Title:
VIBRATION POWER GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/016620
Kind Code:
A1
Abstract:
In the present invention a negative impedance conversion circuit (26) imparts vibration to a nonlinear vibration element (50). When the amplitude of the vibration of the nonlinear vibration element (50) is equal to or greater than a preset threshold value, a switch switching unit (24) places the negative impedance conversion circuit (26) in a first state, in which the negative impedance conversion circuit is not connected to the nonlinear vibration element (50), and when the amplitude of the vibration of the nonlinear vibration element (50) is less than the threshold value, the switch switching unit places the negative impedance conversion circuit in a second state, in which the negative impedance circuit is connected to the nonlinear vibration element (50) and the nonlinear vibration element (50) vibrates. An amplitude/frequency detection unit (41) detects the vibration frequency of the nonlinear vibration element (50). A threshold value setting unit (4212) sets the threshold value in accordance with whether the vibration frequency is included in the frequency band at which the vibration unit vibrates, said frequency band including a multi-operation-point coexistence band of the nonlinear vibration element (50).
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Inventors:
MASUDA ARATA (JP)
Application Number:
PCT/JP2017/026446
Publication Date:
January 25, 2018
Filing Date:
July 21, 2017
Export Citation:
Assignee:
NAT UNIV CORP KYOTO INST TECHNOLOGY (JP)
International Classes:
H02P9/00; H02K35/02
Foreign References:
| JP2016025762A | 2016-02-08 | |||
| JP2008259409A | 2008-10-23 | |||
| EP3029803A1 | 2016-06-08 | |||
| CN103607092A | 2014-02-26 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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