Oscillatority conditions for nonlinear systems with delay. (English) Zbl 1151.34054

The authors propose sufficient conditions of oscillatority in the sense of Yakubovich for nonlinear systems with time delay. By using a circadian oscillations model and a blood cells production model as illustrative examples, they showe that the amplitude bounds obtained from analytical calculations agree with those from computer simulations.


34K13 Periodic solutions to functional-differential equations
34K11 Oscillation theory of functional-differential equations
93C23 Control/observation systems governed by functional-differential equations
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