fault diagnosis for the rolling bearings are the
Li Ding, Haotian Guo, Liqiang Bian
doaj   +1 more source

Remarks on the Relay Controllability of Control Systems

open access: yesJournal of Mathematical Analysis and Applications, 1994
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
W. Kryszewski, ZEZZA, PIERLUIGI
openaire   +4 more sources

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