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Is the High-Frequency Signal Necessary for the Resonance in the Delayed System? |
| LV Mei-Lei1, SHEN Gang2, WANG Hai-Lun1, YANG Jian-Hua2** |
1College of Electrical and Information Engineering, Quzhou University, Quzhou 324000
2School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116
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| Cite this article: |
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LV Mei-Lei, SHEN Gang, WANG Hai-Lun et al 2015 Chin. Phys. Lett. 32 010501 |
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Abstract In a delayed system excited by low-frequency and high-frequency signals, the necessity of the high-frequency signal on the resonance is discussed. By adjusting the delay time, the resonance occurs in a wide scope of frequencies, including the primary, subharmonic and superharmonic frequencies. Only for very few cases does the high-frequency signal have a positive effect on the resonance. It is the traditional vibrational resonance phenomenon. In most situations, the high-frequency excitation is unnecessary for the resonance. An appropriate delay, rather than the high-frequency signal, is the key factor in improving the weak low-frequency signal.
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Published: 23 December 2014
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| PACS: |
05.45.-a
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(Nonlinear dynamics and chaos)
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02.30.Ks
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(Delay and functional equations)
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