公开(公告)号：US20230150114A1

公开(公告)日：2023-05-18

申请号：US17864338

申请日：2022-07-13

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Cai-Hua Xiong ,  Tao WANG ,  Di Hu ,  jie jun yi Liang ,  Yuhao Li ,  Tian-Cheng Zhou ,  Wen-Bin Chen

IPC: B25J9/00 ,  A61H1/02

CPC classification number: B25J9/0006 ,  A61H1/0266 ,  A61H2201/1642 ,  A61H2003/007

Abstract: A passive exoskeleton based on energy flow characteristics of a foot-ankle complex includes a first passive exoskeleton. The first passive exoskeleton includes an energy distribution mechanism, a strike-recipient mechanism and a wearing fixing assembly. The energy distribution mechanism is connected to the strike-recipient mechanism, and the energy distribution mechanism is also connected to the wearing fixing assembly. The energy distribution mechanism includes a ratchet wheel shaft, a left torsional spring, a right torsional spring and a middle guide wheel respectively sleeved on the ratchet wheel shaft. The middle guide wheel is connected to the wearing fixing assembly through an ankle joint power-assisted cord. The ratchet wheel shaft is connected to the strike-recipient mechanism, the strike-recipient mechanism drives the ratchet wheel shaft to rotate, and the ratchet wheel shaft drives the left torsional spring, the right torsional spring and the middle guide wheel to rotate.

公开(公告)号：US20230150122A1

公开(公告)日：2023-05-18

申请号：US17864355

申请日：2022-07-13

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Cai-Hua Xiong ,  Tao WANG ,  Di Hu ,  Jie Jun Yi Liang ,  Yuhao Li ,  Tian-Cheng Zhou ,  Wen-Bin Chen

IPC: B25J9/10 ,  B25J9/00

CPC classification number: B25J9/109 ,  B25J9/0006 ,  A61H3/00

Abstract: A clutch adapted for an exoskeleton includes lower and upper base plates, a roller, a roller ratchet ring, a trigger, a pawl, a pawl spring, a trigger torsional spring, a trigger positioning shaft, and a pawl positioning shaft. Two ends of the trigger positioning shaft are respectively connected to the upper and lower base plates. The trigger and the trigger torsional spring are sleeved on the trigger positioning shaft. Two ends of the trigger torsional spring are respectively connected to the lower base plate and the trigger. Two ends of the pawl positioning shaft are connected to the lower and upper base plates. The pawl spring and the pawl are respectively sleeved on the pawl positioning shaft. Two ends of the roller are rotatably connected to the lower and upper base plates. The pawl is detachably connected to the roller ratchet ring. The trigger is movably connected to the pawl.

公开(公告)号：US20190228129A1

公开(公告)日：2019-07-25

申请号：US16373606

申请日：2019-04-02

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Wenyu YANG ,  Kun HUANG ,  Yi GAO ,  Shuo QIU ,  Tao WANG ,  Guangdong CHENG ,  Kun YANG

IPC: G06F17/50 ,  G01L5/00

Abstract: The present invention belongs to the field of processing residual stress, and discloses a method for calculating processing parameters for residual stress control by parameter inversion. This method comprises: (a) extracting a characteristic index reflecting the residual stress distribution characteristic from a residual stress distribution curve; (b) respectively presetting initial values of processing parameters for residual stress control, calculating an initial value of the characteristic index, and drawing curves of the characteristic index over the respective processing parameters to obtain respective fitted curves; (c) respectively establishing a relation formula between respective characteristic index increment of the processing parameters and the fitting curve; and (d) assigning the values and performing inversion calculation to obtain the required processing parameters. The present invention is simple in operation, reduces the number of tests, lowers the production cost, improves the processing residual stress distribution of the workpiece and improves the anti-fatigue life of the components.

公开(公告)号：US20180248567A1

公开(公告)日：2018-08-30

申请号：US15965855

申请日：2018-04-28

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Daiming QU ,  Tao WANG ,  Tao JIANG

IPC: H03M13/29 ,  H03M13/11

CPC classification number: H03M13/2906 ,  H03M13/11 ,  H03M13/13

Abstract: An error-correction coding method based on concatenation of polar codes and repetition codes or multi-bit parity-check codes is proposed. The method includes: performing repetition coding or multi-bit parity-check coding on an information bit sequence, to yield an outer codeword; sequentially mapping a first bit to a last bit of the outer codeword on a first unfrozen bit to a last unfrozen bit of a polar code, to yield an unfrozen bit sequence; and performing polar coding on the unfrozen bit sequence, to yield a concatenated codeword.