公开(公告)号：US5517074A

公开(公告)日：1996-05-14

申请号：US435311

申请日：1995-05-05

Applicant: Engelbert Van Pelt ,  Wouter Taen

Inventor： Engelbert Van Pelt ,  Wouter Taen

IPC: H01L41/083 ,  H01L41/09 ,  H02N2/02 ,  H01L41/08

CPC classification number: H01L41/0973 ,  H02N2/02

Abstract: A piezoelectric actuator, which has a large displacement rate and a relatively simple structure, is capable of providing an output without the need for a specific support and can be manufactured at low costs, is provided. The piezoelectric actuator 10 takes a planar plate-like form and has first and second layer regions 11 and 12 lying one upon the other. The first layer region 11 is formed comprising a piezoelectric ceramic material and contains electrodes 13-1 to 13-n for receiving an actuation voltage to cause this first layer region to contract in a plane parallel thereto. The second layer region 12 is formed integrally with the first layer region 11 and comprises a ceramic material.

Abstract translation: 具有大位移率和相对简单结构的压电致动器能够提供输出而不需要特定支撑并且可以以低成本制造。 压电致动器10采取平板状形式，并且具有彼此相对置的第一和第二层区域11和12。 第一层区域11形成为包括压电陶瓷材料并且包含用于接收致动电压的电极13-1至13-n，以使该第一层区域在与其平行的平面中收缩。 第二层区域12与第一层区域11一体地形成，并且包括陶瓷材料。

公开(公告)号：US5621178A

公开(公告)日：1997-04-15

申请号：US531685

申请日：1995-09-21

Applicant: Engerbert Van Pelt ,  Wouter Taen

Inventor： Engerbert Van Pelt ,  Wouter Taen

IPC: G01L1/08 ,  G01L1/16 ,  G01L9/08 ,  G01L1/00

CPC classification number: G01L1/16 ,  G01L1/08

Abstract: A piezoelectric sensor system according to the invention employs a piezoelectric actuator relay (20) having a piezoelectric element displaceable in response to an actuation voltage and contacts (23, 24) which open or close in accordance with the displacement of the element, wherein the actuator relay (20) is adapted to receive a force (L) to be measured against the displacement. This piezoelectric actuator relay (20) is supplied, by a driver circuit (60), with a varying voltage as the actuation voltage. The relation between the forces (L) and the activation voltages necessary for opening or closing the contacts (23, 24) has been stored in a memory (70). A processor (50) obtains a value of the force (L) based on a value of the actuation voltage at the instant of the opening or closure of the contacts (23, 24) and the relation stored in the memory (70).

Abstract translation: 根据本发明的压电传感器系统采用压电致动器继电器（20），其具有响应于致动电压而可移位的压电元件和根据元件的位移打开或关闭的触点（23,24），其中致动器 继电器（20）适于接收相对于位移测量的力（L）。 该压电致动器继电器（20）由驱动电路（60）以变化的电压作为致动电压提供。 力（L）和打开或关闭触点（23,24）所需的激活电压之间的关系已被存储在存储器（70）中。 处理器（50）基于在触点（23,24）的打开或关闭瞬间的动作电压值以及存储在存储器（70）中的关系，获得力（L）的值。