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
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.
. [J]. 中国物理快报, 2015, 32(01): 10501-010501.
LV Mei-Lei, SHEN Gang, WANG Hai-Lun, YANG Jian-Hua. Is the High-Frequency Signal Necessary for the Resonance in the Delayed System?. Chin. Phys. Lett., 2015, 32(01): 10501-010501.
2015, Vol. 32 
