公开(公告)号：US20180198383A1

公开(公告)日：2018-07-12

申请号：US15913590

申请日：2018-03-06

Applicant: STMicroelectronics S.r.I.

Inventor： Francesco Procopio ,  Carlo Valzasina ,  Alberto Corigliano ,  Raffaele Ardito ,  Giacomo Gafforelli

IPC: H02N2/18

CPC classification number: H02N2/186 ,  H02N2/181 ,  H02N2/188

Abstract: A piezoelectric transducer for energy-harvesting systems includes a substrate, a piezoelectric cantilever element, a first magnetic element, and a second magnetic element, mobile with respect to the first magnetic element. The first magnetic element is coupled to the piezoelectric cantilever element. The first magnetic element and the second magnetic element are set in such a way that, in response to relative movements between the first magnetic element and the second magnetic element through an interval of relative positions, the first magnetic element and the second magnetic element approach one another without coming into direct contact, and the interaction between the first magnetic element and the second magnetic element determines application of a force pulse on the piezoelectric cantilever element.

公开(公告)号：US20150035409A1

公开(公告)日：2015-02-05

申请号：US14446237

申请日：2014-07-29

Applicant: STMicroelectronics S.r.I.

Inventor： Francesco Procopio ,  Carlo Valzasina ,  Alberto Corigliano ,  Raffaele Ardito ,  Giacomo Gafforelli

IPC: H02N2/18

CPC classification number: H02N2/186 ,  H02N2/181 ,  H02N2/188

Abstract: A piezoelectric transducer for energy-harvesting systems includes a substrate, a piezoelectric cantilever element, a first magnetic element, and a second magnetic element, mobile with respect to the first magnetic element. The first magnetic element is coupled to the piezoelectric cantilever element. The first magnetic element and the second magnetic element are set in such a way that, in response to relative movements between the first magnetic element and the second magnetic element through an interval of relative positions, the first magnetic element and the second magnetic element approach one another without coming into direct contact, and the interaction between the first magnetic element and the second magnetic element determines application of a force pulse on the piezoelectric cantilever element.

Abstract translation: 用于能量收集系统的压电换能器包括相对于第一磁性元件移动的基板，压电悬臂元件，第一磁性元件和第二磁性元件。 第一磁性元件耦合到压电悬臂元件。 第一磁性元件和第二磁性元件被设置为使得响应于通过相对位置的间隔在第一磁性元件和第二磁性元件之间的相对运动，第一磁性元件和第二磁性元件接近一个 另一个不直接接触，并且第一磁性元件和第二磁性元件之间的相互作用确定了在压电悬臂元件上施加力脉冲。