公开(公告)号：US11758641B2

公开(公告)日：2023-09-12

申请号：US17228124

申请日：2021-04-12

Applicant: Dalian University of Technology

Inventor： Kai Zhao ,  Zixuan Su ,  Yongxin Liu ,  Younian Wang

IPC: H05H1/46

CPC classification number: H05H1/4645

Abstract: The present disclosure relates to a power supply system for improving plasma uniformity and a method thereof, wherein the power supply system includes a signal generating device, a first electrode and a second electrode. The signal generator is respectively connected with a plurality of signal processing circuits and is used for generating a plurality of initial signals at different frequencies; the signal processing circuits are used for processing the initial signals at corresponding frequencies; the plurality of signal processing circuits are all connected with the first electrode; and the initial signals are processed by the signal processing circuits and then act on the plasma through the first electrode. The present disclosure may effectively process signals in different power supplies, improve the stability of plasma discharge, reduce the impact of the coupling effect between different power supplies, and realize the independent control of ion flux and ion energy.

公开(公告)号：US11753976B2

公开(公告)日：2023-09-12

申请号：US17281214

申请日：2019-10-08

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wuqiang Long ,  Ge Xiao ,  Hua Tian ,  Jingchen Cui

IPC: F01N3/022 ,  B01D46/24 ,  F01N3/02

CPC classification number: F01N3/022 ,  B01D46/247 ,  B01D46/249 ,  B01D46/2486 ,  B01D46/2488 ,  B01D46/2492 ,  F01N3/0222 ,  B01D2279/30 ,  F01N2330/34

Abstract: A particulate trap filter body has asymmetrical channels. The cross-sectional shape of the asymmetrical channel structure includes a combination of hexagonal, square and triangular shapes. The hexagonal channel and the triangular channel act as inlet channel, and the square channel acts as outlet channel. Compared with the traditional symmetrical filter body structure, the inlet channel volume and filter body wall area can be effectively increased by more than 30%, which means that with capturing the same amount of particles, the particle cake layer formed on the wall surface is thinner. The limiting carbon load of the new channel structure is increased by more than 30%, having a very positive effect on reducing the regeneration frequency and prolonging the service life of the trap.

公开(公告)号：US20230264244A1

公开(公告)日：2023-08-24

申请号：US17779696

申请日：2021-06-30

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Siying LING ,  Ming LING ,  Xiangsheng LIU ,  Honglin REN ,  Yang YANG ,  Liding WANG

IPC: B21B1/085

CPC classification number: B21B1/085

Abstract: A generating device based on friction drive for gear involute artifact with long-rolled path length by rolling method is proposes. The device includes a roller component, rail component and friction-driven component, wherein the roller component consists of a gear involute artifact with long rolled length, a mandrel, a multi-ball bearing for gear involute artifact, the base-circle plates, the parallel sleeves, a multi-ball bearing, the plain washers, the cross washers, and the locking nuts; the rail component consists of a foundation, a location baffle for base-circle plates, rails, the baffles, a location baffle for rail, copper washers, the connecting screws and the set screws of the rail; and the friction-driven component consists of a friction block, a motorized linear sliding table, a vertical sliding table, a vertical foundation and an adapter. It has good market application prospect and popularization value.

公开(公告)号：US20230252203A1

公开(公告)日：2023-08-10

申请号：US17780290

申请日：2021-10-18

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xueguan SONG ,  Changan ZHOU ,  Kunpeng LI ,  Xiwang HE ,  Qingye LI

IPC: G06F30/20 ,  G06F30/17

CPC classification number: G06F30/20 ,  G06F30/17 ,  G06F2119/08

Abstract: A multidisciplinary structural design optimization method for a fuel assembly based on co-simulation takes the fuel assembly as a research object, and establishes a surrogate model by determining appropriate optimization design parameters with respect to the optimization requirements and low design of experiments efficiency of the fuel assembly under the working conditions of flow, solid and thermal multidisciplinary coupling. At the same time, the method combines optimization algorithms to realize the structural optimization design of a flaky fuel assembly with multiple narrow flow channels based on the characteristic of rapid optimization of ISIGHT, thereby effectively solving the problem of uneven temperature distribution of the structure. The method integrates NX, ICEM CFD, FLUENT and ABAQUS based on ISIGHT to construct a co-simulation platform, does not need to repeatedly manually set the software in multiple calculations, and can greatly save time cost while satisfying design requirements, and can shorten an optimization cycle.

公开(公告)号：US11695358B2

公开(公告)日：2023-07-04

申请号：US17431326

申请日：2020-10-27

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Ximing Sun ,  Jianyi Zhang

IPC: H02P21/00 ,  H02P21/13 ,  H02P21/18 ,  H02P21/22

CPC classification number: H02P21/13 ,  H02P21/18 ,  H02P21/22

Abstract: A speed control method for a permanent magnet synchronous motor considering current saturation and disturbance suppression aims to effectively ensure that a current of the motor is always within a given range to avoid the problem of control performance reduction caused by the fact that the current gets into a saturation state, ensure the safety of a system, do not need to use unavailable state variables such as motor acceleration and the like, effectively estimate and compensate disturbances including parameters uncertainty and unknown load torque disturbance existing in a permanent magnet synchronous motor system, and rapidly and accurately control a speed of the motor finally. There is no need to configure a plurality of sensors in practical industrial application, so system building costs can be reduced on the one hand, and the stability of the system can be improved on the other hand.

公开(公告)号：US11692827B2

公开(公告)日：2023-07-04

申请号：US17626299

申请日：2021-07-28

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Zhenguo Jing ,  Wei Peng ,  Ang Li ,  Yueying Liu ,  Qiang Liu ,  Zhiyuan Huang ,  Yang Zhang

IPC: G01C19/72 ,  G01B9/0209

CPC classification number: G01C19/721 ,  G01B9/0209 ,  G01C19/722

Abstract: A white light interferometric fiber-optic gyroscope based on a rhombic optical path difference bias structure includes a laser, a rhombic optical path difference bias structure, a fiber coil and a photodetector. The white light interferometric fiber-optic gyroscope adopts an all-fiber structure to simplify the complexity of a gyroscope system and reduce the overall cost. A white light interferometric demodulation algorithm is used to realize linear output of rotation rate signals.

公开(公告)号：US20230191718A1

公开(公告)日：2023-06-22

申请号：US18086714

申请日：2022-12-22

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Yongchen SONG ,  Zheng LING ,  Fuqiang WANG ,  Changrui SHI ,  Lu WANG ,  Jiafei ZHAO ,  Yanghui LI

IPC: B29C67/00 ,  C01B32/174 ,  C01B32/159 ,  C01B33/42 ,  C01B32/194 ,  B29C67/24

CPC classification number: B29C67/0011 ,  C01B32/174 ,  C01B32/159 ,  C01B33/42 ,  C01B32/194 ,  B29C67/24 ,  C01B2202/02 ,  C01P2006/60 ,  C01B2202/04 ,  C01B2202/06 ,  B29K2081/06

Abstract: The present disclosure provides a method for preparing a self-floating transparent nano ultrathin film. According to the present disclosure, the MXene film layer and the nano ultrathin film layer are sequentially subjected to suction filtration on the substrate material by utilizing a vacuum suction filtration technology, and thus a double-film structure is loaded on the substrate material; then an oxidant is subjected to oxidizing and bubbling on the MXene film layer in a permeation way, and thus the substrate material and the nano ultrathin film layer can be separated in a physical isolating manner. Finally, the nano ultrathin film is completely separated in a liquid phase floating separation manner. The nano ultrathin film prepared by the method provided by the present disclosure has a specific thickness and light transmittance through different loading capacities, and the substrate material can be repeatedly utilized.

公开(公告)号：US20230183407A1

公开(公告)日：2023-06-15

申请号：US17938110

申请日：2022-10-05

Applicant: Dalian University of Technology

Inventor： Shufen ZHANG ,  Changtong ZHOU ,  Wenbin NIU ,  Wei MA ,  Bingtao TANG ,  Suli WU

IPC: C08F222/10

CPC classification number: C08F222/1063

Abstract: A double-inverse opal photonic crystal resin film is formed by embedding nanospheres in pores of polyacrylate inverse opal framework material and then filling the pores of the double-inverse opal photonic crystal resin film with an ethanol solution with hydrophilic acrylamide dissolved therein followed by photopolymerization to form a polyacrylamide network, so as to obtain the double-inverse opal photonic crystal resin film using water as ink. A mass fraction of hydrophilic acrylamide in the ethanol solution is 2 to 8 wt.%. The resin film can induce water to penetrate into the pores of the double-inverse opal photonic crystal resin film, making the nanospheres in the pores of the inverse opal framework distribute from random to order under the action of buoyancy force, thereby eliminating scattering interference and producing brilliant structural colors by regulating refractive index contrast.

公开(公告)号：US20230182260A1

公开(公告)日：2023-06-15

申请号：US17780745

申请日：2021-06-30

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Siying LING ,  Ming LING ,  Honglin REN ,  Xiaoyan LI ,  Liding WANG

IPC: B24B37/02 ,  B24B37/27 ,  B23F1/02

CPC classification number: B24B37/02 ,  B23F1/02 ,  B24B37/27

Abstract: A lapping device for gear helix artifact with equal common normal by rolling method, use the rotary table to accurately control the angle between the lapping surface of whetstone and the axis of the base-circle cylinder to control the helix angle of base-circle about the involute helicoid. Use the whetstone driven component to drive the whetstone to make a high-precision linear motion in the vertical direction to adjust the position of the lapping surface of whetstone. The distance between the two lapping surface of whetstone is precisely adjusted by the gauge block to control the processing length of the three tooth common normal of the gear helix artifact. The invention provides a lapping device for gear helix artifact with equal common normal by rolling method, it conforms to the generation principle of the involute helicoid, and there is no machining principle error.

公开(公告)号：US20230169309A1

公开(公告)日：2023-06-01

申请号：US17992775

申请日：2022-11-22

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xin YANG ,  Xiaopeng WEI ,  Li ZHU ,  Xirong XU ,  Chenming DUAN

IPC: G06N3/042 ,  G06N3/0442

CPC classification number: G06N3/042 ,  G06N3/0442

Abstract: The present invention belongs to the technical field of knowledge graph, and provides a knowledge graph construction method for an ethylene oxide derivatives production process. According to data types and characteristics, data sources of the ethylene oxide derivatives production process are sorted and divided into three types: structural data, unstructured data and other types of data. An ontology layer and a data layer of a knowledge graph are constructed by combining top-down and bottom-up methods. A data-driven incremental ontology modeling method is proposed to ensure the expandability of the knowledge graph. For structural knowledge extraction, the safety of original data storage is ensured by means of virtual knowledge graph, and a new mapping mechanism is proposed to realize data materialization. For unstructured knowledge extraction, an entity extraction task is realized on the basis of a BERT-BiLSTM-CRF named entity recognition model by integrating a pre-training language model BERT.