公开(公告)号：US12247856B2

公开(公告)日：2025-03-11

申请号：US18280240

申请日：2022-07-05

Applicant: HEFEI UNIVERSITY OF TECHNOLOGY

Inventor： Fangfang Liu ,  Xinyang Liu ,  Wei Zhou ,  Xin Ran ,  Hongli Li ,  Haojie Xia

IPC: G01D5/353 ,  G01B11/14

Abstract: A micro-displacement measurement system having a picometer scale resolution and a measurement method. The measurement system comprises a probe module, a demodulation optical path module, a static lock-in amplification module, an upper computer module, and a micro-displacement drive module. The probe module comprises a measurement FBG sensor, a matching FBG sensor, a precision stainless steel needle tube, and an external support; the demodulation optical path module comprises an ASE broadband light source, a first circulator, a second circulator, and an InGaAs photodetector; the upper computer module comprises a data acquisition card and a computer; and the micro-displacement drive module comprises a piezoelectric ceramic nano-positioner, a piezoelectric ceramic driver, a three-dimensional precision micro-motion platform.

公开(公告)号：US09941818B2

公开(公告)日：2018-04-10

申请号：US14917012

申请日：2015-04-08

Applicant: HEFEI UNIVERSITY OF TECHNOLOGY

Inventor： Liandong Yu ,  Chengliang Pan ,  Liling Han ,  Huaxia Deng ,  Weishi Li ,  Haojie Xia ,  Wei Zhang ,  Siying Lu

IPC: H02N2/12 ,  H02N2/10 ,  H02N2/14

CPC classification number: H02N2/101 ,  H02N2/103 ,  H02N2/12 ,  H02N2/14

Abstract: A micro inchworm-type piezoelectric-driven rotating joint mechanism includes a U-shaped base, bearing pedestals, bearing brackets, bearing rings, piezoelectric ceramic plates, a rotating shaft, a rotating sleeve and end caps. Every bearing ring is divided into two half-rings which are coupled to the bearing pedestals via two bearing brackets. One end of every piezoelectric ceramic plate is fixed to one bearing pedestal, and the other end thereof is coupled to one bearing ring, so that every piezoelectric ceramic plate stretches and deforms under the driving of voltage for driving the bearing ring to achieve micro motions. Two bearing driving modules are respectively symmetrically mounted at two sides of the U-shaped base, and the rotating shaft is supported on the two bearing rings, so that the stepping motion of the rotating shaft is implemented by controlling the timing sequence of clamping, release and rotation of the two bearing driving modules.

公开(公告)号：US20160218641A1

公开(公告)日：2016-07-28

申请号：US14917012

申请日：2015-04-08

Applicant: HEFEI UNIVERSITY OF TECHNOLOGY

Inventor： Liandong Yu ,  Chengliang Pan ,  Liling Han ,  Huaxia Deng ,  Weishi Li ,  Haojie Xia ,  Wei Zhang ,  Siying Lu

IPC: H02N2/10 ,  H02N2/12

CPC classification number: H02N2/101 ,  H02N2/103 ,  H02N2/12 ,  H02N2/14

Abstract: Disclosed is a micro inchworm-type piezoelectric-driven rotating joint mechanism, including a U-shaped base, bearing pedestals, bearing brackets, bearing rings, piezoelectric ceramic plates, a rotating shaft, a rotating sleeve and end caps. Every bearing ring is divided into two half-rings which are coupled to the bearing pedestals via a pair of bearing brackets. One end of every piezoelectric ceramic plate is fixed to one bearing pedestal, and the other end thereof is coupled to one bearing ring, so that every piezoelectric ceramic plate stretches and deforms under the driving of voltage for driving the bearing ring to achieve micro motions, such as clamping, releasing and rotating. A pair of bearing driving modules are respectively symmetrically mounted at two sides of the U-shaped base, and the rotating shaft is supported on the two bearing rings, so that the stepping motion of the rotating shaft is implemented by controlling the timing sequence of clamping, release and rotation of the two bearing driving modules. The present invention has an ingenious structural improvement, adopts the symmetrically structural arrangement and uses the dual-clamping dual-rotating control mode, so as to maintain the stable clamping force, improve the operational efficiency and stability, optimize the arrangement of the piezoelectric ceramic plates, and reduce the complexity of the driving circuit while facilitating control.

Abstract translation: 公开了一种微型蚯蚓型压电驱动旋转接头机构，包括U型底座，轴承座，轴承座，轴承环，压电陶瓷板，旋转轴，旋转套筒和端盖。 每个轴承圈分为两个半环，通过一对轴承座联接到轴承座。 每个压电陶瓷板的一端固定在一个轴承座上，另一端连接在一个轴承环上，使每个压电陶瓷板在用于驱动轴承圈的电压驱动下拉伸和变形，实现微动作， 例如夹紧，释放和旋转。 一对轴承驱动模块分别对称地安装在U形底座的两侧，旋转轴支撑在两个轴承环上，从而通过控制夹紧的时序顺序来实现旋转轴的步进运动 ，两个轴承驱动模块的释放和旋转。 本发明具有巧妙的结构改进，采用对称结构布置，采用双夹紧双旋转控制方式，保持了稳定的夹紧力，提高了操作效率和稳定性，优化了压电陶瓷板的布置 并且在促进控制的同时降低驱动电路的复杂性。