Abstract
This chapter will present periodic flows in nonlinear time-delay dynamical systems through the discrete implicit mappings. The period-1 flows in nonlinear time-delay dynamical systems will be discussed first by the one-step discrete maps, and then the period-m flows in nonlinear time-delay dynamical systems will also be discussed through the one-step discrete maps. Multistep, implicit discrete maps will be used to discuss the period-1 and period-m motions in nonlinear time-delay dynamical systems. Two methods are presented herein. The first method is based on the time-delay discrete nodes interpolated by the neighbored two nontime-delayed nodes. The second method is based on the time-delayed nodes determined integration between two nontime-delayed nodes. This method is also called continuation method. Through the discrete nodes in periodic flows , the periodic flows will be approximated by the discrete Fourier series and the frequency responses of the periodic flows can be determined through amplitude spectrums.
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References
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Luo, A.C.J. (2017). Periodic Flows in Time-delay Systems. In: Memorized Discrete Systems and Time-delay. Nonlinear Systems and Complexity, vol 17. Springer, Cham. https://doi.org/10.1007/978-3-319-42778-2_4
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DOI: https://doi.org/10.1007/978-3-319-42778-2_4
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Online ISBN: 978-3-319-42778-2
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