Piezoelectric energy harvesting and active vibration reduction integrated set

Abstract

The invention relates to a piezoelectric energy harvesting and active vibration reduction integrated set comprising a plurality of inner sleeves (1), a plurality of outer sleeve (6) and an electrical control module. The inner sleeves (1) sleeve in order the outer wall of an inner cylinder (5); each inner sleeve (1) is composed of an inner sleeve base (2) and a plurality of piezoelectric beams (3) peripherally mounted on the inner sleeve base (2), and permanent magnets (4) are disposed on the piezoelectric beams (3). The outer sleeves (6) are mounted in order on the inner wall of an outer cylinder (7); each outer sleeve (6) is composed of an outer sleeve base (6) and electromagnets (9), and the electromagnets (9) are embedded in the outer sleeve base (8). The piezoelectric beams (3) and the electromagnets (9) are electrically connected with the electrical module separately. The problems that the existing piezoelectric energy harvester is low in harvesting efficiency, low in energy harvesting and vibration reduction functional integrity and large in size are solved; the piezoelectric energy harvesting and active vibration reduction integrated set is compact in structure, energy saving and reliable.

Description

[technical field] [0001] The invention relates to the technical field of piezoelectric energy harvesting and vibration control, in particular to an integrated device for piezoelectric energy harvesting and active vibration reduction. [Background technique] [0002] As the energy crisis intensifies, energy saving is one of the issues that must be considered in mechanical design. Vibration energy recovery is an effective method to reduce energy consumption and use cost. The vibration energy harvesting device can recover the ubiquitous vibration energy and suppress the vibration at the same time, which is both a controllable damper and an energy generator. [0003] At present, the vibration energy recovery technology is mainly divided into three types: (1) the electromagnetic type that uses an electromagnetic energy conversion device to convert vibration mechanical energy into electrical energy; (2) the electrostatic type that uses an electrostatic generator to convert vibrati...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned deficiencies and provide a piezoelectric energy harvesting and active vibration reduction integrated device, which overcomes the low energy harvesting efficiency of existing piezoelectric energy harvesting devices, low integration of energy harvesting and vibration reduction functions, The problem of large space occupation, and compact structure, energy saving and reliable

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