Research output: Contribution to journal › Article › peer-review
Exploring nonlinearity by feedback. / Fradkov, Alexander.
In: Physica D: Nonlinear Phenomena, Vol. 128, No. 2-4, 15.04.1999, p. 159-168.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Exploring nonlinearity by feedback
AU - Fradkov, Alexander
N1 - Funding Information: The author acknowledges support of the Russian Foundation for Basic Research (Grant 96-01-01151) and of the Dutch Organization for Pure Research (NWO).
PY - 1999/4/15
Y1 - 1999/4/15
N2 - The possibilities of studying nonlinear behavior of physical systems by small feedback action are discussed. Analytical bounds of possible system energy change by feedback are established. It is shown that for a 1-DOF nonlinear oscillator, the change of energy by feedback can reach the limit achievable for a linear oscillator by a harmonic (non-feedback) action. The results are applied to different physical problems: evaluating the amplitude of action leading to escape from a potential well; stabilizing unstable modes of a nonlinear oscillator (pendulum); using feedback testing signals in spectroscopy. These and related studies are united by similarity of their goals (examination possibilities and limitations for changing a system behavior by feedback) and by unified methodology borrowed from cybernetics (control science). They, therefore, constitute a part of physics which can be called cybemeticalphysics.
AB - The possibilities of studying nonlinear behavior of physical systems by small feedback action are discussed. Analytical bounds of possible system energy change by feedback are established. It is shown that for a 1-DOF nonlinear oscillator, the change of energy by feedback can reach the limit achievable for a linear oscillator by a harmonic (non-feedback) action. The results are applied to different physical problems: evaluating the amplitude of action leading to escape from a potential well; stabilizing unstable modes of a nonlinear oscillator (pendulum); using feedback testing signals in spectroscopy. These and related studies are united by similarity of their goals (examination possibilities and limitations for changing a system behavior by feedback) and by unified methodology borrowed from cybernetics (control science). They, therefore, constitute a part of physics which can be called cybemeticalphysics.
KW - Control of oscillations and chaos
KW - Hamiltonian systems
KW - Nonlinear resonance
UR - http://www.scopus.com/inward/record.url?scp=0346335853&partnerID=8YFLogxK
U2 - 10.1016/S0167-2789(98)00322-4
DO - 10.1016/S0167-2789(98)00322-4
M3 - Article
AN - SCOPUS:0346335853
VL - 128
SP - 159
EP - 168
JO - Physica D: Nonlinear Phenomena
JF - Physica D: Nonlinear Phenomena
SN - 0167-2789
IS - 2-4
ER -
ID: 88362144