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公开(公告)号：US11658523B2
公开(公告)日：2023-05-23
申请号：US17281490
申请日：2019-11-06
Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS , QINHUAI INNOVATION INSTITUTE OF NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS
Inventor： Li Yu , Zhuoran Zhang , Yuke Shi , Linnan Sun , Xu Chen
Abstract: A consequent-pole permanent magnet biased bearingless doubly-salient motor includes: a core of a stator/rotor, a middle part of a surface, facing an air gap (11), of each stator pole 1-1 is grooved toward an edge part of the stator pole 1-1 in an anti-clockwise direction, one permanent magnet is attached in each groove, and a surface, facing the air gap (11), of each permanent magnet (3) is the same in polarity; each stator pole 1-1 is wounded with an armature coil, the armature coils are serially connected in sequence to form an armature winding, and the armature winding is respectively connected to an external main circuit; and every three stator poles 1-1 are wound with a suspension coil, and the suspension coils opposite spatially and radially are serially connected to form a suspension winding connected to an external suspension control circuit.
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公开(公告)号：US20240418235A1
公开(公告)日：2024-12-19
申请号：US18747394
申请日：2024-06-18
Inventor： Liang WANG , Rui QI , Ziyu SHEN , Jiamei JIN
Abstract: Disclosed is a multi-modal and multi-degree-of-freedom piezoelectric active vibration isolation platform and a working method therefor. The piezoelectric active vibration isolation platform includes an upper platform, a lower platform, a control module, and four vibration isolation modules, where the vibration isolation module includes a passive vibration isolation unit and an active vibration isolation unit; the passive vibration isolation unit includes an upper connector, a lower connector, a cross Hooke hinge, and a first acceleration sensor; the active vibration isolation unit includes a fixed beam, a pre-tightening bolt, a second acceleration sensor, and a driving component; the platform can provide active vibration isolation for the longitudinal (axial) vibration and the bending vibration in any radial direction of a vibration isolation object, and has the advantages of fast response, resistance to electromagnetic interference, and light weight.
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公开(公告)号：US12110138B2
公开(公告)日：2024-10-08
申请号：US17778911
申请日：2021-06-04
Inventor： Feng Deng , Xiaoyuan Sun
Abstract: The present disclosure discloses a trans-media unmanned aerial vehicle device and a control method thereof. The trans-media unmanned aerial vehicle device includes a housing, and a piston which is arranged in the housing and is capable of moving in a reciprocating manner in the housing; one end of the housing is provided with an opening; several flying wings are uniformly arranged in a circumferential direction of the piston; the flying wings are rotatably connected to a side of the piston facing the opening and are spread or retracted like an umbrella; and under the pushing of the piston, the flying wings can be spread to the outside of the housing and retracted back into the housing.
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公开(公告)号：US12092627B2
公开(公告)日：2024-09-17
申请号：US18508648
申请日：2023-11-14
Applicant: Suzhou Renzheng Zhitan Technology Co., Ltd. , Nanjing University of Aeronautics and Astronautics
Inventor： Zhenghua Qian , Mingming Wang , Peng Li , Xianwei Wu , Hairui Liu , Zhi Qian , Qi Li , Zelin Xu
CPC classification number: G01N33/2858 , G01N27/025
Abstract: A signal processing system and method for inductive oil abrasive particle sensor, comprising a sensor, an excitation signal generator, an analog signal processing circuit, a MCU signal acquisition module and a computer signal processing module is disclosed. The sensor is provided with two groups of induction coils, the excitation signal generator generates excitation signals and drives the excitation coils of the sensor to output induction signals containing abrasive particle information, and the analog signal processing circuit receives the induction signals output by the sensor and demodulates and amplifies the induction signals. The signal processing system of the sensor applied to online monitoring of oil abrasive particles is simple in structure and convenient to apply, has a complete signal statistics and monitoring interface, and can be used to effectively monitor the size, concentration and other information of the metal abrasive particles in oil in real time.
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5.发明公开公开(公告)号：US20240286315A1
公开(公告)日：2024-08-29
申请号：US18572780
申请日：2022-07-23
Inventor： Zhongde SHAN , Congze FAN , Yiwei CHEN , Jinghua ZHENG , Wenzhe SONG , Jingxuan WANG
IPC: B29B11/10 , B29B11/16 , B29B15/14 , B29C64/314 , B33Y40/10
CPC classification number: B29B11/10 , B29B11/16 , B29B15/14 , B29C64/314 , B33Y40/10
Abstract: A composite filament melt impregnation device with an automatic lifting channel for additive manufacturing includes a mechanical lifting device, a heating device, a curved resin impregnation channel, a filament guide block, a single screw extruder, a replaceable combination die nozzle, and a resin riser. The composite filament melt impregnation device can significantly improve the efficiency of replacing filaments and treating broken filaments in a forming process of continuous fiber filaments, reduce the operation difficulty of a production process, and ensure the safety of operators. The design of the resin riser can achieve slight dynamic adjustment of pressure in a melt cavity in the production process, improve the stability of product quality, and ultimately achieve continuous production and rapid replacement of high-performance continuous fiber composites.
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Patent Agency Ranking
公开(公告)号：US20240159730A1
公开(公告)日：2024-05-16
申请号：US18508648
申请日：2023-11-14
Applicant: Suzhou Renzheng Zhitan Technology Co., Ltd. , Nanjing University of Aeronautics and Astronautics
Inventor： Zhenghua QIAN , Mingming WANG , Peng LI , Xianwei WU , Hairui LIU , Zhi QIAN , Qi LI , Zelin XU
CPC classification number: G01N33/2858 , G01N27/025
Abstract: A signal processing system and method for inductive oil abrasive particle sensor, comprising a sensor, an excitation signal generator, an analog signal processing circuit, a MCU signal acquisition module and a computer signal processing module is disclosed. The sensor is provided with two groups of induction coils, the excitation signal generator generates excitation signals and drives the excitation coils of the sensor to output induction signals containing abrasive particle information, and the analog signal processing circuit receives the induction signals output by the sensor and demodulates and amplifies the induction signals. The signal processing system of the sensor applied to online monitoring of oil abrasive particles is simple in structure and convenient to apply, has a complete signal statistics and monitoring interface, and can be used to effectively monitor the size, concentration and other information of the metal abrasive particles in oil in real time.
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公开(公告)号：US11946122B2
公开(公告)日：2024-04-02
申请号：US17263876
申请日：2020-07-23
Inventor： Dongdong Gu , Kaijie Lin , Jingfeng Quan , Yamei Fang , Qing Ge , Jie Zhuang , Yang Liu , Weisong Dong , Pengjiang Shuai
IPC: C22C38/00 , B22F1/05 , B22F1/065 , B22F9/04 , B22F10/28 , B22F10/322 , B22F10/36 , B22F10/366 , B23K26/00 , B23K26/342 , B33Y10/00 , B33Y70/00 , B23K103/04
CPC classification number: C22C38/007 , B22F9/04 , B22F10/28 , B22F10/36 , B22F10/366 , B23K26/0006 , B23K26/342 , B33Y70/00 , B22F1/05 , B22F1/065 , B22F2009/043 , B22F10/322 , B22F2301/255 , B22F2301/35 , B22F2304/10 , B23K2103/05 , B33Y10/00 , B22F2998/10 , B22F1/052 , B22F2009/043 , B22F10/28
Abstract: The present disclosure relates to a micron silver particle-reinforced 316L stainless steel matrix composite, including a 316L stainless steel matrix and silver particles uniformly distributed in the 316L stainless steel matrix. The silver particles have a weight 1% to 5% of the total weight of the composite; and the composite has a density of 7.9 g/cm3 to 8.2 g/cm3 and a relative density of more than 98%. The composite is prepared by the following method: mixing raw materials of a spherical silver powder and a spherical 316L stainless steel powder; subjecting a resulting mixture to mechanical ball milling to obtain a mixed powder; sieving the mixed powder and adding a resulting powder to a powder cylinder of an SLM forming machine; and charging an inert protective gas for printing to obtain the composite.
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8.发明公开公开(公告)号：US20240034463A1
公开(公告)日：2024-02-01
申请号：US18257610
申请日：2022-01-25
Inventor： Yongjie SHI , Taihang MA , Zhiyuan HU , Guohua XU , Yang LIU
IPC: B64C27/00 , G10K11/178
CPC classification number: B64C27/001 , G10K11/17883 , G10K11/17875 , B64C2027/004 , B64C2220/00
Abstract: A helicopter active noise suppression device integrating a sound array and on-propeller control, which relates to the technical field of helicopter noise reduction, includes an annular loudspeaker array, a plurality of force exciters, an error microphone, an Active Noise Cancellation (ANC) controller, a cockpit sensor, and an airborne computer. The annular loudspeaker array is arranged at a rotor hub and unsteady force exciters are arranged at each blade trailing edge to construct a sound field in an reversed phase to the sound wave of an original sound field with an ANC principle, thereby counteracting the noise and realizing the noise reduction of all-domain and all-type helicopter noise.
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公开(公告)号：US11878360B2
公开(公告)日：2024-01-23
申请号：US18347260
申请日：2023-07-05
Inventor： Di Zhu , Shuanglu Duan , Jia Liu , Dong Zhu
Abstract: The present disclosure provides an electrochemical machining device and a method for a blisk using an electrode array, which relate to the technical field of electrochemical machining. The electrochemical machining device comprises an outer ring-shaped rotating ring, an inner ring-shaped base and a plurality of cathode rods. An inner diameter of the outer ring-shaped rotating ring is larger than an outer diameter of the inner ring-shaped base, and an inner diameter of the inner ring-shaped base is larger than an outer diameter of the blisk. The outer ring-shaped rotating ring and the inner ring-shaped base are coaxially arranged. Middle parts of the cathode rods are connected with the inner ring-shaped base, outer ends of the cathode rods are rotatably connected with the outer ring-shaped rotating ring, and inner ends of the cathode rods are provided with trepanning cathode pieces or radial feeding electrodes.
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公开(公告)号：US20230398601A1
公开(公告)日：2023-12-14
申请号：US18037783
申请日：2022-09-05
Inventor： Haoqin YANG , Zhongde SHAN , Qinjiang LIU , Jianpei SHI , Dandan YAN , Shijie DONG
Abstract: A method for preparing a negative pressure film-covering frozen sand mold includes: directly obtaining a mold cavity of a sand mold through numerically controlled machining of a frozen sand blank; covering a surface, brushed with a thermal insulation coating, of the mold cavity of the sand mold with a softened thin film, and covering an outer surface of the sand mold with a back film to seal a sand box; fixing the frozen sand mold in an air extraction sand box with a vacuum chamber, and extracting air through a vacuum pump, so that the thin film tightly adheres to the sand mold through vacuum suction force; and closing the box to obtain an integral sand mold, and pouring a casting at room temperature or low temperature under negative pressure. The method is environment-friendly, and the prepared frozen sand mold has high strength and is convenient for sand cleaning.
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