A multi-degree-of-freedom linked energy harvester for low frequency vibration environments

Abstract

The application provides a multi-degree-of-freedom linkage energy harvester for a low-frequency vibration environment, which is used in a 10Hz-18Hz low-frequency vibration environment and comprises a support assembly, a first moving assembly, a second moving assembly, a first cantilever beam vibration assembly, a second cantilever beam vibration assembly, a first magnet and a second magnet. The first moving assembly and the second moving assembly are both connected to the support assembly, the first moving assembly and the second moving assembly are arranged perpendicularly to each other, and the first moving assembly is located on the upside of the second moving assembly. The first cantilever beam vibration assembly is connected to the first moving assembly, and the first moving assembly is used to drive the first cantilever beam vibration assembly to move in the vertical direction. The application solves the problem that the existing piezoelectric recovery mode cannot realize multi-degree-of-freedom linkage in a low-frequency vibration environment, thereby causing a very narrow frequency band, a low voltage, a low generated power and a low energy recovery efficiency and poor reliability.

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