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公开(公告)号：US20220130497A1
公开(公告)日：2022-04-28
申请号：US17291742
申请日：2020-06-04
发明人： Aijun Li , Dan Zhang , Jingchao Yuan , Meihua Shi
摘要： A Boltzmann-based method for simulating a CVI densification process of a composite material is provided. Phase space occupancy is provided in the method, such that a geometrical model can be presented by using the concept of a matrix, and components of a space are distinguished; and a phase space occupancy matrix can directly participate in operation, which is equivalent to a natural division of grids and boundaries, and the boundaries are presented by a phase parameter, which is a natural capturing process. Flow field calculation of the method uses virtual time step calculation, such that a boundary condition can be written in a unified form, thereby improving the programmability.
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公开(公告)号：US20220130082A1
公开(公告)日：2022-04-28
申请号：US17291730
申请日：2020-06-04
发明人： Aijun Li , Dan Zhang , Jingchao Yuan , Meihua Shi
IPC分类号： G06T11/00
摘要： A method for rapid reconstruction of a woven composite material microstructure based on topological features is provided. First, geometric modeling is performed according to the topological features of fiber bundles and matrix in a woven composite structure, then the topological features are identified on the basis of a μ-computed tomography (CT) sequence image, the change laws of the features are extracted, and finally, a geometric model is reconstructed to complete the modeling of a microstructure. Compared with the structure modeling method based on weaving process parameters, the consistency between the reconstructed model and a real woven structure is improved, facilitating the improvement of the accuracy of the subsequent calculation of the mechanical properties of the material; and compared with the method for structure reconstruction directly on the basis of a μCT image, a tedious point cloud data process is simplified and calculation costs are greatly reduced.
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公开(公告)号：US20230111657A1
公开(公告)日：2023-04-13
申请号：US17898861
申请日：2022-08-30
申请人： SHANGHAI UNIVERSITY
发明人： SHAORONG XIE , HENGYU LI , JINGYI LIU , YUEYING WANG , SHUANG HAN , JUN LUO
摘要： The present disclosure discloses an electro-hydraulic varifocal lens-based method for tracking a 3D trajectory of a moving object. The method includes the following steps of: (1) obtaining a functional relation between a focusing control current and camera's intrinsic parameters; (2) obtaining a functional relation between focusing control currents of the electro-hydraulic varifocal lens and an optimal object distance; (3) initializing an object tracking algorithm, and taking an object tracking box as a subsequent focusing window; (4) carrying out first autofocusing, recording a focusing control current value after the autofocusing is completed, as well as a size and center point coordinates of the object tracking box; (5) calculating and recording coordinates of the object in 3D space; and (6) repeating steps (4) and (5) for the same object, and sequentially connecting the recorded coordinates of the object in 3D space into a trajectory.
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公开(公告)号：US20230045158A1
公开(公告)日：2023-02-09
申请号：US17535747
申请日：2021-11-26
发明人： Huayan Pu , Yan Jing , Jinglei Zhao , Jun Luo , Yi Qin , Zhijiang Xie , Jie Ma
摘要： A magnetic suspension type sensing system for space full-degree-of-freedom absolute poses is provided. The system includes a reference platform, multiple quasi-zero stiffness supporting legs and a platform to be tested. The reference platform and the platform to be tested are connected in a spherical hinge mode through the multiple quasi-zero stiffness supporting legs. Each of the multiple quasi-zero stiffness supporting legs includes a lower end spherical hinge, a lower end cover, a positive stiffness unit, a negative stiffness unit, a shaft, a lower end shell, an upper end shell and an upper end spherical hinge.
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公开(公告)号：US11565349B2
公开(公告)日：2023-01-31
申请号：US17235701
申请日：2021-04-20
发明人： Bo He , Shuang Gao , Liang Lan , Zhijun Tan , Qi Zhang
IPC分类号： B23K26/34 , B33Y30/00 , B23K26/354 , B22F12/43
摘要： The present invention discloses a composite device for high-precision laser additive/subtractive manufacturing, which consists of a sealed shaping chamber, an inert protective gas source and a machine-shaping platform; wherein, the inert protective gas source is connected to the sealed shaping chamber; and the machine-shaping platform is arranged in the sealed shaping chamber, as well as there is a light path selection system is arranged right above the machine-shaping platform; in addition, there is a machining position is equipped on the machine-shaping platform, meanwhile, there are lead screws are arranged under the machine-shaping platform.
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公开(公告)号：US20220403384A1
公开(公告)日：2022-12-22
申请号：US17492465
申请日：2021-10-01
申请人： Shanghai University
发明人： Junjie XIAO , Jin LI , Yihua BEI
IPC分类号： C12N15/113 , C12N15/86 , A61K31/7088 , A61P21/00
摘要： The present disclosure belongs to the technical field of biomedicine, and provides an engineered circular RNA circmiR-29b and use thereof in preparation of a medicine for treating muscle atrophy. The present disclosure provides a circular RNA circmiR-29b including an effective sequence and a random sequence, wherein 6-13 repetitions of the effective sequence are connected in series, the random sequence is inserted between the effective sequences, and the nucleotide sequence of the effective sequence is shown in SEQ ID NO: 1. The present disclosure delivers circmiR-29b to skeletal muscle by AAV8, enabling stable expression of circmiR-29b in the skeletal muscle, thereby effectively inhibiting various types of muscle atrophy. Therefore, the present disclosure also provides a gene therapy based on the AAV8 virus vector delivering the engineered circular RNA circmiR-29b to achieve the objective of treating muscle atrophy.
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公开(公告)号：US20220390530A1
公开(公告)日：2022-12-08
申请号：US17834201
申请日：2022-06-07
申请人： Shanghai University
发明人： Tingyun Wang , Yi Huang , Chuanlu Deng , Chengyong Hu
IPC分类号： G01R33/032 , G01D5/353
摘要： Disclosed are a system and a method for measuring a magnetorefractive effect of an optical fiber. The system comprises a laser, a coupler A, a sensing optical fiber, a reference optical fiber, a carrier generator, a coupler B, a photoelectric detector and a data acquisition and processing module. The coupler A, the sensing optical fiber, the reference optical fiber and the coupler B form a Mach-Zehnder optical fiber interferometer. An external magnetic field influences the refractive index of the sensing optical fiber, so that the optical path difference between two paths of optical signals in the sensing optical fiber and the reference optical fiber is changed, the intensity of an interference optical signal output by the coupler B is changed, and the refractive index change of the sensing optical fiber under the action of the magnetic field is measured by detecting and processing the interference optical intensity.
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公开(公告)号：US11489104B2
公开(公告)日：2022-11-01
申请号：US16683478
申请日：2019-11-14
申请人： Shanghai University
发明人： Huayan Pu , Dong Zhang , Min Wang , Jun Luo , Yi Sun , Chaoqun Duan , Shunqi Zhang , Yan Peng , Shaorong Xie
IPC分类号： H01L41/09 , F16F15/00 , H01L41/053
摘要： An electromagnetic-piezoelectric composite vibration control device based on a synchronized switch damping technology is provided. An upper guiding component is installed inside the upper rigid frame, a lower guiding component is installed inside a lower rigid component, a guide rod is nested inside the upper guiding component and the lower guiding component, an upper idler wheel mechanism and a lower idler wheel mechanism are fixedly sleeved on the guide rod and are positioned between the upper guiding component and the lower guiding component respectively, an electromagnetic mechanism is fixedly sleeved outside the guide rod, one end of each piezoelectric cantilever beam is fixed between the upper rigid frame and the lower rigid frame, the other end is arranged between the upper idler wheel mechanism and the lower idler wheel mechanism, and the piezoelectric cantilever beams and the electromagnetic mechanism are connected with a circuit system respectively.
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公开(公告)号：US11486461B2
公开(公告)日：2022-11-01
申请号：US16711750
申请日：2019-12-12
申请人： Shanghai University
发明人： Min Wang , Dong Zhang , Jun Luo , Huayan Pu , Yi Sun , Chaoqun Duan , Shunqi Zhang , Yan Peng , Shaorong Xie
IPC分类号： F16F15/00 , F16F13/00 , H01L41/053 , H01L41/09 , H01L41/08 , F16F15/02 , H01L41/04 , H02J7/00 , H02N2/00
摘要： Disclosed is a self-powered vibration damper based on piezoelectricity and a control method. The damper comprises a loading platform, an energy collecting mechanism, a curved leaf spring, a vibration control mechanism and a substrate all connected in sequence, the circuit system comprises a rectifier circuit, a DC-DC voltage conversion circuit, an energy storage circuit, a control circuit and a charging battery, a first piezoelectric stack is connected with the input end of the rectifier circuit, the output end of the rectifier circuit is connected with the input end of the DC-DC voltage conversion circuit, the output end of the DC-DC voltage conversion circuit is connected with the input ends of the energy storage circuit and the charging battery, the output end of the energy storage circuit is connected with the input end of the control circuit, the output end of the control circuit is connected with the second piezoelectric stack.
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公开(公告)号：US11412810B2
公开(公告)日：2022-08-16
申请号：US17538708
申请日：2021-11-30
申请人： SHANGHAI UNIVERSITY
发明人： Zhongjie Li , Fan Shen , Yan Peng , Jun Luo , Shaorong Xie , Huayan Pu
摘要： A shoe energy collecting device includes a shell, a piezoelectric assembly, an elastic component, a magnet array, a base, a supporting block, an upper friction assembly and a lower friction assembly. The shell includes a supporting shell and a plastic shell connected in sequence. The base is provided below the supporting block in the supporting shell, the lower friction assembly is provided between the supporting block and the base. The upper friction assembly is provided on an inner wall of a top surface of the plastic shell. A coil is provided on a lower surface of the lower friction assembly at a side of the plastic shell, and the magnet array is provided below the coil. The piezoelectric assembly is provided in the plastic shell, the elastic component is provided on a side wall of the plastic shell away from the supporting block, and connected with the piezoelectric assembly.
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