公开(公告)号：US20220113454A1

公开(公告)日：2022-04-14

申请号：US17422171

申请日：2020-07-16

申请人： UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY

发明人： Bo DAI ,  Liang ZHANG ,  Dawei ZHANG ,  Songlin ZHUANG

IPC分类号： G02B3/00

摘要： A method for fabricating a fly-eye lens comprises the following steps: preparing a fly-eye mold (1) and a fly-eye base (2), wherein the fly-eye mold (1) is provided with a hemispherical recess that matches the fly-eye base (2), the bottom of the hemispherical recess is provided with a number of arrayed concave surfaces, the fly-eye base (2) has a hemispherical structure, mini-channels (3) penetrating through a spherical surface and a flat surface of the fly-eye base (2) are arranged inside the fly-eye base, and the arrangement of openings of the mini-channels (3) at the spherical surface is in consistency with that of the concave surfaces inside the fly-eye mold (1); and installing the fly-eye base (2) in the fly-eye mold (1) in a fitted manner, injecting polydimethylsiloxane through the mini-channels (3) of the fly-eye base (2), curing the polydimethylsiloxane, and removing the fly-eye base (2) from the fly-eye mold (1) to obtain the fly-eye lens.

公开(公告)号：US20220092742A1

公开(公告)日：2022-03-24

申请号：US17288933

申请日：2020-09-29

申请人： UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY ,  YUNWU NETLINK (SUZHOU) INTELLIGENT TECHNOLOGY CO., LTD

发明人： SONGWEN PEI ,  JING FAN

IPC分类号： G06T5/00 ,  G06N3/04

摘要： The present invention relates to a learning method of generative adversarial network (GAN) with multiple generators for image denoising, and provides a generative adversarial network with three generators. Such generators are used for removing Poisson noise, Gaussian blur noise and distortion noise respectively to improve the quality of low-dose CT (LDCT) images; the generators adopt the residual network structure. The mapped short connection used in the residual network can avoid the vanishing gradient problem in a deep neural network and accelerate the network training; the training of GAN is always a difficult problem due to the unreasonable measure between the generative distribution and real distribution. The present invention can stabilize training and enhance the robustness of training models by limiting the spectral norm of a weight matrix.

公开(公告)号：US20220021282A1

公开(公告)日：2022-01-20

申请号：US17296242

申请日：2019-02-01

申请人： UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY

发明人： Aijuan JIN ,  Shaolong LI

IPC分类号： H02K11/33 ,  H02K1/14 ,  H02K1/26 ,  H02K5/22

摘要： The present invention provides a shunt wound direct-current (DC) motor driving device and electrical equipment. The shunt wound DC motor driving device provided by the present invention includes a shunt wound DC motor, a DC power supply, and a chopper that converts a constant voltage into a variable voltage based on a control signal and provides the variable voltage for the shunt wound DC motor. The chopper is provided with m chopping units; the control signal includes m unit control signals that respectively correspond to the m chopping units and are formed according to a preset phase stagger rule; each of the unit control signals includes w switching control signals that correspond to w switching control ends in the corresponding chopping units; m first power output ends of all the chopping units and m second power output ends of all the chopping units respectively correspondingly form m pairs of power output terminals; and m pairs of external wiring terminals of the shunt wound DC motor are connected with the m pairs of power output terminals in a one-to-one correspondence manner, wherein m is a positive integer of being not less than 2; and w is 1, 2 or 4.

公开(公告)号：US20210406428A1

公开(公告)日：2021-12-30

申请号：US16962220

申请日：2020-03-13

申请人： UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY

发明人： XI LU

IPC分类号： G06F30/23

摘要： The invention provides a structural static strength design method based on the strength field, aiming to solve the present phenomenon that the stress field is mismatched with the overall strength in the existing structural static strength design process according to the overall strength perspective. In the present invention, the static strength of a mechanical structure and its components are treated as a field, the structural stress field and the static strength field are organically matched, and the specific method is that the ideal static strength field distribution of the dangerous cross-section of the structure is determined according to the limiting static stress amplitude distribution of the dangerous cross-section of the structure; designing an actual static strength field of the dangerous cross-section of the structure by combining materials and heat treatment; using the full field stress-strength interference model, the static strength design level of dangerous cross-section of structure can be quantitatively evaluated.

公开(公告)号：US20210381963A1

公开(公告)日：2021-12-09

申请号：US17321413

申请日：2021-05-15

申请人： University of Shanghai for Science and Technology ,  CHONGQING INSTITUTE FOR FOOD AND DRUG CONTROL

发明人： Yan PENG ,  Linggao ZENG ,  Yiming ZHU ,  Qingrou YANG ,  Chenjun SHI ,  Xu WU ,  Songlin ZHUANG

IPC分类号： G01N21/3581

摘要： A method for qualitative identification and quantitative determination of caffeine in a drug. In the method, terahertz absorption coefficient spectra of drugs with different concentrations of caffeine are measured, from which the frequency points, amplitudes and peak areas of characteristic peaks of the drugs with different concentrations of caffeine are obtained as characteristic quantities. Concentration gradients are established between the concentrations and the characteristic quantities, respectively. The characteristic quantities are imported to the SVR model to establish a training set and a test set. Finally, the qualitative identification and quantitative analysis of caffeine in unknown drugs are achieved.

公开(公告)号：US20210270731A1

公开(公告)日：2021-09-02

申请号：US17321668

申请日：2021-05-17

申请人： University of Shanghai for Science and Technology

发明人： Yan PENG ,  Yiming ZHU ,  Ruijie PENG ,  Yanchen ZHOU ,  Weinan GE ,  Jinbiao ZHANG ,  Songyan HU ,  Can SUN ,  Li ZHOU ,  Xitian HU

IPC分类号： G01N21/3581 ,  G01N33/483

摘要： The present disclosure provides a terahertz biological detection method and a device comprising the same, in which biological samples with different molecular formulas have their characteristic peaks in the terahertz band. In the process of sweeping frequency with terahertz, when the terahertz frequency point corresponds to the characteristic peak frequency of the substance to be detected, resonant absorption occurs, and the transmitted/reflected terahertz wave electric field intensity will suddenly decrease. In the electromagnetically induced transparency spectrum corresponding to the Rydberg quantum state, the signal splitting amplitude is significantly reduced. Therefore, the characteristic peak frequency and specific content of the substance to be detected can be accurately determined by comparing the dependence of the Rydberg quantum state with the additional terahertz electric field intensity on the excitation energy level.

公开(公告)号：US20200208696A1

公开(公告)日：2020-07-02

申请号：US16588328

申请日：2019-09-30

申请人： University of Shanghai for Science and Technology

发明人： Shuwen WANG ,  Huan ZHANG ,  Xuegang ZHANG ,  Wang GUO ,  Deyu ZHAO

IPC分类号： F16D65/12 ,  F16D65/00 ,  C21D1/09 ,  C21D1/62 ,  B23K26/352

摘要： The present invention discloses a vibration-damping and noise-reducing brake disc, where the vibration-damping and noise-reducing brake disc includes an intermediate disc having an outer side and a braking ring which surrounds the outer side of the intermediate disc. Two opposite surfaces of the braking ring are frictional surfaces provided with at least one laser scanning strip, where the laser scanning strip is obtained or formed by laser quenching and hardening treatments of the two frictional surfaces by a laser machine, for changing the physical and mechanical properties of the braking ring, such as the surface and inside hardness, residual stress distribution on the frictional surfaces, and the inside micro-structures of the braking ring, so as to suppress the generation of frictional vibration and noise during braking operations. The vibration-damping and noise-reducing brake disc of the present invention has stable coefficients of friction in braking operations, therefore, the occurrence of frictional noise and vibrations of the brake disc can be reduced, and the operational performance of the vehicle with such brake discs can be improved.

公开(公告)号：US20200048096A1

公开(公告)日：2020-02-13

申请号：US16498355

申请日：2018-03-27

申请人： UNIVERSITY OF SHANGHAI FOR SCIENCE AND TECHNOLOGY

发明人： Shuling SHEN ,  Junhe YANG

IPC分类号： C01B32/198

摘要： The invention discloses a method for preparing graphene oxide quantum dots in a large scale with cryptocrystalline graphite, comprising the following steps: mixing a certain amount of cryptocrystalline graphite powder, sodium nitrate, and sulfuric acid with ultrasonic treating; stirring the solution for 1-3 hours in ice-water bath; adding a certain amount of potassium permanganate, and mixing while stirring, then increasing temperature; adding deionized water, increasing the temperature and maintain for 1-3 hours, then diluting with water and adding a certain amount of hydrogen peroxide, stirring followed by standing and staying overnight; adding hydrochloric solution; adding water into the solution, implementing centrifugal clean till the pH value equals 7, and implementing centrifugally ultrasonic treatment, thereby obtain the graphene oxide quantum dot. According to the method of the invention, the raw materials are abundant and low in cost; the process is simple; the acquired graphene oxide quantum dots is high in yield and uniform in size; the graphene oxide quantum dots can be applied in fields such as catalysis, bio-labeling and electronic image.