公开(公告)号：US20180104779A1

公开(公告)日：2018-04-19

申请号：US15844571

申请日：2017-12-17

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： ZHIJUN YANG ,  Youdun BAI ,  XIN CHEN ,  Chaoran CHEN

IPC: B23Q1/34 ,  H01L21/67 ,  B81C1/00

CPC classification number: B23Q1/34 ,  B23Q1/36 ,  B23Q1/58 ,  B23Q5/28 ,  B23Q2210/002 ,  B81C1/00126 ,  H01L21/67126 ,  H02K41/02

Abstract: The present invention discloses a single-drive rigid-flexible coupling precision motion platform, including a machine base, a linear guide rail, a rigid-flexible coupling motion platform, a linear driver and a displacement sensor, wherein the rigid-flexible coupling motion platform includes a rigid frame, flexible hinges and a core motion platform; and the core motion platform of the rigid-flexible coupling motion platform is connected with the rigid frame through the flexible hinges. In this arrangement, the single-drive rigid-flexible coupling precision motion platform disclosed by the present invention can realize high-accuracy continuous change displacements of the platform, thereby avoiding displacement “jitter” caused by sudden change of acceleration. The present invention further discloses a realization method and an application including the above platform.

公开(公告)号：US20210126557A1

公开(公告)日：2021-04-29

申请号：US17014997

申请日：2020-09-08

Applicant: Guangdong University of Technology

Inventor： Zhijun YANG ,  Jianbin HUANG ,  Yutai WEI ,  Zhongyi GAO ,  Guanxin HUANG ,  Youdun BAI

IPC: H02N2/12 ,  H02N2/14 ,  F16M11/20

Abstract: A novel high-precision rigid-flexible coupling rotating platform includes a foundation, a rigid bearing, a bearing sleeve, a core rotating platform, a rotating driver and a coder; the bearing sleeve is fixed on the foundation; the rigid bearing is in rotatable drive connection with the core rotating platform, and connected with the foundation through the bearing sleeve; an upper surface of the core rotating platform is provided with a plurality of groups of flexible hinges; when the rotating driver applies a driving force to rotate the core rotating platform, the driving force elastically deforms the flexible hinge rings. The flexible hinges are used and disposed on the upper surface of the core rotating platform; without disassembling the whole rotating platform, a corresponding group of flexible hinges can be changed but an assembling relationship between other groups of flexible hinges cannot be broken.

公开(公告)号：US20210126515A1

公开(公告)日：2021-04-29

申请号：US16741777

申请日：2020-01-14

Applicant: Guangdong University of Technology

Inventor： Zhijun YANG ,  Shengqiang WEI ,  Hao PENG ,  Youdun BAI ,  Guanxin HUANG

IPC: H02K24/00 ,  H02K7/12 ,  H02K21/14 ,  H02K7/08 ,  G05B19/19 ,  H02K11/21

Abstract: A rigid-flexible coupling high-accuracy galvo scanning motor comprises: a stator, a rotor rotating relative to the stator, bearing seats and at least two groups of encoders. The rigid-flexible coupling bearings are installed on the rotating shaft of the rotor; each of the rigid-flexible coupling bearings comprises: a rigid bearing and a flexible hinge ring which is elastically deformable, and the flexible hinge ring is fixed in an inner ring of the rigid bearing; the at least two groups of encoders comprise: a first group of encoders and a second group of encoders; the first group of encoders is used to measure a rotation angle of the rotating shaft; and the second group of encoders is used to measure a rotation angle of the inner ring of the rigid bearing. A friction dead zone is avoided through the elastic deformation of the flexible hinge ring, thereby reducing a disturbance bandwidth.

公开(公告)号：US20200065693A1

公开(公告)日：2020-02-27

申请号：US16191967

申请日：2018-11-15

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun YANG ,  Youdun BAI ,  Yaobin HE ,  Xin CHEN

IPC: G06N7/00 ,  G06F17/13

Abstract: A control method for converting time-varying system into a time-invariant system, comprises: using (n−1)th to 0th order signals of an nth-order time-varying, system as feedback to set up a closed loop control for the time-varying system; acquiring real-time values of the coefficients in each order of the time-varying system through a sensor, and calculating variations between the real-time values and the initial values of the coefficients in each order through a controller; amplifying and summing the parameters of every order to obtain a measured disturbance; inputting the measured disturbance, a control signal from a controller and an nth-order signal into an extended state observer through to estimate the rest disturbance; summing up the measured and estimated disturbances to obtain total disturbances; and adjusting the above parameters in each order through the controller to convert the time-varying system into the tune-invariant system.