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    DEEP LEARNING-BASED DIGITAL HOLOGRAPHIC CONTINUOUS PHASE NOISE REDUCTION METHOD FOR MICROSTRUCTURE MEASUREMENT
    3.
    发明公开
    DEEP LEARNING-BASED DIGITAL HOLOGRAPHIC CONTINUOUS PHASE NOISE REDUCTION METHOD FOR MICROSTRUCTURE MEASUREMENT 审中-公开

    公开(公告)号：US20240361727A1

    公开(公告)日：2024-10-31

    申请号：US18599084

    申请日：2024-03-07

    申请人： ZHEJIANG SCI-TECH UNIVERSITY

    发明人： Benyong CHEN ,  Jianjun TANG ,  Liping YAN ,  Liu HUANG

    IPC分类号： G03H1/08 ,  G01B11/25 ,  G03H1/16

    CPC分类号： G03H1/0866 ,  G01B11/2527 ,  G03H1/16 ,  G03H2001/0875

    摘要： A deep learning-based digital holographic continuous phase noise reduction method for microstructure measurement is provided. A MEMS microstructure is simulated to generate an object phase image through generation of random matrix superposition, noise in a digital holographic continuous phase map is simultaneously simulated to generate a noise grayscale image, and a simulation data set is thus created. An end-to-end convolutional neural network is designed, and a trained convolutional neural network is trained and obtained. A holographic interference pattern of an object under measurement is collected by photographing, and after spectrum extraction, angular spectrum diffraction, phase unwrapping, and distortion compensation, a continuous phase map containing only the object phase and noise is obtained and input into the trained convolutional neural network to obtain an object phase map. A simulation data set is accurately created in the disclosure, thereby the difficulty of collecting a large amount of experimental data is avoided.

    METHOD FOR MODIFYING CARBON FIBER AND PRODUCT THEREOF
    5.
    发明申请
    METHOD FOR MODIFYING CARBON FIBER AND PRODUCT THEREOF 有权

    公开(公告)号：US20220364300A1

    公开(公告)日：2022-11-17

    申请号：US17878227

    申请日：2022-08-01

    申请人： ANHUI POLYTECHNIC UNIVERSITY ,  ZHEJIANG SCI-TECH UNIVERSITY

    发明人： Li YANG ,  Zhenzhen XU ,  Qingqing NI ,  Yuan CHEN

    IPC分类号： D06M11/74 ,  C23C14/35 ,  C23C14/58 ,  C23C14/02 ,  C23C14/06

    摘要： A method for modifying carbon fibers and a product thereof are provided. Modified carbon fibers are obtained by heating prepared carbon fibers under an inert atmosphere after magnetron sputtering treatment. The magnetron sputtering treatment takes the prepared carbon fibers as a substrate material and carbon as a target material, and sputtering conditions includes: a vacuum degree of 2×10−3 Pa, a distance from the target material to the substrate material of 4 cm, a magnetron sputtering power of 150-350 W, a magnetron sputtering pressure of 0.5-1.6 Pa, a magnetron sputtering duration of 20-60 min, a high purity argon as working gas, and an argon flow rate of 80 mL/min The heating treatment is carried out under conditions including: a heating rate of 5° C./min, a heating temperature of 200-600° C., and a heating duration of 25-40 min.

    Weaving Method Of Weft-Backed Jacquard Fabric With Color Shading Effect
    7.
    发明申请
    Weaving Method Of Weft-Backed Jacquard Fabric With Color Shading Effect 有权

    公开(公告)号：US20220170185A1

    公开(公告)日：2022-06-02

    申请号：US17538619

    申请日：2021-11-30

    申请人： Zhejiang Sci-Tech University

    发明人： Jiu Zhou ,  Xi Peng

    IPC分类号： D03D13/00 ,  D03D15/54

    摘要： The present disclosure provides a weaving method of a weft-backed jacquard fabric with color shading effects and belongs to the technical field of weaving methods. In a single-warp and double-weft structure with a weft yarn arrangement ratio of Wefts A and Wefts B of 2:1, by designing two groups of face weaves and backing weaves and corresponding backed points and using a shaded strengthening method, two color shading effects of color shading of the Wefts A and mixed color shading of the Wefts A and the Wefts B of the fabric are achieved. A maximum number of shaded weaves is [R/N(6R−2J2−J1−3)+2], and a grade number of shaded color is less than or equal to the maximum number of the shaded weaves. The designed fabric meets the covering requirements and can be mass produced.

    Differential sinusoidal phase modulation laser interferometric nanometer displacement measuring apparatus and method
    8.
    发明授权
    Differential sinusoidal phase modulation laser interferometric nanometer displacement measuring apparatus and method 有权

    公开(公告)号：US11255655B2

    公开(公告)日：2022-02-22

    申请号：US17256011

    申请日：2019-09-04

    申请人： ZHEJIANG SCI-TECH UNIVERSITY

    发明人： Liping Yan ,  Benyong Chen ,  Yingtian Lou ,  Jiandong Xie

    IPC分类号： G01B9/02 ,  G01B11/14

    摘要： The disclosure discloses a differential sinusoidal phase modulation laser interferometric nanometer displacement measuring apparatus and method. The beam output from the single-frequency laser is converted into a 45° linearly polarized beam after passing through the polarizer, then projected onto two sets of sinusoidal phase modulation interferometers consisting of the beam splitter, the electro-optic phase modulator, the half wave plate, three pyramid prisms, two polarization beam splitters, thereby forming measurement and reference interference signals which are received by two photodetectors. A high-frequency sinusoidal voltage signal is applied to the electro-optic phase modulator placed in the common reference arm of the two interferometers, thereby modulating the interference signal into a high-frequency AC signal. By detecting the difference between the phase change amounts of the two interference signals when the measured object moves, the measured displacement can be obtained.

    Phase delay extraction and compensation method in PGC phase demodulation technology
    9.
    发明授权
    Phase delay extraction and compensation method in PGC phase demodulation technology 有权

    公开(公告)号：US11168975B2

    公开(公告)日：2021-11-09

    申请号：US16868550

    申请日：2020-05-07

    申请人： ZHEJIANG SCI-TECH UNIVERSITY

    发明人： Benyong Chen ,  Jiandong Xie ,  Liping Yan

    IPC分类号： G01B9/02

    摘要： The disclosure discloses a phase delay extraction and compensation method in a PGC phase demodulation technology. The sinusoidal phase modulation interference signal is converted into a digital interference signal by an analog-to-digital converter after amplification and filtering, and the digital interference signal is subjected to orthogonal downmixing of first-order, second-order, and fourth-order harmonics simultaneously to obtain three pairs of orthogonal harmonic amplitude signals. The three pairs of orthogonal harmonic amplitude signals are used to extract phase delay, and the result is used to calculate the corresponding phase delay correction coefficients, and the phase delay correction coefficient are multiplied by the corresponding absolute harmonic amplitude signal equal to the sum of the absolute value of the orthogonal harmonic amplitude signals to obtain a new harmonic amplitude signal that is not affected by the phase delay, then the phase to be measured is obtained through the arc tangent operation.

    Two rotational and one translational degrees of freedom parallel manipulator with high rotational capability
    10.
    发明授权
    Two rotational and one translational degrees of freedom parallel manipulator with high rotational capability 有权

    公开(公告)号：US10539211B2

    公开(公告)日：2020-01-21

    申请号：US15741430

    申请日：2017-03-23

    申请人： Zhejiang Sci-Tech University

    发明人： Lingmin Xu ,  Qinchuan Li ,  Wei Ye

    IPC分类号： B25J17/00 ,  B25J17/02 ,  B25J18/00 ,  F16H21/54 ,  B25J9/00

    摘要： Disclosed is a two-turn-one-movement parallel mechanism with a large turning angle, comprising a machine frame, a movable platform, a first branch and two second branches, characterized in that the first branch comprises a machine frame turning pair, a first moving pair slider, a first moving pair guide rod and a first universal joint; each one of the second branches comprises a second moving pair guide rail, a second moving pair slider, a second universal joint, a connecting rod and a movable platform turning pair; in the two second branches, the axis of the first turning pair of each one of the second universal joints is superimposed with and parallel to the axis of the machine frame turning pair in the first branch, and the axis of each one of the movable platform turning pairs is parallel to the second turning axis of the first universal joint in the first branch.