کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1891799 | 1043923 | 2012 | 10 صفحه PDF | دانلود رایگان |

In this paper, a spectrum optimization method is developed for chaotification in conjunction with an application in line spectrum reconfiguration. A key performance index (the objective function) based on Fourier spectrum is specially devised with the idea of suppressing spectrum spikes and broadening frequency band. Minimization of the index empowered by a genetic algorithm enables to locate favorable parameters of the time-delay feedback controller, by which a line spectrum of harmonic vibration can be transformed into a broad-band continuous spectrum of chaotic motion. Numerical simulations are carried out to verify the feasibility of the method and to demonstrate its effectiveness of chaotifying a 2-DOFs linear mechanical system.
► A time-delay feedback controller is designed for chaotification.
► A spectrum optimization method is proposed to determine chaotification parameters.
► Numerical examples verify the spectrum optimization- based chaotification method.
► Engineering application in line spectrum reconfiguration is demonstrated.
Journal: Chaos, Solitons & Fractals - Volume 45, Issue 6, June 2012, Pages 815–824