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41.发明申请公开(公告)号：US20200248518A1
公开(公告)日：2020-08-06
申请号：US16833584
申请日：2020-03-28
Applicant: Hunan University of Science and Technology
Inventor： Buyan WAN , Xiaojun HUANG , Yongping JIN
Abstract: The present disclosure discloses a pressure-retaining cap screwing and unscrewing device for a marine natural gas hydrate pressure-retaining rock-core barrel, wherein it comprises a cap-unscrewing chuck, a support cylinder, a pressure-retaining cap screwing and unscrewing head, a spring, a screwing and unscrewing shaft, and a pressure-retaining cap screwing and unscrewing sleeve, a reducer and a motor; an input shaft of the reducer is connected to the motor, an output shaft of the reducer is the screwing and unscrewing shaft which is a tubular structure with a plurality of guide holes provided on a side wall thereof. The device is simple in structure, compact, light in weight, and convenient to control, and the pressure-retaining cap can be discarded.
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公开(公告)号：US20250044803A1
公开(公告)日：2025-02-06
申请号：US18599605
申请日：2024-03-08
Applicant: Hunan University of Science and Technology
Inventor： Chaoyang CHEN , Zongyao LI , Pei LI , Juan CHEN , Zuguo CHEN , Ying ZOU , Ming LU , Zunhui YI , Lei HE , Liang CHEN
IPC: G05D1/24 , B63G8/00 , B63G8/39 , G01S15/58 , G05D109/30 , G05D111/20
Abstract: The disclosure provides a communication delay compensation method and a communication delay compensation system based on an autonomous robot, where the method includes the following steps: establishing a state equation based on a system model of an AUV positioning system; acquiring an included angle between a direction vector of AUV to an observation station and a velocity vector of AUV based on the system model; establishing an observation equation according to the state equation and the included angle; establishing an extended Kalman filter equation based on the system model, the included angle and the observation equation; and calculating a position information predicted value at the current time by using the extended Kalman filter equation to complete communication delay compensation.
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公开(公告)号：US11983472B2
公开(公告)日：2024-05-14
申请号：US18191149
申请日：2023-03-28
Applicant: Hunan University of Science and Technology
Inventor： Chaoyang Chen , Yong Zhou , Zuguo Chen , Li He , Zhuangxi Tan , Pei Li , Ying Zou , Xiaowen Wu
IPC: G06F30/20 , G06F113/04 , G06F119/02 , H02J3/00
CPC classification number: G06F30/20 , H02J3/00125 , G06F2113/04 , G06F2119/02 , H02J2203/20
Abstract: Disclosed is a method for identifying fragile lines in power grid based on electrical betweenness, which comprises the following steps: constructing the power grid into a network diagram, sequentially removing lines in the network diagram, and sorting the electrical betweenness of each line from large to small; constructing a nonlinear model of complex network cascade failure considering overload and weighted edges, and respectively performing two ways of removing lines for sorted electrical betweenness, namely sequentially removing preset proportion lines and sequentially removing all lines until no new lines are removed in the network diagram; obtaining a change of generator-load power before and after each line removal, and evaluating a severity of power grid failure based on the change of generator-load power, thus completing an identification of power grid fragile lines.
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公开(公告)号：US20230399910A1
公开(公告)日：2023-12-14
申请号：US18457150
申请日：2023-08-28
Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Yongping JIN , Zhaodong TONG , Youduo PENG
Abstract: A drilling and sampling device applied to a seafloor tracked vehicle, including a slide seat, a positioning electromagnet, a pipe-replacing cylinder, a dial claw, a plurality of clamping assemblies, a plurality of sampling drill pipes, a drill pipe rack, a frame, a thrust cylinder, a pipe-releasing assembly, a guide rod, a drive pipe, a power head, and a pipe-replacing disc. The guide rod and the thrust cylinder are fixedly arranged on the frame. The slide seat is in clearance fit with the guide rod. A piston rod end of the thrust cylinder is hingedly connected to the slide seat. The power head is fixedly arranged on the slide seat. The drive pipe is arranged at an output end of the power head, and is coaxially screwed with the plurality of sampling drill pipes. The dial claw is slidably arranged in the arc guide groove.
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45.发明公开公开(公告)号：US20230273104A1
公开(公告)日：2023-08-31
申请号：US18314635
申请日：2023-05-09
Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Yongping JIN , Fenfei PENG , Deshun LIU
CPC classification number: G01N3/307 , G01N3/066 , G01N2203/0067 , G01N2203/0044 , G01N2203/001
Abstract: A pre-tension and tensile impact test apparatus capable of simulating a full-sea-depth environment includes a pre-tensioning device, a Hopkinson bar device, a seawater pressure simulation device, a power source group and an acquisition control unit. The Hopkinson bar device includes an input rod, an air compressing device, a test sample and an output rod. The pre-tensioning device, the input rod, the air compressing device, the seawater pressure simulation device, the test sample and the output rod are successively arranged on the same axis. The air compressing device includes an air cylinder, an end cover and an impact piston. Two ends of the air cylinder are each provided with the end cover. The impact piston and the air cylinder are in clearance fit. The input rod is coaxially connected to the impact piston. Two ends of the input rod each extend out of the end cover.
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Patent Agency Ranking
46.发明公开公开(公告)号：US20230273097A1
公开(公告)日：2023-08-31
申请号：US18314730
申请日：2023-05-09
Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Yongping JIN , Guangping LIU , Youduo PENG , Wenbo TANG , Ping LIU
IPC: G01N1/04
CPC classification number: G01N1/04
Abstract: A full-sea depth multi-point in-situ sampler includes a sampling assembly, a pressure-retaining assembly, a pressure-compensating assembly, and a cleaning assembly. The sampling assembly includes a handle, an extrusion valve, a needle valve core, a two-stage piston, a sampling tube, and a capturing device. The pressure-retaining assembly includes a pressure-retaining cylinder, a locking mechanism, a floating valve core, a support spring, and a drainage device. The pressure-compensating assembly includes a pressure-compensating cylinder, a piston, and an end cap. The cleaning assembly includes a cleaning sleeve, a cleaning cylinder, and multiple trigger mechanisms. A sampling and transfer method based on the sampler is also provided.
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公开(公告)号：US20220255409A1
公开(公告)日：2022-08-11
申请号：US17168789
申请日：2021-02-05
Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Xiaoping ZHANG , Yuxuan GUO , Zhu ZHANG , Guanghui ZHU , Haipeng JIANG , Hongwei CHEN
Abstract: Provided is a noise reduction method by cutting a corner of a tooth shoulder of a stator of an AC traction motor based on an inscribed arc. Taking a vertex of a corner of the tooth shoulder of the stator as an end point, two points are selected along two sides of the corner of the tooth shoulder of the stator to allow distances from the two points to the end point to be equal. The two points are determined as tangent points D1 and D2 of the inscribed arc. The tangent points D1 and D2 define the inscribed arc along which the corner of the tooth shoulder is cut off.
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公开(公告)号：US11408227B2
公开(公告)日：2022-08-09
申请号：US17485739
申请日：2021-09-27
Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Buyan Wan , Yongping Jin , Fenfei Peng , Jialiang Wang , Huan Liu
Abstract: A horizontal drilling machine with an impact device, including a support frame, an armored cable, a cable-straightening mechanism, a cable-feeding mechanism, a power head, a drill pipe, a rotating chuck, a damper, a fishing device with the impact device, a core tube and a thrust cylinder. One end of the thrust cylinder is hinged with the support frame, and the other end of the thrust cylinder is connected to the power head. The power head is arranged on a slid rail of the support frame. An active drill pipe of the power head is connected to the drill pipe. An end of the armored cable is connected to a control system, and the other end is connected to the fishing device in the drill pipe. A fishing head of the fishing device is connected to a spearhead of the core tube.
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公开(公告)号：US20220187488A1
公开(公告)日：2022-06-16
申请号：US17687192
申请日：2022-03-04
Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Guohong FU , Hui CHENG , Songyuan FU , Xiangqin ZHONG
Abstract: An electrical prospecting signal transmission device capable of suppressing electromagnetic coupling interference, including a rectangular wave signal source, an output circuit for supplying power to the ground and a plurality of transmission channels. Each of the plurality of transmission channels includes an isolated driving circuit, a low-pass filter circuit and a power amplification circuit connected sequentially in series. The rectangular wave signal source is configured to generate a rectangular wave or a composite rectangular wave. A signal output terminal of the rectangular wave signal source is connected to an input terminal of the isolated driving circuit, and an output terminal of the power amplification circuit is connected to the output circuit to supply power to the ground.
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公开(公告)号：US20220010624A1
公开(公告)日：2022-01-13
申请号：US17485712
申请日：2021-09-27
Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Buyan WAN , Yongping JIN , Fenfei PENG , Jialiang WANG , Huan LIU
Abstract: A horizontal drilling machine with an in-situ detection device, including a support frame, an armored cable, a steel pipe-straightening mechanism, a steel pipe-feeding mechanism, a motor, a power head, a drill pipe, a rotating chuck, a damper, a non-core drilling tool, the in-situ detection device, a fishing device and a thrust cylinder. The steel pipe-straightening mechanism, the steel pipe-feeding mechanism, the rotating chuck and the damper are sequentially fixed on the support frame from left to right. One end of the thrust cylinder is hinged with the support frame, and the other end is connected to the power head. The active drill pipe of the power head is connected to the drill pipe. An end of the armored cable is connected to the fishing device in the drill pipe, and the fishing head of the fishing device is connected to the spearhead of the non-core drilling tool.
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