Delay-distribution based stability analysis of time-delayed port-Hamiltonian systems

Author(s):  
Pankaj Mukhija ◽  
I. N. Kar ◽  
R. K. P. Bhatt
1986 ◽  
Vol 39 (3) ◽  
pp. 331 ◽  
Author(s):  
B Eckhardt ◽  
JA Louw ◽  
W-H Steeb

We review two criteria which have been used to predict the onset of large scale stochasticity in Hamiltonian systems. We show that one of them, due to Toda and based on a local stability analysis of the equations of motion, is inconclusive. An approach based on the local Riemannian curvature K of trajectories correctly predicts chaos if K < 0 everywhere, but�no further conclusions can be drawn. New (counter-)examples are provided.


2007 ◽  
Vol 27 (6) ◽  
pp. 1947-1963 ◽  
Author(s):  
GARETH E. ROBERTS

AbstractWe show that the well-known figure-eight orbit of the three-body problem is linearly stable. Building on the strong amount of symmetry present, the monodromy matrix for the figure-eight is factored so that its stability can be determined from the first twelfth of the orbit. Using a clever change of coordinates, the problem is then reduced to a 2×2 matrix whose entries depend on solutions of the associated linear differential system. These entries are estimated rigorously using only a few steps of a Runge–Kutta–Fehlberg algorithm. From this, we conclude that the characteristic multipliers are distinct and lie on the unit circle. The methods and results presented are applicable to a wide range of Hamiltonian systems containing symmetric periodic solutions.


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