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    GNSS and INS integrated navigation positioning method and system thereof
    11.
    发明授权
    GNSS and INS integrated navigation positioning method and system thereof 有权

    公开(公告)号：US12019170B1

    公开(公告)日：2024-06-25

    申请号：US18496789

    申请日：2023-10-27

    Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Ying Xu ,  Kun Wang ,  Jinjie Sun ,  Yuqing Feng

    IPC: G01S19/39 ,  G01S19/40 ,  G01S19/49 ,  G01S19/52

    CPC classification number: G01S19/393 ,  G01S19/40 ,  G01S19/49 ,  G01S19/52

    Abstract: The present disclosure relates to the field of GNSS and INS integrated navigation technology, and specifically discloses a GNSS and INS integrated navigation positioning method and a system thereof. To addresses the technical problem of positioning error divergence in integrated navigation systems caused by insufficient satellite visibility or strong multipath effects in GNSS denial environments, a method combining motion constraint algorithm and neural network algorithm is proposed for robustness by the present disclosure. The motion constraint algorithm is very stable, but it cannot self-adaptively adjust the constraint threshold based on the vehicle motion state. The neural network algorithm has strong flexibility, but the obtained predicted values inevitably have outliers. The present disclosure combines motion constraints with the neural network algorithms, enabling these two algorithms to complement advantages of each other, thereby effectively improving the positioning accuracy and reliability of the integrated navigation system after GNSS losing lock.

    Vaneless contra-rotating compressor with multiple contra-rotating interfaces
    13.
    发明授权
    Vaneless contra-rotating compressor with multiple contra-rotating interfaces 有权

    公开(公告)号：US12012966B2

    公开(公告)日：2024-06-18

    申请号：US18065359

    申请日：2022-12-13

    Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Weiwei Cui ,  Kai Zhang ,  Fei Yao ,  Xinglu Wang ,  Cuiping Wang ,  Laishun Yang

    IPC: F04D19/02 ,  F04D29/32

    CPC classification number: F04D19/024 ,  F04D29/324

    Abstract: A vaneless contra-rotating compressor with multiple contra-rotating interfaces and application of the vaneless contra-rotating compressor is provided, which includes at least two vaneless contra-rotating interfaces. For each of the at least two contra-rotating interfaces, the contra-rotating interface corresponds to two of vaneless contra-rotating rotors. A rotating direction of an upstream rotor of the two vaneless contra-rotating rotors and a rotating direction of a downstream rotor of the two vaneless contra-rotating rotors are opposite. Rectifier stator vanes are not provided among all the rotors to supply sufficient inlet negative pre-swirl for the downstream rotors through the upstream rotors. Only the outlet guide vanes of the last stage, of the vaneless contra-rotating rotors are provided. The number of stages and the number of vaneless contra-rotating interfaces may be set flexibly according to the actual pressurization requirements.

    VOLLEYBALL PASSING TRAINING DEVICE
    14.
    发明公开
    VOLLEYBALL PASSING TRAINING DEVICE 审中-公开

    公开(公告)号：US20240157216A1

    公开(公告)日：2024-05-16

    申请号：US18094637

    申请日：2023-01-09

    Applicant: Shandong University of Science and Technology

    Inventor： Zheng Chang ,  Dianguo WANG ,  Yanpeng ZHAO ,  Yuanming ZHU

    IPC: A63B69/00 ,  A63B47/02

    CPC classification number: A63B69/0095 ,  A63B47/02 ,  A63B2225/093

    Abstract: The present disclosure discloses a volleyball passing training device, which includes an angle adjustment mechanism and a ball hoop arranged on the angle adjustment mechanism. The angle adjustment mechanism includes a connecting piece connected to the ball hoop, and a first connecting rod and a second connecting rod respectively hinged to the connecting piece. A sliding device which can slide or fix on the second connecting rod is arranged on the second connecting rod. The first connecting rod is hinged to the sliding device. Connecting lines of the hinge points between the first connecting rod and the connecting piece and between the second connecting rod and the connecting piece and the hinge point between the first connecting rod and the sliding device form a triangle.

    Automatic stable posture seabed base and releasing method
    15.
    发明授权
    Automatic stable posture seabed base and releasing method 有权

    公开(公告)号：US11975808B2

    公开(公告)日：2024-05-07

    申请号：US18124062

    申请日：2023-03-21

    Applicant: College of Ocean Science and Engineering, Shandong University of Science and Technology

    Inventor： Yong Liu ,  Yongzhi Wang ,  Honghua Shi ,  Weimin Zheng

    IPC: B63C11/52 ,  G01C13/00

    CPC classification number: B63C11/52 ,  G01C13/00

    Abstract: Disclosed are an automatic stable posture seabed base and a releasing method, belonging to the technical field of ocean observation. The automatic stable posture seabed base includes an accommodating body with an inner cavity for accommodating the first observation device and a seawater, and the accommodating body has first through holes for the seawater to enter and outflow the inner cavity; plugging members blocked at the first through holes to close or semi-close the first through holes; and a buoyancy body installed at a transducer of the first observation device, and a buoyancy of the buoyancy body is larger than a mass of the first observation device, so that the first observation device may float in the cover body after the cover body is filled with water, and a posture of the transducer in the cover body always keeps vertically to the sea surface.

    CROSS-DOMAIN MECHANICAL FAULT DIAGNOSIS METHOD BASED ON MULTI-CHANNEL FEATURE FUSION OF CBAM AND USE THEREOF
    16.
    发明公开
    CROSS-DOMAIN MECHANICAL FAULT DIAGNOSIS METHOD BASED ON MULTI-CHANNEL FEATURE FUSION OF CBAM AND USE THEREOF 审中-公开

    公开(公告)号：US20240142342A1

    公开(公告)日：2024-05-02

    申请号：US18494396

    申请日：2023-10-25

    Applicant: Shandong University of Science and Technology

    Inventor： Huaiqian BAO ,  Jinrui WANG ,  Zongzhen ZHANG ,  Baokun HAN ,  Shuo XING

    IPC: G01M13/045 ,  G01M13/028 ,  G06F18/25

    CPC classification number: G01M13/045 ,  G01M13/028 ,  G06F18/253

    Abstract: The present invention belongs to the technical field of mechanical fault data recognition, and discloses a cross-domain mechanical fault diagnosis method based on multi-channel feature fusion of an improved CBAM and use thereof, wherein the method comprises: conducting preliminary feature extraction in a grey-scale graph formed by original signals with convolutional neural network, obtaining high-level features, and compressing the high-level features with a full-connection layer module; conducting deep-level multi-sensor feature extraction with an improved convolutional block attention module (CBAM); conducting fusion for multi-sensor features extracted with an improved convolutional block attention module and obtaining multi-sensor fusion features; and inputting the multi-sensor fusion features into a tag assignor for fault diagnosis results. In the present invention, the latest multi-channel domain adaptation fault diagnosis method is used to realize efficiently intelligent fault diagnosis tasks of bearings in different working states.

    GROUTING AND WATER-PLUGGING DEVICE FOR FRACTURED ROCK IN MINE COUPLING STATE, AND TEST METHOD
    18.
    发明公开
    GROUTING AND WATER-PLUGGING DEVICE FOR FRACTURED ROCK IN MINE COUPLING STATE, AND TEST METHOD 审中-公开

    公开(公告)号：US20240085290A1

    公开(公告)日：2024-03-14

    申请号：US18554576

    申请日：2022-06-08

    Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Weitao LIU ,  Haifeng WU ,  Xiangxi MENG ,  Yanhui DU ,  Lifu PANG ,  Mengke HAN ,  Jiyuan ZHAO

    IPC: G01N3/12 ,  G01N33/24

    CPC classification number: G01N3/12 ,  G01N33/24

    Abstract: The present disclosure provides a grouting and water-plugging device for a fractured rock in a mine coupling state and a test method, and relates to the technical field of rock mechanics testing. The device includes a pressurizer, a reservoir, a test box, and a grouting pump. The reservoir includes a temperature sensor and a pressing-water plate. The pressing-water plate is connected to the pressurizer through a pressurizing rod. A pressure measuring pipe and a drainage pipe are installed on an outer side of the reservoir. The reservoir is connected to a water pump through a water injection pipe. The test box includes a rock, a transverse force exerting plate, a longitudinal force exerting plate, a stress sensor and the temperature sensor. The longitudinal force exerting plate is provided with multiple water through holes. A sliding box door is hinged to a front wall of the test box. The pressure measuring pipe and the drainage pipe are installed on a rear wall of the test box. The rear wall of the test box is connected to the grouting pump through a grouting pipe. A water pressure gauge is installed on the grouting pipe. Valves are installed on the grouting pipe, the pressure measuring pipe, the water injection pipe, and the drainage pipe. The device can be used to conduct a test, simulating coupling conditions of stress-temperature-water pressure in a mine, for a rock, and to verify the effectiveness of water plugging.

    Grouting and water-plugging device for fractured rock in mine coupling state, and test method
    19.
    发明授权
    Grouting and water-plugging device for fractured rock in mine coupling state, and test method 有权

    公开(公告)号：US11906481B1

    公开(公告)日：2024-02-20

    申请号：US18554576

    申请日：2022-06-08

    Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Weitao Liu ,  Haifeng Wu ,  Xiangxi Meng ,  Yanhui Du ,  Lifu Pang ,  Mengke Han ,  Jiyuan Zhao

    IPC: G01N3/12 ,  G01N33/24

    CPC classification number: G01N3/12 ,  G01N33/24

    Abstract: The present disclosure provides a grouting and water-plugging device for a fractured rock in a mine coupling state and a test method, and relates to the technical field of rock mechanics testing. The device includes a pressurizer, a reservoir, a test box, and a grouting pump. The reservoir includes a temperature sensor and a pressing-water plate. The pressing-water plate is connected to the pressurizer through a pressurizing rod. A pressure measuring pipe and a drainage pipe are installed on an outer side of the reservoir. The reservoir is connected to a water pump through a water injection pipe. The test box includes a rock, a transverse force exerting plate, a longitudinal force exerting plate, a stress sensor and the temperature sensor. The longitudinal force exerting plate is provided with multiple water through holes. A sliding box door is hinged to a front wall of the test box. The pressure measuring pipe and the drainage pipe are installed on a rear wall of the test box. The rear wall of the test box is connected to the grouting pump through a grouting pipe. A water pressure gauge is installed on the grouting pipe. Valves are installed on the grouting pipe, the pressure measuring pipe, the water injection pipe, and the drainage pipe. The device can be used to conduct a test, simulating coupling conditions of stress-temperature-water pressure in a mine, for a rock, and to verify the effectiveness of water plugging.

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