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1.发明公开公开(公告)号：US20230275499A1
公开(公告)日：2023-08-31
申请号：US18012984
申请日：2022-01-04
发明人： Yiming SHEN , Yanfei CAO , Yan YAN , Tingna SHI , Changliang XIA
IPC分类号： H02K41/03 , B65G54/02 , H02K11/215 , H02P25/064
CPC分类号： H02K41/031 , B65G54/02 , H02K11/215 , H02P25/064
摘要： A direct-drive type annular flexible transportation system and a collaborative control method thereof are provided. The direct-drive type annular flexible transportation system includes an annular base, a primary excitation type linear motor, an power supplying module, a power driving module, a position detection module, and a wireless communication module. The primary excitation type linear motor includes a long stator and a plurality of movers. The long stator is formed by connection of stator iron cores presenting a multi-segment cogging structure and is installed on the annular base. Each of the movers includes a short primary, a power driving module, a position detection module, and a wireless communication module. The short primary is formed by an asymmetrically-structured permanent magnet array, an armature winding, and a primary iron core.
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公开(公告)号：US20240333060A1
公开(公告)日：2024-10-03
申请号：US18733809
申请日：2024-06-04
发明人： Dong YAN , Haowei LEI , Peidong HU , Zhen ZHANG , Yan YAN , Wei CHEN , Tingna SHI
IPC分类号： H02K3/28
CPC分类号： H02K3/28 , H02K2213/03
摘要： The invention relates to a double-layer winding layout method suitable for asymmetrical winding machine. The method is implemented by three main steps: 1) the design of the initial double-layer winding layout structure for each machine unit, which is based on the principle of the largest number of spokes belonging to phase A; 2) rearranging the number of spokes in positive (e.g., labeled a-phase belt) and negative sectors (e.g., labeled x-phase belt) belonging to phase A for making slot numbers equally divided; 3) solving the serial number of the stator slot in reverse to get the final winding layout schemes which contain multiple layout structures for one slot-pole combination. The method of the present invention improves the conventional star-of-slot theory based on the distribution characteristics of the asymmetrical windings, perfects the general design theory of double-layer asymmetrical winding structure.
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3.发明公开公开(公告)号：US20230208329A1
公开(公告)日：2023-06-29
申请号：US17794986
申请日：2021-08-03
发明人： Tingna SHI , Chen LI , Yan YAN , Changliang XIA
IPC分类号： H02P21/00 , H02P25/022 , H02P27/12 , H02P21/22 , H02P21/18
CPC分类号： H02P21/0085 , H02P25/022 , H02P27/12 , H02P21/22 , H02P21/18 , H02P21/0017
摘要： The present disclosure provides a predictive control method of current increment for a permanent magnet synchronous motor includes: substituting a mathematical expression of a stator voltage during one control period into a continuous time domain current model to obtain a discrete current prediction model and a predicted current at the next time point; obtaining a predicted current increment from a current increment prediction model by subtracting a predictive current at a present time point from a predictive current at a next time point; establishing a cost function according to a preset reference current increment and the predicted current increment; obtaining an optimal voltage increment by minimizing the cost function; superposing the optimal voltage increment on a stator voltage of a present control period to obtain an optimal stator voltage of a next control period for controlling control the permanent magnet synchronous motor.
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4.发明公开公开(公告)号：US20240364246A1
公开(公告)日：2024-10-31
申请号：US18586554
申请日：2024-02-26
发明人： Changliang XIA , Mengting YE , Chen LI , Zhanqing ZHOU , Yan YAN , Tingna SHI
IPC分类号： H02P21/18
CPC分类号： H02P21/18
摘要： A method for quickly determining the rotor position of a permanent magnet motor using the N-division approach is provided. The method involves converting the motor's three-phase stator current coordinates into the dq two-phase synchronous rotation coordinate system and identifying the initial rotor position area. By establishing a stator current cost model and utilizing the d-axis stator current, the initial rotor position can be obtained. Subsequently, the N-division approach is employed for iterative optimization to obtain the estimated rotor position and the final position region, leading to a rapid estimation of the permanent magnet motor's rotor position. This method incorporates the finite set model predictive control concept into a phase-locked loop based on stator current, eliminating the need for additional rotor position polarity judgment and invalid rotor position control variables.
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5.发明公开公开(公告)号：US20240262891A1
公开(公告)日：2024-08-08
申请号：US17294414
申请日：2020-03-30
申请人： ZHEJIANG UNIVERSITY
发明人： Jiyoung ZHOU , Min LIAO , Yan YAN , Boli HU , Jinyan GU , Xiaojuan ZHENG , Weiren DONG , Yulan JIN
IPC分类号： C07K16/10 , G01N33/569
CPC分类号： C07K16/10 , G01N33/56983 , C07K2317/34 , G01N2333/145
摘要： The present invention discloses a hybridoma cell line for secreting monoclonal antibody against rabies virus M protein and application thereof, relates to the field of biotechnology. A classification of the hybridoma cell line is named as hybridoma cell line 4A1, and the hybridoma cell line was deposited on Apr. 1, 2019 in the China Center for Type Culture Collection, Wuhan University, Wuhan, China, with a deposit number CCTCC NO: C201947. The monoclonal antibody prepared by the hybridoma cell line has high titer, good specificity and excellent biological characteristics. The present invention identifies the variant antigen epitope recognized by the RABV M protein, the hybridoma cell line can be used to distinguish Flury strain and other RABV strains, prepare kit for detecting rabies virus RABV, detect RABV infection and differential diagnosis vaccine Flury strain and other RABV strains.
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公开(公告)号：US20230124500A1
公开(公告)日：2023-04-20
申请号：US18084550
申请日：2022-12-20
申请人： ZHEJIANG UNIVERSITY
发明人： Yan YAN , Shujing LI , Zhen ZHANG , Tingna SHI , Peng SONG
摘要： A method for model predictive current control of a two-motor torque synchronization system, which belongs to the field of power electronics and motor control. The present disclosure takes an indirect matrix converter and a two-motor system which are coaxially and rigidly connected as a target, and takes two-motor torque synchronization performance and current tracking performance as main control objectives. A two-motor unified prediction model is established and a value function based on free components of error items is configured so as to solve the problems in which when model predictive current control is performed on a two-motor system, setting of a value function weighting coefficient needs to be performed manually, and consequently the setting process is complicated and an erroneous switch state combination is likely to be selected.
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公开(公告)号：US20220224249A1
公开(公告)日：2022-07-14
申请号：US17607404
申请日：2020-05-22
申请人： ZHEJIANG UNIVERSITY
发明人： Tingna SHI , Huan YAO , Yan YAN , Guozheng ZHANG , Zhiqiang WANG , Changliang XIA
IPC分类号： H02M7/5387 , H02M1/00 , H02M7/483
摘要： The invention proposed a space vector pulse width modulation (SVPWM) method for any level cascaded H-bridge inverter. The multilevel space vector diagram is re-divided, and the coordinates of the nearest three vectors (NTVs) are directly obtained by judging the position of the reference vector. The duty cycles of the NTVs is calculated through additional vector which is equivalent to the reference vector. Then, the switching states are obtained by zero-sequence component and coordinate transformation, and the desired reference vector is synthesized for the SVPWM modulation. The invention realizes multilevel modulation in Cartesian coordinates without any iterative calculation, and the calculation is independent of the level number. Furthermore, the locating of the reference vector and the calculation of the duty cycles are simplified, and the calculation complexity is reduced.
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