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    DETERMINATION METHOD FOR PREFERRED HABITAT OF FISH AND TERMINAL DEVICE
    2.
    发明申请
    DETERMINATION METHOD FOR PREFERRED HABITAT OF FISH AND TERMINAL DEVICE 有权

    公开(公告)号：US20230102365A1

    公开(公告)日：2023-03-30

    申请号：US17750027

    申请日：2022-05-20

    Applicant: XI'AN UNIVERSITY OF TECHNOLOGY

    Inventor： Quan QUAN ,  Shaoze GAO ,  Simin YANG ,  Rong FAN

    IPC: A01K63/00 ,  G06F30/10 ,  G06F30/20

    Abstract: The present invention discloses a determination method for a preferred habitat of fish and a terminal device, wherein the method comprises: acquiring parameter information of a water environment in which target fish is located, and establishing a 3D water environment model by utilizing the parameter information of the water environment; determining an ecological function of the target fish and constructing a bio-simulation model on the 3D water environment model by combining the ecological function; acquiring a movement locus of the target fish in the bio-simulation model and determining potential habitats of the target fish according to the movement locus; and determining the preferred habitat of the target fish from the potential habitats by utilizing a preference learning model based on a density accumulation method.

    Chaotic shape-forming and matched filter-based wireless communication method
    3.
    发明申请
    Chaotic shape-forming and matched filter-based wireless communication method 有权

    公开(公告)号：US20210336821A1

    公开(公告)日：2021-10-28

    申请号：US16476879

    申请日：2019-04-28

    Applicant: Xi'an University of Technology

    Inventor： Haipeng REN ,  Junliang YAO ,  Chao BAI

    IPC: H04L27/00

    Abstract: a chaotic shape-forming and corresponding matched filter-based wireless communication method is provided, and the method includes that: 1) data to be transmitted is prepared; 2) chaotic shape-forming filter is performed on a digital symbol to be transmitted to generate a baseband signal; 3) the baseband signal is transmitted and transferred by use of a radio frequency component and transmitting antenna of a conventional wireless communication system; 4) a wireless signal is received by use of a conventional receiving antenna, and down-carrier process is performed on the received signal to obtain a received baseband signal; 5) matched filter is performed on the received baseband signal; 6) wireless channel estimation and multipath interference cancellation judgment threshold calculation are performed; and 7) sampling judgment is performed on an output signal of matched filter, symbol sampling is performed on the output signal of the matched filter in Step 5), and the sampled signal is judged by use of a judgment threshold calculated in Step 6) to obtain a decoded output signal.

    ECOLOGICAL FLOW DETERMINATION METHOD FOR CONSIDERING LIFTING AMOUNT
    4.
    发明申请
    ECOLOGICAL FLOW DETERMINATION METHOD FOR CONSIDERING LIFTING AMOUNT 有权

    公开(公告)号：US20210326408A1

    公开(公告)日：2021-10-21

    申请号：US17361327

    申请日：2021-06-29

    Applicant: Xi'an University of Technology

    Inventor： Jungang Luo ,  Dandan Liu

    IPC: G06F17/18 ,  E02B1/00 ,  G01C13/00

    Abstract: An ecological flow determination method for considering a lifting amount a belongs to a technical field of environmental engineering and includes the following steps: collecting, by a collecting device, data needed to calculate an ecological flow; determining, by a calculating device, an ecological base flow; selecting an upper limit and a lower limit of the ecological base flow so as to determine a range of the ecological base flow; verifying the lower limit of the ecological base flow; calculating water demands of landscape wetland, sediment discharge and dilution self purification of three service objects; comparing the water demands of the three service objects so as to determine the lifting amount, and finding out a minimum value and a maximum value to determine a lower limit and an upper limit of the lifting amount in the range; combining the ecological base flow and the lifting amount to determine the ecological flow.

    Self-lubricating rolling bearing and preparation method therefor
    5.
    发明授权
    Self-lubricating rolling bearing and preparation method therefor 有权

    公开(公告)号：US11085097B2

    公开(公告)日：2021-08-10

    申请号：US16327884

    申请日：2017-08-31

    Applicant: Xi'an University of Technology

    Inventor： Yang Xu ,  Guojun Yan ,  Baojian Liu

    IPC: C21D9/40 ,  C21D1/32 ,  C22C37/06 ,  C22C37/10 ,  C22C37/08 ,  F16C33/66 ,  B22D11/14 ,  C21D1/20 ,  C22C33/08 ,  C22C37/04

    Abstract: A self-lubricating rolling bearing is provided. The chemical compositions in the inner rings and the outer rings of bearing are 3.4-3.7% C, 2.7-2.9% Si, 0.3-0.5% Mn, 0.3-0.5% Cr, ≤0.05% S, ≤0.05% P, 0.03-0.045% Residual Mg, and the remainder Fe. The total percent of the chemical compositions is 100%. The material for the inner and outer rings of the rolling bearing introduced in the invention is austempered ductile iron (ADI). In the microstructure of ADI, the diameter of the graphite nodules is less than 0.02 mm, the number of graphite spheres per square millimeter is more than 400, and the microstructure of the metal matrix in the ADI can be showed clearly only when it is observed on the microscope with a magnification more than 500. Eventually, the self-lubricating rolling bearings are made from the ADI.

    Carbon nanotubes and preparation method thereof by using PET
    6.
    发明授权
    Carbon nanotubes and preparation method thereof by using PET 有权

    公开(公告)号：US10947118B2

    公开(公告)日：2021-03-16

    申请号：US15957011

    申请日：2018-04-19

    Applicant: Xi'an University of Technology

    Inventor： Changqing Fang ,  Xing Zhou ,  Rong Yang ,  Shaofei Pan ,  Wanqing Lei ,  Yan Li

    IPC: C01B32/16

    Abstract: The present invention relates to carbon nanotubes and a preparation method thereof by using PET. The carbon nanotubes of the present invention are prepared by processes of alcoholysis of PET materials, processes of washing, crushing and calcining unreacted intermediates and so on. By the preparation method of the present invention, multi-walled carbon nanotubes prepared by using waste PET have a good conductivity, and are a structure of top-down array with low aspect ratio. The method of the present invention is not only easy to implement, but also does not need a catalyst, and turns the waste PET into treasure, which solves the problem of environmental pollution caused by the increasingly serious waste PET. FIG. 9.

    Optimization method for bending rebound quantity of aluminum roll forming
    7.
    发明授权
    Optimization method for bending rebound quantity of aluminum roll forming 有权

    公开(公告)号：US12280410B1

    公开(公告)日：2025-04-22

    申请号：US18945585

    申请日：2024-11-13

    Applicant: XI'AN HEAVY EQUIPMENT & TECHNOLOGY CO., LTD. ,  Xi'an University of Technology

    Inventor： Xiaohui Zhao ,  Yali Wu ,  Dahao Wang ,  Bo Yang ,  Feng Ding ,  Jianfeng Chen ,  Zuohua Chai

    IPC: B21B37/16 ,  B21B3/00

    Abstract: An optimization method for bending rebound quantity of aluminum roll forming includes the following steps: S1, analyzing the process of aluminum roll forming, and determining decision variables of aluminum rebound quantity and thickness reduction; S2, constructing the optimization model of the bending rebound quantity of aluminum roll forming based on the multi-objective optimization algorithm and clarifying constraints in the process of aluminum roll forming; S3, based on characteristics of the model in S2, proposing the corresponding algorithm to optimize the aluminum rebound quantity and thickness reduction; S4, updating the decision variables that affect the aluminum rebound quantity and thickness reduction; S5, judging the iteration stop condition, and outputting the scheme that improves the bending rebound quantity of roll forming aluminum. The optimization method solves the problem of large bending rebound quantity in roll forming technology, improves the accuracy of roll forming process and production efficiency, and enhances production flexibility.

    Ecological flow determination method for considering lifting amount
    8.
    发明授权
    Ecological flow determination method for considering lifting amount 有权

    公开(公告)号：US12210584B2

    公开(公告)日：2025-01-28

    申请号：US17361327

    申请日：2021-06-29

    Applicant: Xi'an University of Technology

    Inventor： Jungang Luo ,  Dandan Liu

    IPC: G06F17/18 ,  E02B1/00 ,  G01C13/00

    Abstract: An ecological flow determination method for considering a lifting amount a belongs to a technical field of environmental engineering and includes the following steps: collecting, by a collecting device, data needed to calculate an ecological flow; determining, by a calculating device, an ecological base flow; selecting an upper limit and a lower limit of the ecological base flow so as to determine a range of the ecological base flow; verifying the lower limit of the ecological base flow; calculating water demands of landscape wetland, sediment discharge and dilution self purification of three service objects; comparing the water demands of the three service objects so as to determine the lifting amount, and finding out a minimum value and a maximum value to determine a lower limit and an upper limit of the lifting amount in the range; combining the ecological base flow and the lifting amount to determine the ecological flow.

    Variable-size fully-automatic 3D printing system based on cylindrical coordinate system
    9.
    发明授权
    Variable-size fully-automatic 3D printing system based on cylindrical coordinate system 有权

    公开(公告)号：US11298877B2

    公开(公告)日：2022-04-12

    申请号：US16669602

    申请日：2019-10-31

    Applicant: Xi'an University of Technology

    Inventor： Gengxiang Wang ,  Pengfei Li ,  Kaihe Wei

    IPC: B29C64/245 ,  B29C64/209 ,  B29C64/227 ,  B33Y30/00

    Abstract: A variable-size fully-automatic 3D printing system based on a cylindrical coordinate system includes a base provided with a retractable work platform; the base is provided with a vertical support side plate on a side thereof; an upper end of the support side plate is connected to a top plate, and the top plate is located directly above the base; a lower side of the top plate is connected to a sleeve via a column seat; a lower end of the sleeve is provided with a protrusion; a lower end of the protrusion is connected with a cross beam; a lower side of the cross beam is provided with a ball screw a, one end of the ball screw a is connected to a power end of a first servo motor disposed at an outer end of the cross beam.

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