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公开(公告)号：US12057793B2
公开(公告)日：2024-08-06
申请号：US17918324
申请日：2022-05-27
Inventor： Hui Cai
CPC classification number: H02P21/18 , H02P25/08 , H02P2203/01
Abstract: The present invention discloses an all-speed-range estimation method for a rotor position of a switched reluctance motor. Under a low-speed working condition, a sector is selected for triggering according to comparison between a current response value and a current threshold, so as to determine the rotor position of the motor; under a medium-speed working condition, the rotor position of the motor is determined, according to a change of the number of injected pulses with the motor speed, by querying a preset data table; under a high-speed working condition, a capacitor charging loop is designed since there is a small number of injected pulses; a response current formed by during injection of a pulse voltage charges a capacitor; the capacitor is detected to measure a voltage; and the rotor position is determined by querying a preset voltage-rotor position data table according to a voltage value.
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公开(公告)号：US11714035B2
公开(公告)日：2023-08-01
申请号：US18172181
申请日：2023-02-21
Inventor： Wei Li , Zhuoyin Peng , Lei Li , Cong Li , Jian Chen , Fei Chen , Yong Yan , Dapeng Jiang , Guowei Bai , Yaopeng Chang , Huang Huang , Weiying Huang , Libo Zhou , Jianlin Chen , Yanjie Ren , Jianjun He
CPC classification number: G01N3/08 , G01N1/44 , G01N3/06 , G01N2203/0017 , G01N2203/04
Abstract: Disclosed is a device for testing corrosion fatigue resistance on the basis of acoustic emission. The device includes: a main machine including a supporting frame and a tensile mechanism arranged on the supporting frame; a clamping mechanism including a first clamp and a second clamp that is arranged opposite the first clamp, where the first clamp and the second clamp are both connected to the tensile mechanism, the tensile mechanism is used for driving the first clamp and the second clamp to move close to or away from each other, the first clamp is provided with an accommodation cavity for accommodating a corrosive substance, the accommodation cavity is provided with an opening that is provided on the first clamp and close to one end of the second clamp, and the first clamp can place a test specimen in the accommodation cavity when fixing the test specimen.
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公开(公告)号：US11221286B2
公开(公告)日：2022-01-11
申请号：US16880436
申请日：2020-05-21
Inventor： Guoping Qian , Huanan Yu , Changyun Shi , Xiangbing Gong , Xi Li , Jun Cai , Wenchao Wu
Abstract: The present invention discloses a method for detecting compaction and shear strength characteristics of an asphalt mixture during construction compaction. The method mainly includes the following steps: using a device for detecting compaction and shear strength characteristics of the asphalt mixture; pressing a test claw into the asphalt mixture during construction; rotating the test claw slowly and uniformly to measure an internal temperature and a shear characteristic of the mixture during paving and subsequent compaction; calculating a corresponding compaction detection index based on the shear characteristic; and monitoring and guiding the construction quality and construction process accordingly based on the real-time detection index. The present invention measures the compaction detection index of the asphalt mixture during compaction simply, quickly and accurately. The present invention uses the compaction detection index together with a degree of compaction for dual control of asphalt pavement compaction.
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公开(公告)号：US11089811B2
公开(公告)日：2021-08-17
申请号：US17038130
申请日：2020-09-30
Inventor： Jianhui Wang , Zhimin Cheng , Dongmin Liu , Yan Wang , Shouyao Xiong , Jingheng Ning , Wen Li , Yongsheng Zhang , Zhiqiang Hu , Lei Yang , Yaru Sun
Abstract: A device for processing gluten products includes an extruder. A press forming mold that includes a fixed mold and a movable mold is provided at a discharge end of the extruder. A bowl is provided at an end surface of the fixed mold, and a bowl matched with the bowl of the fixed mold is provided at an end surface of the movable mold. A feeding channel is provided inside the fixed mold. A through hole is provided in the movable mold. An feed tube which is movable relative to the movable mold is arranged in the through hole. A die holder is arranged at the other end surface of the movable mold for holding the feed tube, and is movable with respect to the movable mold. A push-and-pull mechanism is provided at an end of the die holder.
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公开(公告)号：US11089719B2
公开(公告)日：2021-08-10
申请号：US16942519
申请日：2020-07-29
Inventor： Xiaoqin Sun , Jie Li , Shuguang Liao
Abstract: A computer room heat-pipe air conditioning system with an emergency cooling control method. The system comprises a phase-change energy storage module, a phase-change material packaging body, a condenser housing, a condenser, a cold releasing pump, evaporators, evaporation fans, four three-way valves, a cooling unit, standby power generators and storage batteries. The three-way valves are opened and closed based on a preset heat-pipe cooling criteria in combination with phase-change energy storage technology.
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Patent Agency Ranking
公开(公告)号：US20210126450A1
公开(公告)日：2021-04-29
申请号：US16616975
申请日：2018-07-04
Inventor： Xiangjun ZENG
Abstract: The present invention discloses a safe operation method for voltage reduction arc suppression of a ground fault phase of a non-effective ground system, for use in ground fault safety operation of a neutral point non-effective ground generator or distribution network. When a single-phase ground fault occurs, an external voltage source is applied at a non-effective ground system side between a bus and the ground, or between a line and the ground, or between a neutral point and the ground, or between a shunting tap of a non-effective ground system side winding of a transformer and the ground, to reduce the fault phase voltage to be lower than the continuous burning voltage of a ground arc, thereby meeting the requirements of long-term non-stop safe operation. The operation means and control method effectively prevent power outages, and improve the reliability and security of power supply.
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公开(公告)号：US20210088430A1
公开(公告)日：2021-03-25
申请号：US16880436
申请日：2020-05-21
Inventor： Guoping QIAN , Huanan YU , Changyun SHI , Xiangbing GONG , Xi LI , Jun CAI , Wenchao WU
Abstract: The present invention discloses a method for detecting compaction and shear strength characteristics of an asphalt mixture during construction compaction. The method mainly includes the following steps: using a device for detecting compaction and shear strength characteristics of the asphalt mixture; pressing a test claw into the asphalt mixture during construction; rotating the test claw slowly and uniformly to measure an internal temperature and a shear characteristic of the mixture during paving and subsequent compaction; calculating a corresponding compaction detection index based on the shear characteristic; and monitoring and guiding the construction quality and construction process accordingly based on the real-time detection index. The present invention measures the compaction detection index of the asphalt mixture during compaction simply, quickly and accurately. The present invention uses the compaction detection index together with a degree of compaction for dual control of asphalt pavement compaction.
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公开(公告)号：US20210025846A1
公开(公告)日：2021-01-28
申请号：US16955797
申请日：2019-08-24
Inventor： Zhong CAO , Yuyu PENG , Chen LIU , Ling TANG , Qin ZHU , Min JIN , Jinglin HE , Zhongliang XIAO
IPC: G01N27/414
Abstract: A method and a sensor for detecting L-cysteine based on a 3,3′-dithiobis (1-propanesulfonate)-mercury composite membrane are provided. The method includes: implanting a p-well and an N-type substrate on field effect transistor substrate, constructing a source electrode and a drain electrode at the p-well, constructing a silicon dioxide layer on the substrate, plating an aluminum-copper alloy layer, a chromium-palladium alloy layer, and a gold film layer on a polysilicon gate substrate, constructing a silicon nitride layer on the substrate and the silicon dioxide layer; extending a gate part; preparing an ethanol solution of disodium 3,3′-dithiobis (1-propanesulfonate), cleaning and soaking gate gold electrode in the solution, followed by soaking in an ethanol solution of mercuric nitrate, and then washing the gate gold electrode; connecting electrode interfaces, inserting the electrode into PBS, and connecting power interfaces to a stabilized voltage supply, connecting a signal output interface to a multimeter.
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公开(公告)号：US20210007388A1
公开(公告)日：2021-01-14
申请号：US17038130
申请日：2020-09-30
Inventor： Jianhui WANG , Zhimin CHENG , Dongmin LIU , Yan WANG , Shouyao XIONG , Jingheng NING , Wen LI , Yongsheng ZHANG , Zhiqiang HU , Lei YANG , Yaru SUN
Abstract: A device for processing gluten products includes an extruder. A press forming mold that includes a fixed mold and a movable mold is provided at a discharge end of the extruder. A bowl is provided at an end surface of the fixed mold, and a bowl matched with the bowl of the fixed mold is provided at an end surface of the movable mold. A feeding channel is provided inside the fixed mold. A through hole is provided in the movable mold. An feed tube which is movable relative to the movable mold is arranged in the through hole. A die holder is arranged at the other end surface of the movable mold for holding the feed tube, and is movable with respect to the movable mold. A push-and-pull mechanism is provided at an end of the die holder.
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公开(公告)号：US10787327B2
公开(公告)日：2020-09-29
申请号：US16576778
申请日：2019-09-20
Inventor： Lairong Yin , Anwei Jiang , Lin Hu , Juan Huang , Shuo Cai , Jinqing Zhan , Dang Zhou
Abstract: The invention discloses a multi-bar linkage mechanism based conveyor, comprising a gantry system, a multi-bar linkage mechanism based conveyor boom, a boom support, a two-drum winch, a roller unit and an automatic control system. The gantry system, the two-drum winch and the boom support are mounted on a deck of a hull. The conveyor boom is formed of multi-bar linkage mechanisms, the movement of which can be changed. Rollers are mounted on the conveyor boom. The rear segment of the conveyor boom is articulated with the boom support. The two-drum winch is connected to the multi-bar linkage mechanism based conveyor boom via a steel wire rope and by a set of gantry pulleys. A hydraulic device and a control device are arranged between adjacent multi-bar linkage mechanisms. A tension sensor is arranged at an end of the steel wire rope. The whole conveyor is controlled by the automatic control system.
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