公开(公告)号：US20190129044A1

公开(公告)日：2019-05-02

申请号：US16094474

申请日：2017-04-13

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xiyuan CHEN ,  Bingbo CUI ,  Wei WANG ,  Zhengyang ZHAO ,  Lin FANG

IPC: G01S19/47

Abstract: The present invention discloses a cubature Kalman filtering method suitable for high-dimensional GNSS/INS deep coupling, including: S1, constructing a high-dimensional GNSS/INS deep coupling filter model; S2, generating an initialization cubature point for the constructed filter model by using standard cubature rules; S3, performing CKF filtering by using novel cubature point update rules. The present invention is suitable for high-dimensional GNSS/INS deep coupling filtering with high precision and high stability.

公开(公告)号：US20240178768A1

公开(公告)日：2024-05-30

申请号：US18550652

申请日：2023-04-12

Applicant: SOUTHEAST UNIVERSITY

Inventor： Wei WANG ,  Weijie TIAN ,  Ming CHENG

IPC: H02P5/48 ,  H02P21/14 ,  H02P21/22 ,  H02P27/06

CPC classification number: H02P5/48 ,  H02P21/141 ,  H02P21/22 ,  H02P27/06

Abstract: A control method for a semi-centralized open winding multi-motor drive system includes: first, measuring current, voltage and position signal, computing system thrust by a velocity loop; then, distributing the thrust to each motor, converting the thrust into q axis current, computing dq axis voltages required for each motor by a current loop, and transforming the voltage demand to abc coordinate system through coordinate transformation; subsequently, modulating the voltage of each motor into a duty ratio instruction to judge whether the motor is in an over-modulated operating area, and performing over-modulation processing on the voltage in the over-modulated area; and finally, distributing the duty ratio instructions to independent and shared inverters. The control method of the present disclosure can reduce the hardware cost and improve the safety and reliability of the system.

公开(公告)号：US20200328689A1

公开(公告)日：2020-10-15

申请号：US16915524

申请日：2020-06-29

Applicant: CSMC TECHNOLOGIES FAB2 CO., LTD. ,  SOUTHEAST UNIVERSITY

Inventor： Shen XU ,  Wei WANG ,  Feng LIN ,  Boyong HE ,  Wei SU ,  Weifeng SUN ,  Longxing SHI

IPC: H02M3/335 ,  G01R19/165 ,  H03K5/24

Abstract: Provided is a dynamic control method that turns off a primary-side switching transistor when an output voltage exceeds an upper limit, and control the switching of a secondary-side synchronous rectification transistor with a fixed cycle and a fixed duty cycle. During the time that the synchronous rectification transistor is turned on, the energy of a load capacitor at the output end is extracted to the primary side, which causes the output voltage to drop rapidly and the overshoot voltage to decrease greatly.