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公开(公告)号：US20220033362A1
公开(公告)日：2022-02-03
申请号：US17388067
申请日：2021-09-16
申请人： Intelligent Manufacturing Institute of Hefei University of Technology , Hefei University of Technology
发明人： Mei LUO
IPC分类号： C07D239/26 , B01J31/02
摘要： Disclosed is a method of synthesizing a 2-hydroxyphenyl-5-pyrazinel ketone represented by the following chemical formula (I), comprising: weighing 0.048 g of a palladium complex, 0.8413 g of chromone-3-formaldehyde and 2.5719 g of ammonium formate into a 100 mL round bottom flask, then adding 50 mL of anhydrous methanol to dissolve, heating to reflux for 36 h, then stopping the reaction, performing column chromatography with petroleum ether and dichloromethane in a volume ratio of 1:1, and then naturally volatilizing the first component to obtain a light yellow crystal, namely the 2-hydroxyphenyl-5-pyrazinel ketone, referred to as compound (I); the chemical formula of the compound (I) is as follows: an application of compound (I) as a catalyst in the reaction of benzophenone imine and trimethylsilyl nitrile showing a good catalytic performance, with a conversion rate of 69.1%.
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公开(公告)号：US11517953B2
公开(公告)日：2022-12-06
申请号：US16719929
申请日：2019-12-18
发明人： Lihua Zhou , Zhenxin Cao
摘要： A NC machine for stretch bending and monitoring method for clamping force of round clamp thereof is invented, which includes a round head clamp, a hydraulic system and a clamping force monitoring device. The round head clamp includes a housing, an internal module arranged in the housing and a positioning member for positioning the internal module in the housing. The hydraulic system includes a hydraulic rod and a hydraulic ram for pushing the hydraulic rod. The clamping force monitoring device includes a sensor and a data processing module. The present invention is suitable for the workpiece of different shapes and sizes. In this invention, the clamping force can be adjusted in real time when it needs to be changed, and this not only can avoid the problems of excessive energy consumption, excessive clamping marks and damage of the workpiece, but also save energy and protect the workpiece.
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公开(公告)号：US11486925B2
公开(公告)日：2022-11-01
申请号：US16870940
申请日：2020-05-09
发明人： Yigang He , Wei He , Baiqiang Yin , Bing Li , Zhigang Li , Lei Zuo , Chaolong Zhang
IPC分类号： G01R31/3163 , G06N5/04 , G06N20/00 , G06N3/00
摘要： A method for diagnosing analog circuit fault based on vector-valued regularized kernel function approximation, includes steps of: step (1) acquiring a fault response voltage signal of an analog circuit; step (2) carrying out wavelet packet transform on the collected signal, and calculating a wavelet packet coefficient energy value as a characteristic parameter; step (3) utilizing a quantum particle swarm optimization algorithm to optimize a regularization parameter and kernel parameter of vector-valued regularized kernel function approximation, and training a fault diagnosis model; and step (4) utilizing the trained diagnosis model to recognize circuit faults.
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公开(公告)号：US11465188B2
公开(公告)日：2022-10-11
申请号：US16903006
申请日：2020-06-16
发明人： Hua Zhai , Yucheng Wu , Huaihao Song , Rui Lei , Shenglong Wang , Wenchao Shi
摘要： A robot for straightening double thin-wall section pipe with undesirably shaped cavities, includes two racks, a positioning component, a shaping component and a driving component. In operation, the double thin-wall section pipe is put in the positioning component, and the shaping component is used for shaping the pipe by the driving of the driving component. The robot improves the working efficiency, and is not only compact in structure design, stable in movement, precise in positioning and reliable in locking, but also convenient for disassembly and maintenance.
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公开(公告)号：US20220320865A1
公开(公告)日：2022-10-06
申请号：US17642240
申请日：2021-06-29
发明人： Xing ZHANG , Zixuan GUO , Shaolong CHEN , Yang WANG , Hailong PAN , Qian GAO , Zhen XIE
IPC分类号： H02J3/24 , G05B19/042
摘要： A stability control method for a virtual synchronous generator (VSG) in a strong grid based on an inductance-current differential feedback is provided. A grid-connected topological structure of a VSG using the control method includes a direct-current (DC)-side voltage source, a three-phase inverter, a three-phase grid impedance and a three-phase grid. By controlling the VSG and controlling the inductance-current differential feedback, the method suppresses the oscillation of the output power from the VSG in the strong grid and implements the stable operation of an inner-loop-free VSG in the strong grid, without adding the physical inductance, increasing the cost of the filter and additionally providing a grid-side current sensor.
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公开(公告)号：US11433762B1
公开(公告)日：2022-09-06
申请号：US17676306
申请日：2022-02-21
发明人： Hong Bao , Jing Yang , Tianci Liu , Hongzhen Li , Jinxuan Tao , Junguo zhang
摘要： A device for supplying ammonia with solid adblue includes a urea tank, a gasholder, a heating apparatus, a mixing mechanism, a one-way valve, a first temperature sensor, a second temperature sensor, a first baroceptor, a controller. The mixing mechanism includes a first pipe, second pipe a third pipe, and media. The device is easy to has the same temperature everywhere, and then the heat distribution of the urea tank can be evenly. Thus the effectiveness about the heating apparatus is elevated.
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公开(公告)号：US11409347B2
公开(公告)日：2022-08-09
申请号：US16284064
申请日：2019-02-25
发明人： Kaile Zhou , Zhifeng Guo , Shanlin Yang , Pengtao Li , Lulu Wen , Xinhui Lu
摘要： The disclosure provides a method, a system and a storage medium for predicting power load probability density based on deep learning. The method comprises: S101, collecting power load data of a user, meteorological data and air quality data in a preset historical time period, and dividing the collected data into a training set and a test set; S102, determining a deep learning model for predicting power load; S103, inputting the test set into the deep learning model for predicting power load, and obtaining power load prediction data of the user at different quantile points in a third time interval; S104, performing kernel density estimation and obtaining a probability density curve of the power load of the user in the third time interval.
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公开(公告)号：US11325243B2
公开(公告)日：2022-05-10
申请号：US17594388
申请日：2020-05-27
发明人： Bin Zi , Xu Wang , Zhengyu Wang , Daoming Wang , Sen Qian , Wei You , Lei Zheng
摘要： A flexible-rope-driven hybrid spray painting robot mechanism includes a static platform framework, a flexible-rope-guided pulley train, flexible transmission ropes, a moving platform, and drive mechanisms. A moving platform casing is driven by eight flexible ropes in parallel, to realize three degrees of freedom of translation thereof. A spray gun is connected in series to the moving platform casing via a universal joint cross, and is driven by four flexible ropes in parallel, to realize two degrees of freedom of rotation thereof. Beneficial technical effect of the present invention: The flexible ropes are used in parallel to control three degrees of freedom of translation and two degrees of freedom of rotation of the end spray gun, achieving advantages of a small movement inertia and flexible movement. Electric drive devices are placed together in a bottom layer of the static platform framework and are isolated from a spraying space.
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公开(公告)号：US11203647B2
公开(公告)日：2021-12-21
申请号：US16740576
申请日：2020-01-13
发明人： Bao Zhang , Baocai Xu , Xiaomin Li , Peijun Li , Yi Pan , Ran Meng , Xiaolong Li , Wenjie Liu
摘要： The present application discloses dual-function starch-based composite nanoparticles as well as a preparation method and application thereof. The preparation method comprises: hydrolyzing starch to form linear dextrin, grading the linear dextrin by using an alcohol-alcohol gradient precipitation method to obtain linear dextrin having homogeneous molecular weight distribution; oxidizing the linear dextrin by adopting an oxidation system to obtain oxidized dextrin; carrying out complex reaction on the oxidized dextrin and curcumin to form an oxidized dextrin-curcumin complex; and forming an oxidized dextrin-curcumin/chitosan hydrochloride composite nanoparticles from the oxidized dextrin-curcumin complex and chitosan hydrochloride. The aqueous phase solution of the dual-function starch-based composite nanoparticles containing gel polysaccharide is uniformly mixed with primary emulsion, calcium ion induction is carried out on the obtained double emulsion to obtain double-emulsion gel.
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公开(公告)号：US20210387351A1
公开(公告)日：2021-12-16
申请号：US17143841
申请日：2021-01-07
发明人： Daoming WANG , Pengtao XIE , Bin ZI , Zhengyu WANG , Sen QIAN , Zitong HUANG
IPC分类号： B25J11/00 , B05B13/04 , B24B7/18 , B24B41/02 , B25J9/10 , B25J5/00 , B08B3/02 , B08B3/08 , B08B13/00
摘要： The present disclosure relates to a rope traction type grinding, cleaning, and coating integrated operation robot. The operation robot includes a hanging basket, a first traction mechanism connected to the hanging basket, a grinding mechanism arranged in front of the hanging basket, and a cleaning and spraying mechanism and a spring reaction force regulation mechanism arranged in the hanging basket. The first traction mechanism includes first ropes for connecting the hanging basket and first rope winding mechanisms. The cleaning and spraying mechanism includes a first vertical plate and a second vertical plate that are arranged in parallel in a vertical direction. A cleaning nozzle and a spraying nozzle are mounted on the first vertical plate. From the above technical solution, it can be seen that the operation robot adopts a rope traction manner, and has the advantages of large work space, low mechanism inertia, and accurate and reliable location.
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