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71.发明授权公开(公告)号：US11446814B2
公开(公告)日：2022-09-20
申请号：US17286780
申请日：2020-06-01
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Yongshun Zhang , Dianlong Wang , Zhenqiang Yang , Pengzhi Jia
Abstract: An electromagnetic drive spherical robotic wrist with two degrees of freedom and a control method therefor, which is particularly a highly integrated active spherical robotic wrist, realizes pitch and yaw rotation with two degrees of freedom under the direct drive of a coaxial following magnetic torque of a spatial universal rotational magnetic field through a built-in permanent magnet cylinder with radial magnetization of a following mechanism formed by coaxial connection of two output ends of internal and external universal joints with the same rotation center. The electromagnetic drive spherical robotic wrist overcomes the disadvantages of a complex transmission mechanical wrist, and a wrist transmission system has a simple and light structure, high transmission efficiency, good static and dynamic performance, and fast control response.
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公开(公告)号：US20220267878A1
公开(公告)日：2022-08-25
申请号：US17630905
申请日：2020-06-12
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Yi TAN , Xinpeng ZHUANG , Longhai ZHAO , Xiaogang YOU , Pengting LI , Yinong WANG
Abstract: A method for preparing high-purity nickel-based superalloy includes the steps of: performing electron beam smelting on small cylinders in a first water-cooled copper crucible after preheating an electron gun, and converging the beam to the edge of one side of the ingot; turning on the electron gun again after completely solidifying the ingot, the electron beam spot uniformly and slowly scanning a surface of the ingot from a side opposite to a final beam converging area of the ingot to the final beam converging area of the ingot to ensure that the alloy at a position scanned by the electron beam spot is completely melted, and stopping scanning once scanning to the final converging area of the ingot; casting the molten alloy in the first water-cooled copper crucible to the second water-cooled copper crucible; taking out the refined nickel-base superalloy after cooling down the electron beam melting furnace.
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公开(公告)号：US11421214B2
公开(公告)日：2022-08-23
申请号：US16772063
申请日：2019-10-25
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Changhai Liang , Li Wang , Shengxian Liu , Tongyi Dou , Changhao Cui
Abstract: The invention belongs to the technical field of green chemistry, and provides a novel system based on a new nitrile hydratase for highly efficient catalytic conversion of aliphatic dinitriles. The invention discloses a new application of nitrile hydratase using Rhodococcus erythropolis CCM 2595 in catalyzing aliphatic dinitrile. In particular, the enzyme can regioselectivity catalyze the formation of 5-cyanopyramides from adiponitrile with high reaction rate under mild reaction conditions, which provides a new method for the industrial production of 5-cyanopyramides.
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公开(公告)号：US11413672B2
公开(公告)日：2022-08-16
申请号：US17056878
申请日：2019-11-20
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Shijian Yuan , Kailun Zheng , Zhubin He
Abstract: The present disclosure discloses an apparatus and a method for forming a large-scale thin-walled ring shell by hot-press bending with internal gas pressure. The method comprises: welding a first head and a second head to the pipe; arranging a first electrode and a second electrode at the two ends of the pipe; charging compressed gas to the heated sealed pipe assembly; placing the sealed pipe assembly between the convex part of the first die and the concave part of the second die, controlling the temperatures of the first and second dies to perform press bending; increasing the gas pressure in the bent sealed pipe assembly, to attach the bent sealed pipe assembly to the die cavity profile; discharging the compressed gas, cutting the first head, second head and extra material to obtain a formed ring shell segment; welding formed ring shell segments to obtain a large-scale thin-walled ring shell.
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公开(公告)号：US20220241733A1
公开(公告)日：2022-08-04
申请号：US17623816
申请日：2019-07-05
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Abstract: The present invention belongs to the technical field of membranes and provides a carbon nanotube/nanofiber conductive composite membrane and a preparation method thereof. The conductive membrane with a meshy pore structure intertwined by one-dimensional nano materials is constructed by taking one-dimensional nanofiber nonwovens prepared by electrospinning as a support layer and CNTs cross linked on the support layer as a separation layer. The membrane pore size of the composite membrane involved can be controlled from microfiltration to ultrafiltration, and membrane morphology includes flat membranes, hollow fiber membranes, and spiral-wound membranes. The main advantages and beneficial effects of the composite membrane involved are: simple preparation steps, better permeability and mechanical strength, good hydrophilicity and electrical conductivity, and easy mass production and application.
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Patent Agency Ranking
公开(公告)号：US20220230324A1
公开(公告)日：2022-07-21
申请号：US17336748
申请日：2021-06-02
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Xin YANG , Haiyang MEI , Wen DONG , Xiaopeng WEI , Dengping FAN
Abstract: A method for segmenting a camouflaged object image based on distraction mining is disclosed. PFNet successively includes a multi-layer feature extractor, a positioning module, and a focusing module. The multi-layer feature extractor uses a traditional feature extraction network to obtain different levels of contextual features; the positioning module first uses RGB feature information to initially determine the position of the camouflaged object in the image; the focusing module mines the information and removes the distraction information based on the image RGB feature information and preliminary position information, and finally determines the boundary of the camouflaged object step by step. The method of the present invention introduces the concept of distraction information into the problem of segmentation of the camouflaged object and develops a new information exploration and distraction information removal strategy to help the segmentation of the camouflaged object image.
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公开(公告)号：US11386878B2
公开(公告)日：2022-07-12
申请号：US16487405
申请日：2017-04-26
Applicant: Dalian University of Technology
Inventor： Xiaoming Wang , Yulin Mei , Yixuan Mei
IPC: G10K11/168 , G10K11/00 , E04B1/84
Abstract: A broadband ultrathin sound absorption or sound insulation structure controlling an acoustic wave propagation path has at least one sound absorption unit or one sound insulation unit; and each sound absorption unit or sound insulation unit has at least one acoustic wave focused section and at least one acoustic wave absorption section. The acoustic wave focused section is formed by an acoustic wave focused cavity filled with acoustic material. The acoustic wave focused section controls the acoustic wave propagation path through the change of a section of the cavity and the change of material equivalent parameters in the cavity, so that the acoustic waves are focused and propagate along the curve. The acoustic wave absorption section realizes efficient broadband sound absorption through the filled sound absorption materials and the arranged periodic local oscillators along an ultralong path of acoustic wave absorption labyrinth passage.
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公开(公告)号：US20220215569A1
公开(公告)日：2022-07-07
申请号：US17603856
申请日：2020-03-05
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY , PENG CHENG LABORATORY
Inventor： Wei ZHONG , Hong ZHANG , Haojie LI , Zhihui WANG , Risheng LIU , Xin FAN , Zhongxuan LUO , Shengquan LI
Abstract: The present invention belongs to the field of image processing and computer vision, and discloses an acceleration method of depth estimation for multiband stereo cameras. In the process of depth estimation, during binocular stereo matching in each band, through compression of matched images, on one hand, disparity equipotential errors caused by binocular image correction can be offset to make the matching more accurate, and on the other hand, calculation overhead is reduced. In addition, before cost aggregation, cost diagrams are transversely compressed and sparsely matched, thereby reducing the calculation overhead again. Disparity diagrams obtained under different modes are fused to obtain all-weather, more complete and more accurate depth information.
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公开(公告)号：US20220212339A1
公开(公告)日：2022-07-07
申请号：US17564588
申请日：2021-12-29
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Xin YANG , Boyan WEI , Baocai YIN , Qiang ZHANG , Xiaopeng WEI , Zhenjun DU
IPC: B25J9/16
Abstract: The present invention belongs to the technical field of computer vision and provides a data active selection method for robot grasping. The core content of the present invention is a data selection strategy module, which shares the feature extraction layer of backbone main network and integrates the features of three receptive fields with different sizes. While making full use of the feature extraction module, the present invention greatly reduces the amount of parameters that need to be added. During the training process of the main grasp method detection network model, the data selection strategy module can be synchronously trained to form an end-to-end model. The present invention makes use of naturally existing labeled and unlabeled labels, and makes full use of the labeled data and the unlabeled data. When the amount of the labeled data is small, the network can still be more fully trained.
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公开(公告)号：US20220195788A1
公开(公告)日：2022-06-23
申请号：US17210495
申请日：2021-03-23
Applicant: Dalian University of Technology
Abstract: A purification window embedded with a ventilation system, including: a window frame, and a double-layered glass window unit arranged in the window frame. An outdoor window screen roll and an indoor window screen roll are arranged at a left stile and a right stile, respectively. An upper middle position and a lower middle position of the double-layered glass window unit are respectively in rotational connection with a top rail via an upper shaft and a bottom rail via a lower shaft. The ventilation system includes: an air supply chamber and an exhaust chamber, both of which provided therein with T-shaped air dampers and fans. Both external edges of the outdoor window screen roll and the indoor window screen roll are provided with magnetic tapes configured for fixation connection with the upper shaft and the lower shaft.
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