公开(公告)号：US11347924B1

公开(公告)日：2022-05-31

申请号：US17572667

申请日：2022-01-11

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Qiang Liu ,  Lijun Wei ,  Xin Chen ,  Duxi Yan ,  Long Li

IPC: G06F30/39 ,  G06F30/392 ,  G06F111/10 ,  G06F111/04

Abstract: A chip layout method based on a minimum total wire length, includes: initializing a total wire length to a preset value, initializing a number of iterations, randomly generating a sequence pair to represent a positional relationship between rectangular circuit modules, inputting the sequence pair to a model, and solving to obtain a sequence pair having a minimum wire length within the number of iterations; changing a field operator of the sequence pair to obtain a new one, inputting the new sequence pair to the model, retaining, if an obtained total wire length is less than the original total wire length, the new sequence pair, or otherwise, abandoning the new sequence pair; repeating the above operation till the number of iterations is reached; and outputting a minimum total wire length, and coordinates of each rectangular circuit module to obtain the chip layout based on the minimum total wire length.

公开(公告)号：US11212921B2

公开(公告)日：2021-12-28

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

IPC: H05K3/22 ,  H05K3/26 ,  H05K1/09 ,  H05K3/28

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.

公开(公告)号：US11086306B1

公开(公告)日：2021-08-10

申请号：US17155012

申请日：2021-01-21

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Qiang Liu ,  Duxi Yan ,  Xin Chen ,  Jiewu Leng ,  Ding Zhang

IPC: G05B19/418

Abstract: A generalization and encapsulation method based on a digital twin (DT) model of a workshop includes: classifying a device in a production line according to a basic operation and a functional characteristic of a process of the device; abstracting a commonality in terms of process action mode, process algorithm and action trigger mechanism; encapsulating according to a sequence characteristic of a process; comparing processes, and generalizing and encapsulating; encapsulating according to a time sequence, a space sequence and a logic characteristic of a specific process; storing a generalized and encapsulated process in a database; and calling the generalized and encapsulated process from the database to a device or a process. The generalization and encapsulation system includes an abstract process encapsulation module, a continuous process encapsulation module, a process action encapsulation module, a process algorithm encapsulation module, a database and a fast calling module.

公开(公告)号：US11067970B1

公开(公告)日：2021-07-20

申请号：US17156622

申请日：2021-01-24

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Qiang Liu ,  Duxi Yan ,  Xin Chen ,  Lijun Wei ,  Jiewu Leng

IPC: G06G7/48 ,  G06F30/20 ,  G06F9/455 ,  G05B19/418 ,  G05B19/05

Abstract: A method for designing a production line based on digital twin (DT), includes: determining a layout strategy of a production line; customizing a DT model of production device based on a pre-built universal DT model; allowing the production device to interact with a virtual model in real time; simultaneously testing and debugging a configuration of the production line; analyzing a test and debug result to derive a defect of the production line; modifying a virtual dynamic model; repeating until an optimal result is generated through optimization and designing the product line according to the optimal result. Based on the realization of virtual and real linkage, the present disclosure performs joint debugging on a physical entity and a virtual model in the production line so as to comprehensively consider uncertainty factors of the device and better guide the modification of the simulation model according to the test result.

公开(公告)号：US10784400B2

公开(公告)日：2020-09-22

申请号：US16706713

申请日：2019-12-07

Applicant: Guangdong University of Technology

Inventor： Yun Chen ,  Dachuang Shi ,  Xin Chen ,  Qiang Liu ,  Jian Gao ,  Ching-Ping Wong

IPC: H01L33/00 ,  H01L21/683 ,  H01L23/00 ,  H01L33/62

Abstract: A mass transfer method for Micro-LEDs with a temperature-controlled adhesive layer, including: configuring a self-assembling structure based on Micro-LED dies and a transfer substrate having a self-receiving structure coated on its surface with a temperature-controlled adhesive layer; distributing the Micro-LED dies in water, soaking the transfer substrate in water and heating water to perform self-assembling; carrying out transferring and removing the transfer substrate to separate Micro-LED dies from a transfer substrate then onto a target substrate.

公开(公告)号：US10661399B2

公开(公告)日：2020-05-26

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: H02K41/02 ,  B23Q1/34 ,  B23Q1/36 ,  B81C1/00 ,  H01L21/67 ,  B23Q1/58 ,  B23Q5/28

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：US10564553B2

公开(公告)日：2020-02-18

申请号：US15853847

申请日：2017-12-24

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Qian Li ,  Youdun Bai ,  Xin Chen ,  Xun Chen ,  Yaobin He ,  Han Sun ,  Guanxin Huang ,  Baisheng Wu

IPC: G03F7/00 ,  G03F7/20 ,  F16C11/12 ,  B23Q1/44 ,  B23Q1/36

Abstract: The present invention also discloses a multi-DOF (Degree of Freedom) large-stroke high-precision motion platform system using the guide mechanism. A large load-bearing guide mechanism comprises: a rigid frame for generating a large-stroke displacement to realize high-speed motion; a core motion platform connected with a motion portion of a non-contact actuator, connected with the rigid frame by a primary flexible hinge group and a secondary flexible hinge group, and used for generating a small-stroke precise displacement by elastic deformation of the flexible hinge groups under driving of the actuator.

公开(公告)号：US10151579B1

公开(公告)日：2018-12-11

申请号：US15853849

申请日：2017-12-24

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Zhijun Yang ,  Yanfeng Li ,  Tiegen Cai ,  Qian Li ,  Xin Chen

IPC: G01D5/347 ,  G01B11/02 ,  G01D5/26

Abstract: The present invention has the advantages of simple structure, low detection cost, high measurement precision, high detection speed, strong practicability, etc. The present invention relates to a novel array photoelectric sensor grating displacement detection system and method. The system includes a parallel light source, an incremental glass grating ruler, photoelectric sensor arrays, a high-speed voltage comparator, a signal processing unit and a displacement display unit, wherein the incremental glass grating ruler is perpendicular to an irradiation direction, of the parallel light source.

公开(公告)号：US20170126112A1

公开(公告)日：2017-05-04

申请号：US15375178

申请日：2016-12-12

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Xin Chen ,  Zhijun Yang ,  Youdun Bai ,  Jian Gao ,  Hanxiong Li ,  Haidong Yang ,  Yisheng Guan ,  Xindu Chen

IPC: H02K41/02 ,  B23Q5/28 ,  B23Q1/44 ,  H02K11/22 ,  H01L41/09

CPC classification number: H02K41/02 ,  B23Q1/44 ,  B23Q5/28 ,  H01L41/09 ,  H02K11/22

Abstract: The present invention proposes a linear motor common stator dual-drive macro/micro integrated high-speed precision motion one-dimensional platform, including a base, linear guide rails, slide blocks, a U-shaped linear motor stator, a macro motion rotor, a micro motion rotor and a macro/micro integrated platform. A macro motion platform and a micro motion platform are connected to form an integrated platform by virtue of an elastic member, an outer frame of the macro/micro integrated platform is mounted on the linear guide rails and the slide blocks, the U-shaped linear motor stator is arranged on the base, rotors are respectively mounted on the macro motion platform and the micro motion platform, and large-scale overall high-speed motion can be realized when macro and micro rotors are simultaneously driven; and when a motion deviation occurs, the micro motion platform realizes precise displacement output by virtue of elastic deformation due to small inertia and zero friction, and high-frequency motion deviation compensation can be realized by virtue of individual drive. Due to composite motion control, one-dimensional high-speed precision motion can be realized, an installation and use manner is consistent with that of the traditional platform, and the one-dimensional platform is convenient to popularize and use.

公开(公告)号：US20160350462A1

公开(公告)日：2016-12-01

申请号：US15113844

申请日：2014-09-24

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Xin Chen ,  Youdun Bai ,  Zhijun Yang ,  Jian Gao ,  Haidong Yang ,  Meng Wang

IPC: G06F17/50 ,  G06T17/10

CPC classification number: G06F17/5018 ,  G06F17/50 ,  G06F17/5086 ,  G06T17/10

Abstract: Various embodiments relate to a method of planning asymmetric variable acceleration based on non-linear finite element dynamic response simulation. The planning method involves obtaining solution of a non-linear finite element model positioning process that has kinematic freedom and adopts a parameterized motion function as its boundary condition; determining whether post-driving amplitude of an execution end satisfies positioning precision, and if it does not, continuing getting solution, and if it is, adjusting an energy decay time; determining whether a target response time is minimum, and if it is, verifying the set motion parameter as optimal, and if it is not, calculating a gradient and a step size of the motion parameter, and resetting the motion parameter for solution. The present disclosure utilizes this method to plan high-speed high-acceleration motion for mechanisms that are affected by non-linear factors such as large flexible deformation and require precise positioning.

Abstract translation: 各种实施例涉及基于非线性有限元动态响应模拟来规划不对称可变加速度的方法。 规划方法包括获得具有运动自由度并采用参数化运动函数作为其边界条件的非线性有限元模型定位过程的解; 确定执行端的后驱动幅度是否满足定位精度，如果不是，则继续获得解，并且如果是，则调整能量衰减时间; 确定目标响应时间是否最小，并且如果是，则将所设置的运动参数验证为最佳，如果不是，则计算运动参数的梯度和步长，并且重新设置运动参数以进行解。 本发明利用这种方法为受非线性因素如大的挠性变形影响并需要精确定位的机构规划高速高速运动。