公开(公告)号：US20240127781A1

公开(公告)日：2024-04-18

申请号：US18235756

申请日：2023-08-18

Applicant: Harbin Engineering University

Inventor： Guoyong JIN ,  Xinyu JIA ,  Tiangui YE ,  Yan YAN ,  Shuo WANG ,  Xudong PAN ,  Yang SHANGGUAN ,  Yaowei YIN

IPC: G10K11/168

CPC classification number: G10K11/168

Abstract: Provided is a pressure-resistant underwater acoustic coating structure with a mesh structure interlayer, including an outer coating, a mesh structure interlayer, an inner coating, and a metal backing; wherein the outer coating is used for inputting acoustic waves, the mesh structure interlayer and the inner coating are used for consuming acoustic wave energy, and the metal backing is used for enriching a sound absorption mode; and the outer coating, the mesh structure interlayer, the inner coating and the metal backing are attached in sequence.

公开(公告)号：US11821729B2

公开(公告)日：2023-11-21

申请号：US17013750

申请日：2020-09-07

Applicant: Harbin Engineering University

Inventor： Lin Zhao ,  Zihang Peng ,  Jicheng Ding ,  Kun Wang ,  Yaguo Bai ,  Yongchao Zhang ,  Renlong Wang

IPC: G01C21/16 ,  G01S19/47 ,  G06N3/084 ,  G06N5/046

CPC classification number: G01C21/188 ,  G01C21/165 ,  G01S19/47 ,  G06N3/084 ,  G06N5/046

Abstract: A tight-integrated navigation method assisted by Elman neural network when GNSS signals are blocked based on the tight-integrated navigation system model of the INS and GNSS, where the dynamic Elman neural network prediction model is used to train the inertial navigation error model and the GNSS compensation model, so as to solve the problem of tight-integrated navigation when the GNSS signals are blocked. When the GNSS signals are blocked, the trained neural network is used to predict the output error of GNSS and compensate the output of inertial navigation, so that the error will not diverge sharply, and the system can continue to work in the integrated navigation mode. The low-cost tight-integrated navigation module is used, and the collected information is preprocessed to form the sample data for training the neural network to train the Elman neural network model.

公开(公告)号：US20230338901A1

公开(公告)日：2023-10-26

申请号：US18124024

申请日：2023-03-21

Applicant: Harbin Engineering University

Inventor： Jun WANG ,  Jiaqi YU ,  Qi LIU ,  Hongsen ZHANG ,  Jingyuan LIU ,  Rongrong CHEN ,  Jing YU ,  Jiahui ZHU ,  Rumin LI ,  Peili LIU

IPC: B01D67/00 ,  B01D69/02 ,  B01D71/42 ,  C02F1/44 ,  C02F1/50

CPC classification number: B01D67/0079 ,  B01D69/02 ,  B01D71/42 ,  C02F1/44 ,  C02F1/50 ,  B01D2323/02 ,  B01D2325/36 ,  C02F2103/08

Abstract: A high flux antibacterial polyacrylonitrile-based uranium-extraction-from-seawater-seawater desalination cogeneration membrane and a preparation method thereof are disclosed. To satisfy demand of uranium-extraction-from-seawater-seawater desalination cogeneration application, polyacrylonitrile, chitosan and amidoxime modified polyacrylonitrile are taken as raw materials and a proportion of raw materials of a casting membrane are optimized in a membrane forming process. The conversion rate of polyacrylonitrile is adjusted so that formation of an amidoxime modified polyacrylonitrile powder in a casting membrane liquid mixing system is regulated and controlled, thereby significantly improving the mechanical properties, the flux, the hydrophilicity, the antibacterial property and the uranium adsorptive property. A compound cogeneration membrane composed of a top membrane, a clipping membrane and a bottom membrane are also prepared according to actual function characteristics of seawater and the membrane material, and the uranium-extraction-from-seawater-seawater desalination performance of the membrane material is integrally improved.

公开(公告)号：US20230274848A1

公开(公告)日：2023-08-31

申请号：US17825949

申请日：2022-05-26

Applicant: Harbin Engineering University

Inventor： Genglei XIA ,  Minjun PENG ,  Shouyu CHENG ,  Qiang ZHAO ,  Xue DU ,  Hang WANG ,  Yuandong ZHANG ,  Chenyang WANG

IPC: G21C7/36

CPC classification number: G21C7/36

Abstract: Disclosed is a reactor operation optimization method based on an improved multi-population genetic algorithm. The reactor operation optimization method includes the following steps: defining an operating condition, and designing an operating scheme according to the operating condition; obtaining operating data of the reactor system of the operating scheme through numerical simulation research, and obtaining operation indexes by calculating the operating data; optimizing the operation indexes based on an improved multi-population genetic algorithm to obtain an optimization result; obtaining an optimal operating parameter setting under the operating condition according to the optimization result. The application solves the problem that the design scheme of reactor operation control hardly meets actual operation requirements, and therefore improves operation characteristics of the reactor system.

公开(公告)号：US20230265818A1

公开(公告)日：2023-08-24

申请号：US17958910

申请日：2022-10-03

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Jianhui ZHAO ,  Jingyan CHEN ,  Heng ZHANG ,  Shuo CHEN

IPC: F02M55/04 ,  F02M63/02 ,  F02M61/10

CPC classification number: F02M55/04 ,  F02M63/0275 ,  F02M61/10 ,  F02M2200/315 ,  F02M2200/40 ,  F02M2200/28

Abstract: The present disclosure provides a high-pressure common rail fuel injector capable of achieving highly stable injection based on the throttling damping-accommodating effect in the present disclosure, comprising a fuel injector housing, a fuel pipe connector, an accumulator chamber, a fuel chamber control valve, a pressure fluctuation absorption assembly, a control valve assembly and a nozzle assembly; the accumulator chamber is installed in the fuel injector housing, and the fuel pipe connector is installed above the accumulator chamber; the fuel chamber control valve, the pressure fluctuation absorption assembly and the control valve assembly are installed in the fuel injector housing, and the nozzle assembly is arranged below the control valve assembly; and the accumulator chamber is separated into a main accumulator chamber, an auxiliary accumulator chamber and a fuel-return accumulator chamber.

公开(公告)号：US11686851B2

公开(公告)日：2023-06-27

申请号：US17013743

申请日：2020-09-07

Applicant: Harbin Engineering University

Inventor： Liang Li ,  Ruijie Li ,  Jiaxiang Li ,  Jiachang Jiang ,  Chun Jia ,  Hui Li ,  Yang Li ,  Zhibo Na

IPC: G01S19/08 ,  G01S19/07 ,  G01S19/43

CPC classification number: G01S19/08 ,  G01S19/072 ,  G01S19/43

Abstract: The present disclosure provides an integrity monitoring method of ionosphere gradient based on kinematical to kinematical platform, comprising step 1, constructing geometry-free and ionospheric amplification type detection statistics, based on original triple-frequency carrier phase observations, step 2, adjusting a detection threshold based on a required monitoring false alarm rate, and determining whether the detection statistics are less than the adjusted detection threshold, step 3, comparing a calculated miss-detection rate and a required miss-detection rate, and determining whether the calculated miss-detection rate are less than the required miss-detection rate, and step 4, if the detection statistics are less than the adjusted detection threshold and the calculated miss-detection rate are less than the required miss-detection rate, considering the ionosphere gradient is normal.

公开(公告)号：US20230113870A1

公开(公告)日：2023-04-13

申请号：US17659581

申请日：2022-04-18

Applicant: Harbin Engineering University

Inventor： Jie Guo ,  Shengwei Zhou ,  Guoan Jiang ,  Xinyu Zhang

IPC: G01L1/16 ,  F16K37/00

Abstract: Disclosed are a sensor for measuring seating force of an engine intake and exhaust valve and a measuring method. The sensor comprises a mounting boss, a force bearing element, a piezoelectric element, an annular thin-wall shell and an annular diaphragm with a T-shaped section. Meanwhile, the present disclosure also provides a measuring method by using the sensor. The sensor is simple in mechanism and convenient to use, has certain universality, and can realize the measurement of the impact load of the engine intake and exhaust valve.

公开(公告)号：US20230110677A1

公开(公告)日：2023-04-13

申请号：US17659582

申请日：2022-04-18

Applicant: Harbin Engineering University

Inventor： Jie Guo ,  Shengwei Zhou ,  Guoan Jiang ,  Xinyu Zhang

IPC: G01L1/16 ,  F01L1/14

Abstract: The present disclosure provides a sensor for measuring cam and tappet contact force of an engine and a measuring method. The sensor comprises a force carrying element, a force transmission element, a piezoelectric element, a force bearing element, a tappet head and a guide woodruff key. Meanwhile, the present disclosure also provides a measuring method by using the sensor. The sensor is simple in mechanism and convenient to use and can realize the measurement of the cam tappet contact force in the normal direction, the tangential direction and the axial direction of the contact surface.

公开(公告)号：US11624419B2

公开(公告)日：2023-04-11

申请号：US17237106

申请日：2021-04-22

Applicant: Harbin Engineering University

Inventor： Guoyong Jin ,  Junjie Yuan ,  Tiangui Ye ,  Zhigang Liu

IPC: F16F15/03 ,  F16F15/02

Abstract: The disclosure provides a magnetic suspension type quasi-zero stiffness electromagnetic vibration isolator with active negative stiffness. The disclosure relates to the technical field of vibration control. The disclosure can selectively realize passive negative stiffness and active negative stiffness by adjusting the control mode of a controller. By adopting an amplifying mechanism and DIESOLE type electromagnets, the bearing capacity of the vibration isolator is further increased, and the disclosure is suitable for the field of ultra-low frequency heavy load vibration reduction and isolation. The displacement state of a negative stiffness mechanism can be measured in real time according to a sensor, and by means of cooperation of the controller and a driver, active negative stiffness is realized, real-time linear negative stiffness is realized, the multi-stable phenomenon is avoided, and complex dynamic phenomena such as jumping during working of the vibration isolator are prevented. The active negative stiffness is realized, the current passing through the system can be adjusted according to different working conditions, and the system has strong self-adaptive ability, can be applied to vibration-isolated objects of different quality, and can adapt to different working environments.

公开(公告)号：US20220392426A1

公开(公告)日：2022-12-08

申请号：US17564822

申请日：2021-12-29

Applicant: Harbin Engineering University

Inventor： Guoyong Jin ,  Shanjun Li ,  Tiangui Ye

IPC: G10K11/178

Abstract: An active control method for filtered reference affine projection sign algorithm based on variable step size includes: S1, acquiring impulse noise signals and transmitting the signals to control filters; S2, transmitting the impulse noise signals by the control filters to post filters; S3, generating cancellation signals of the impulse noise signals by the post filters according to the impulse noise signals and internal active control algorithms, and transmitting the cancellation signals to a speaker; S4, sending out the cancellation signal by the speaker to superimpose with the impulse noise signals to cancel the impulse noise signal. A convex combination structure and a variable step size strategy are adopted, and by adjusting step size coefficients in the control filter structure, convergence speed of algorithm is controlled, contradiction between convergence speed and steady-state error is coordinated, convergence performance of control algorithm to impulse noises is improved, and impulse noises are effectively controlled.