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公开(公告)号：US11554435B2
公开(公告)日：2023-01-17
申请号：US16733751
申请日：2020-01-03
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Xianmin Zhang , Yilin Shan , Kai Li , Chuangang Tang
Abstract: The present invention discloses a solder paste laser induced forward transfer device and method. The device comprises a laser, a beam shaping module, an optical path adjustment module, a solder paste transfer module and a computer control system, wherein the laser is connected to the beam shaping module, followed by the optical path adjustment module, and the solder paste transfer module is located below the optical path adjustment module. The beam shaping module comprises a beam expanding lens, an aperture, a flat-top beam shaper and a spatial light modulator. The optical path adjustment module comprises a two-dimensional galvanometer and an f-θ lens. The solder paste transfer module consists of a transparent substrate, a solder paste film, a clamp, a Z-axis lifting table, a receiving substrate, and an XYZ precise moving platform. The computer control system consists of a computer and drivers of other devices. The device and method can achieve mask-free, non-contact and high-precision solder paste transfer, thereby greatly shortening the production cycle and reducing the production cost.
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公开(公告)号：US09971357B2
公开(公告)日：2018-05-15
申请号：US15562898
申请日：2015-12-23
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Xianmin Zhang , Jiasi Mo , Zhicheng Qiu , Junyang Wei , Hai Li
CPC classification number: G05D3/12 , B25J9/1623 , G05B13/04 , G05B19/404 , G05B2219/50162 , G06T7/20 , G06T2207/20004 , G06T2207/30204 , H02K41/02
Abstract: A parallel platform tracking control apparatus and method using a visual device as a sensor are disclosed. The apparatus comprises a parallel platform body, a CCD camera (11), a lens (6), a camera light source (9), a computer (11), a Dspace semi-physical simulation controller, an ultrasonic motor driver and the like. The parallel platform comprises an ultrasonic linear motor (1), a linear grating encoder (5), a driven rod (2), a moving platform (3), a stationary platform (4) and the like. The CCD camera photographs the moving platform in a perpendicular and opposite manner, and the photographed images are subjected to an image processing algorithm to measure the position of the corresponding marker on the moving platform, which is not only applicable to measurement, but also implements real-time feedback of the termination position of the moving platform, such that a full closed-loop system is constituted. In this way, the parallel platform is precisely positioned.
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3.发明授权公开(公告)号：US12058202B2
公开(公告)日：2024-08-06
申请号：US18556095
申请日：2022-12-30
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Xianmin Zhang , Dongdong Xue , Yanjiang Huang
IPC: H04L67/10 , H04L67/025
CPC classification number: H04L67/10 , H04L67/025
Abstract: The present invention discloses an OPC UA based multi-mechanical device interconnection and intercommunication realization system, which realizes horizontal integration, vertical integration, and arbitrary connectivity between devices and systems by using OPC UA technologies on the basis of multiple different mechanical devices. The software system includes a plurality of different layers, which are a device layer, a device operation layer, a data acquisition layer, a data interaction layer, a network support layer, a data storage layer, an application service layer, and a user interface layer from bottom to top, and each layer has specific functions. The present invention realizes the interconnection and intercommunication of multiple mechanical devices, can realize free communication across the firewall, and has strong reliability, user friendliness, real-time performance, scalability and security.
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Patent Agency Ranking
公开(公告)号：US11929448B2
公开(公告)日：2024-03-12
申请号：US17254308
申请日：2018-10-22
Applicant: South China University of Technology
Inventor： Xianmin Zhang , Linlin Cai , Shenghui Bai
CPC classification number: H01L31/1864 , H01L22/30 , H02S50/15
Abstract: Described herein is an electric injection annealing test device for crystalline silicon photovoltaic solar cells, the test device comprises a dark box, a sample test bench, a temperature control device, a power supply device and an image acquisition device. The sample test bench, the temperature control device, the power supply device and the image acquisition device are located in the dark box; the sample test bench is used to place a solar cell sheet; the temperature control device is used to control a temperature of the solar cell sheet; the power supply device provides a current to the solar cell sheet, the image acquisition device is used to acquire electroluminescence images of the solar cell sheet under different temperatures and current conditions.
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公开(公告)号：US11745334B2
公开(公告)日：2023-09-05
申请号：US17265763
申请日：2019-10-10
Applicant: South China University of Technology
Inventor： Xianmin Zhang , Hongchuan Zhang , Benliang Zhu
CPC classification number: B25J9/10 , B25J17/00 , F16C11/12 , B25J9/0015
Abstract: A spatial large-stroke compliant hinge with hybrid structure, which includes a rectangular planar unit for implementing an out-of-plane torsion function and a crossed-shaped planar unit for achieving an in-plane rotation function. The crossed-shaped planar unit is formed by two flexible straight beam thin sheets intersecting into a crossed-shaped structure with an angle, and the rectangular planar unit and the crossed-shaped planar unit are connected through an external connection or an embedded connection.
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公开(公告)号：US10030962B2
公开(公告)日：2018-07-24
申请号：US15320505
申请日：2014-12-05
Applicant: South China University of Technology
Inventor： Xianmin Zhang , Ruizhou Wang
Abstract: Disclosed is a precision-positioning drive end pre-tightening device, which comprises a positioning platform (6), an actuator (14), a capacitive sensor (4), a capacitive sensor bracket (3), a pre-tightening block (12) and a film force sensor (13), wherein a sliding groove is provided in the middle of the positioning platform (6), and said pre-tightening block (12), said film force sensor (13) and said actuator (14) are provided in the sliding groove in sequence; the capacitive sensor bracket (3) is fixed on the positioning platform (6), and three connecting rods (3-1) which are connected in sequence via compliant hinges are axially provided at one end of the bracket body of the capacitive sensor bracket (3); an end surface of the capacitive sensor (4) and an upper side surface of the pre-tightening block (12) are parallel to each other, and a gap exists therebetween; and a two-stage pre-tightening device for pre-tightening the pre-tightening block (12) are also provided on the positioning platform (6). The technical means of the device is simple and easy, and the device can satisfy the requirements in related fields of precision positioning, precision and ultra-precision machining, precision operating, precision measurement, micro-electro-mechanical system, etc. for the precision-locating drive end pre-tightening device.
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公开(公告)号：US11649925B2
公开(公告)日：2023-05-16
申请号：US16981831
申请日：2018-10-22
Applicant: South China University of Technology
Inventor： Xianmin Zhang , Hongchuan Zhang , Benliang Zhu
CPC classification number: F16S5/00 , B25J9/0015 , F16S1/00 , G01M13/00 , B64G99/00
Abstract: A multistable compliant mechanism is formed by connecting sequentially multiple basic units front to end to form a closed annular structure. Each basic unit includes two flexible hinges perpendicular to each other on different planes and two rigid connection parts for connecting the flexible hinges. The two flexible hinges are connected by a rigid connection part, and one of the flexible hinges is connected to a flexible hinge of an adjacent basic unit through the other rigid connection part. Lengths of two rigid connection parts in a same basic unit are equal, but lengths of rigid connection parts of different basic units are not necessarily equal. The multistable compliant mechanism features the continuous rotation and multi-steady state of a tri-compliant mechanism. The multistable compliant mechanism also features variable mechanism topology, an adjustable unit number, easy implementation, and promotion. A method for steady state analysis of the multistable compliant mechanism is also provided.
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公开(公告)号：US10824780B2
公开(公告)日：2020-11-03
申请号：US15542080
申请日：2016-12-15
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Xianmin Zhang , Min Liu
IPC: G06F30/23 , G06F30/18 , G06F111/06 , G06F111/10 , G06F1/16
Abstract: A design method of topology optimization for flexible hinge is disclosed in the invention, comprising following steps: step 1: establishing a design model of topology optimization for flexible hinge, setting an outline of flexible hinge with a typical notch as a shape of design domain and defining a rigid region (non-design domain); step 2: establishing a finite element model of topology optimization for flexible hinge; step 3: establishing a mathematical model of topology optimization problem for flexible hinge based on the finite element model; step 4: calculating a sensitivity of topology optimization problem for flexible hinge; step 5: employing an optimization algorithm to solve the topology optimization problem for flexible hinge, updating a design variable and obtaining a final topology result graph; step 6: according to the final topology result graph obtained by the topology optimization, extracting its outline and obtaining a novel flexible hinge by appropriate modification. Using the method of topology optimization, the invention designs the flexible hinge on a concept level. The novel flexible hinge can be designed with a more complex structure and more excellent performances, having a larger flexibility, a higher precision and a smaller maximum stress.
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