-
公开(公告)号：US20240335949A1
公开(公告)日：2024-10-10
申请号：US18483499
申请日：2023-10-09
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Jian GAO , Guoqing WU , Yuheng LUO , Lanyu ZHANG , Zhuojun ZHENG , Disai CHEN , Xin CHEN
IPC: B25J9/16
CPC classification number: B25J9/1692 , B25J9/1697
Abstract: Disclosed are a kinematics parameter calibration method and system of a multi-axis motion platform. The method comprises the following steps of: collecting calibration board images in different spatial positions according to a position relation between the platform and a camera, recording a corresponding motor motion amount, solving a hand-eye pose relation matrix and a pose matrix of a calibration board coordinate system in a platform tail end coordinate system, further solving a coordinate measured value of an angular point on the calibration board in a platform base coordinate system and a coordinate theoretical value of a position matrix of the tail end of the motion platform, determining a residual error matrix according to the measured value and the theoretical value, and identifying an error parameter by the residual error matrix to complete kinematics parameter calibration of the platform.
-
22.发明公开公开(公告)号：US20240212210A1
公开(公告)日：2024-06-27
申请号：US18475025
申请日：2023-09-26
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Jian GAO , Zhenyu ZHENG , Zhuojun ZHENG , Lanyu ZHANG , Haixiang DENG , Xin CHEN
CPC classification number: G06T7/80 , B25J9/1692 , B25J9/1697 , H04N17/002 , G06T2207/10028 , G06T2207/30244
Abstract: A hand-eye calibration method based on three-dimensional point cloud of a calibration plate. The method includes: constructing a two-dimensional checkerboard calibration plate and a three-dimensional scanning system consisting of a camera and a projector; performing a calibration on each of the camera and the projector to obtain internal parameters of the two; performing a calibration on the camera and the projector to obtain a coordinate system transformation relation between the two; changing a pose of the calibration plate for at least three times, and acquiring at least three sets of transformation matrices of the calibration plate relative to a camera coordinate system and transformation matrices of an end of a manipulator relative to a manipulator base coordinate system through point cloud three-dimensional coordinates of the calibration plate; and solving to obtain a high-precision transformation matrix of the camera coordinate system relative to the manipulator base coordinate system.
-
23.发明公开公开(公告)号：US20230194249A1
公开(公告)日：2023-06-22
申请号：US18062958
申请日：2022-12-07
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Jian GAO , Guixin ZHANG , Lanyu ZHANG , Haixiang DENG , Yun CHEN , Yunbo HE , Xin CHEN
IPC: G01B11/25
CPC classification number: G01B11/254
Abstract: A three-dimensional measuring method and system for modulating three-dimensional codes at periodic edges are disclosed, the method includes: step A according to a number of phase levels and a composition rule of the three-dimensional codes, converting the number of phase levels into three-dimensional codes, modulating the three-dimensional codes to periodic edges; step B generating N pieces of modulated three-dimensional codes on periodic edges to form a sinusoidal fringe pattern, according to a N-step phase shift method; step C projecting N pieces of fringe patterns to a surface of an object, collecting the deformed N pieces of fringe patterns on the object surface; step D solving a wrapping phase and a mean intensity of N pieces of fringe patterns; step E since the mean intensities of the adjacent periodic edge codes are different, extracting edge coordinates from the mean intensities by using an edge extraction method.
-
公开(公告)号：US20230048134A1
公开(公告)日：2023-02-16
申请号：US17968960
申请日：2022-10-19
Applicant: Guangdong University of Technology
Inventor： Yun CHEN , Yuanhui GUO , Bin XIE , Lu YAN , Maoxiang HOU , Xin CHEN
IPC: B01J20/02 , B01J20/20 , B01J20/30 , B01J20/32 , B01J20/28 , C23C14/35 , C23C14/02 , C23C14/18 , C23C14/08
Abstract: A method of fabricating a magnetically-controlled graphene-based micro-/nano-motor includes: (a) mixing FeCl3 crystal powder with deionized water to obtain a FeCl3 solution; (b) completely immersing a carbon-based microsphere in the FeCl3 solution; transferring the carbon-based microsphere from the FeCl3 solution followed by heating to allow crystallization of FeCl3 on the surface of the carbon-based microsphere to obtain a FeCl3-carbon-based microsphere; (c) heating the FeCl3-carbon-based microsphere in a vacuum chamber until there is no moisture in the vacuum chamber; continuously removing gas in the vacuum chamber and introducing oxygen; and treating the FeCl3-carbon-based microsphere with a laser in an oxygen-enriched environment to obtain the magnetically controlled graphene-based micro-/nano-motor. A magnetically-controlled graphene-based micro-/nano-motor is further provided.
-
25.发明申请公开(公告)号：US20210210461A1
公开(公告)日：2021-07-08
申请号：US17037909
申请日：2020-09-30
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Yun CHEN , Shuquan DING , Yunbo HE , Maoxiang HOU , Xin CHEN , Jian GAO , Ni ZHAO , Lanyu ZHANG , Zhengping WANG
IPC: H01L23/00
Abstract: A method for processing an ultra-high density interconnect wire under light source guidance, comprising preparing a photo-thermal response conductive paste, and putting it into an air pressure injector; driving the air pressure injector; the air pressure injector extrudes the photo-thermal response conductive paste, so that the photo-thermal response conductive paste is connected with the first chip to form an interconnection wire; stopping extruding the photo-thermal response conductive paste, and driving the air pressure injector to pull off the interconnection wire; a linear light source emits light and irradiates on the interconnection wire to bend to an upper side of a second chip bonding pad; an extrusion mechanism presses a free end of the interconnection wire on the second chip bonding pad; the first chip and the second chip are subjected to glue dripping encapsulation.
-
Patent Agency Ranking
公开(公告)号：US20210176865A1
公开(公告)日：2021-06-10
申请号：US17110501
申请日：2020-12-03
Applicant: Guangdong University of Technology
Inventor： Chengqiang CUI , Guannan YANG , Guangdong XU , Yu ZHANG , Xin CHEN
Abstract: A method for repairing a fine line is provided. Nano metal particles are filled in a defect of a circuit board. The nano metal particles in the defect are irradiated by a laser, or heated, such that the nano metal particles in the defect are metallurgically bonded to an original line of the circuit board. A surface of the circuit board is cleaned to remove residual nano metal particles on parts of the circuit board where metallurgical bonding is not performed, thereby completing line repairing of the circuit board.
-
27.发明申请公开(公告)号：US20190352789A1
公开(公告)日：2019-11-21
申请号：US16383852
申请日：2019-04-15
Applicant: Guangdong University of Technology
Inventor： Yun CHEN , Xin CHEN , Dachuang SHI , Xun CHEN , Qiang LIU , Jian GAO , Chengqiang CUI
IPC: C25D5/02 , C25D7/12 , C25D3/38 , C25D17/00 , H01L21/288 , H01L21/768
Abstract: A method for synchronous electroplating filling of differential vias and an electroplating device. Laser irradiation is adopted as an external energy field to assist synchronous electroplating filling of differential vias. A mask or digital maskless technology is used to precisely heat the vias with different positions and different sizes. The filling rate of different regions varies with the temperature difference, thereby realizing the synchronous electroplating filling of differential vias in one step. In the processes of immersion pre-wetting by the electroplating liquid and electroplating filling copper, the laser is used for preheating the wafer processed with vias. In these two steps, the laser needs to locally and precisely heat upper surfaces of the micro vias on the wafer through the mask corresponding to the micro vias on the wafer.
-
公开(公告)号：US20250134683A1
公开(公告)日：2025-05-01
申请号：US18621119
申请日：2024-03-29
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Xun CHEN , Rongguang ZHANG , Xuanzhi ZHANG , Xin CHEN , Han WANG , Jingsong YAO
Abstract: The present disclosure belongs to the technical field of drug delivery and biomimetic structures inducing cell proliferation and differentiation, and in particular relates to a micro-nano medical stent for directional, quantitative and timed controlled release of drug and a preparation method thereof. The micro-nano medical stent provided by the present disclosure is composed of an ordered fiber structure electrospun as a skeleton layer and a disordered fiber structure electrospun as an ECM layer that can both load drugs. The micro-nano medical stent can achieve directional, quantitative and timed release of drugs.
-
29.发明申请公开(公告)号：US20240378839A1
公开(公告)日：2024-11-14
申请号：US18767924
申请日：2024-07-09
Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY
Inventor： Jian GAO , Junlang LIANG , Lanyu ZHANG , Yuheng LUO , Zhuojun ZHENG , Xin CHEN
Abstract: The present application provides an image stitching method, apparatus and device based on reinforcement learning and a storage medium. The method includes: acquiring initial calibration parameters, collecting a sample image and position information of a motion platform; setting a negative reward function; acquiring a state set and a negative reward value set according to a randomly generated action set, the initial calibration parameters, the position information of the motion platform and the negative reward function to construct a probability kinematics model; constructing a state value function based on an occurrence probability of the state, and acquiring an optimal action by optimizing the state value function; and acquiring optimized calibration parameters through the optimal action and the initial calibration parameters, and carrying out image stitching on corresponding sample images through the optimized calibration parameters. The application solves the technical problem of low image stitching quality in the prior art.
-
30.发明公开公开(公告)号：US20240363792A1
公开(公告)日：2024-10-31
申请号：US18769404
申请日：2024-07-11
Applicant: Guangdong University of Technology
Inventor： Yun CHEN , Yanhui CHEN , Li MA , Pengwei LV , Hao ZHANG , Maoxiang HOU , Xin CHEN
IPC: H01L33/00 , H01L21/68 , H01L21/683 , H01L25/075
CPC classification number: H01L33/005 , H01L21/681 , H01L21/6835 , H01L25/0753
Abstract: A device for mass transfer of Mini-LEDs based on array water jet-based ejection, including a planar motion platform, a vision camera, an array water jet-type ejection unit, a Z-axis motion platform, a blue membrane, an operation platform and a transfer substrate. The vision camera and the array water jet-type ejection unit are provided on a side of the planar motion platform. The array water jet-type ejection unit includes a water jet channel and a through-hole array. The Z-axis motion platform is provided at a side of the planar motion platform near the vision camera, and is configured for placement of the blue membrane. Multiple Mini-LED chips are bonded to the blue membrane. The operation platform is spacedly provided at a side of the Z-axis motion platform away from the planar motion platform.
-
-
-
-
-
-
-
-
-
Search Results
40
records
(took 0.03 seconds)
