Patents by Inventor Huayan PU

Huayan PU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11808317
    Abstract: A squeeze mode giant electrorheological fluid damper is disclosed. The squeeze mode giant electrorheological fluid damper comprises a support, a container and a connecting structure, wherein the support comprises a bottom plate, guide shafts and a top plate, the guide shaft is vertically fixed on the bottom plate, and the top plate is slidably arranged on the guide shaft; the container comprises a container body and two spiral spring pieces coaxially arranged in the container body, the container body is fixed on the bottom plate, the bottoms of the two spiral spring pieces are fixed to the bottom of the container, the two spiral spring pieces are not in contact with each other and are spaced by 180°; the top of the connecting structure is fixedly connected with the top plate, and the bottom of the connecting structure is fixedly connected with the tops of the two spiral spring pieces.
    Type: Grant
    Filed: August 23, 2022
    Date of Patent: November 7, 2023
    Assignee: Shanghai University
    Inventors: Yi Sun, Ben Lu, Huayan Pu, Min Wang, Jiheng Ding, Wenchuan Jia, Yan Peng, Jun Luo
  • Patent number: 11808319
    Abstract: A horizontally arranged six-degree-of-freedom constant-stiffness mechanism is provided, and includes an upper platform, a bottom plate, three composite spherical hinges, spherical hinges, support rods, guide rail slider assemblies, and six electromagnetic adjustable stiffness units. Two ends of a shaft on which a permanent magnet is fixed in each electromagnetic adjustable stiffness unit are fixed to the bottom plate via shaft supports. Axially moving housings of electromagnetic adjustable stiffness units are fixed on sliders of the guide rail slider assemblies via slider backing plates respectively. Guide rail slider assembles are fixed on the bottom plate. Tops of the housings are mounted with the spherical hinges respectively. A bottom of the upper platform is uniformly mounted with the composite spherical hinges. One end of each support rod is threadedly connected to a corresponding one of the spherical hinges, and another end is connected with a corresponding one of composite spherical hinges.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: November 7, 2023
    Assignees: Chongqing University, Shanghai University
    Inventors: Huayan Pu, Tong Wang, Qimin Li, Jinglei Zhao, Jun Luo, Jie Ma
  • Publication number: 20230341869
    Abstract: The present disclosure provides a method and system for path planning of an unmanned vehicle in a three-dimensional terrain and relates to the technical field of path planning. The method includes building a random tree with an initial point of a to-be-planned path as a node; generating a random node based on a goal bias strategy and a multi-sampling strategy; determining a node in the random tree and with a minimum two-dimensional distance from the random node as a nearest node; determining a direction from the nearest node to the random node as an extension direction; determining a point corresponding to a preset step length as a to-be-determined node in the extension direction with the nearest node as a starting point; and updating the random tree or determining a path cut-off random tree through elevation detection and path search cut-off detection, so as to determine the to-be-planned path.
    Type: Application
    Filed: January 13, 2023
    Publication date: October 26, 2023
    Applicants: CHONGQING UNIVERSITY, SHANGHAI UNIVERSITY
    Inventors: Jun LUO, Lele DING, Huayan PU, Jie MA, Xuyang ZHENG, Hongliang LIU, Jing HUANG, Yongbing CHEN, Anming SHEN
  • Publication number: 20230332666
    Abstract: Disclosed is an active control Stewart vibration damping platform, including a load-bearing platform, a base, and six telescopic rods. Each telescopic rod includes a driving motor, a rotating shall, a sleeve, and a moving rod. One end, away from the driving motor, of the rotating shaft is provided with a cylindrical cavity, one end of the moving rod penetrates through the cylindrical cavity, and the sleeve is sleeved outside the rotating shall. The rotating shaft is in running lit with the sleeve through a first bearing, and the moving rod is in sliding fit with the sleeve through a second bearing. The moving rod and the rotating shaft are respectively provided with a spiral permanent magnet. The spiral permanent magnet on the rotating shaft can drive the moving rod to move in an axial direction of the rotating shaft through the spiral permanent magnet on the moving rod when rotating.
    Type: Application
    Filed: April 14, 2023
    Publication date: October 19, 2023
    Inventors: Huayan Pu, Zhi Sun, Jun Luo, Jinglei Zhao, Jin Yi, Yi Qin, Shujin Yuan
  • Patent number: 11752819
    Abstract: A wheel-legged amphibious mobile robot with a variable attack angle, which belongs to the technical field of robot structure technology. The robot includes three parts: motion unit, body trunk and power unit. As a key structure, the motion unit mainly includes a moving mechanism, a wheel assembly, a telescopic mechanism and a transmission device. The robot drives the telescopic mechanism to reciprocate linearly through a gear and rack set, and pushes “legs” to expand and retract, so as to realize a mutual switching between a wheeled mode and a gait mode. Under transmission of bevel gear set, the blades can rotate at any same angle at the same time, to change the attack angle and realize the steering. The robot provided by the present disclosure can effectively adapt to a complex and harsh amphibious environment, and meet a series of operation requirements such as rapid movement, obstacle climbing, underwater steering.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: September 12, 2023
    Assignee: SHANGHAI UNIVERSITY
    Inventors: Yi Sun, Longteng Zhang, Huayan Pu, Min Wang, Yan Peng, Jiheng Ding, Jun Luo, Shaorong Xie
  • Patent number: 11726108
    Abstract: The present disclosure relates to a signal conditioning system for improving low-frequency measurement performance of an acceleration sensor. The signal conditioning system includes: a charge integration circuit, a high-pass filter circuit, a lead-lag network, an anti-aliasing filter circuit, and a gain adjustment circuit. An input terminal of the charge integration circuit is connected to the acceleration sensor, an output terminal of the charge integration circuit is connected to an input terminal of the high-pass filter circuit, an output terminal of the high-pass filter circuit is connected to an input terminal of the lead-lag network, an output terminal of the lead-lag network is connected to an input terminal of the anti-aliasing filter circuit, and an output terminal of the anti-aliasing filter circuit is connected to an input terminal of the gain adjustment circuit.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: August 15, 2023
    Assignee: Shanghai University
    Inventors: Huayan Pu, Peng Jiang, Jiheng Ding, Yi Sun, Min Wang, Yan Peng, Jun Luo, Shaorong Xie
  • Patent number: 11692607
    Abstract: A magnetic suspension type sensing system for space full-degree-of-freedom absolute poses is provided. The system includes a reference platform, multiple quasi-zero stiffness supporting legs and a platform to be tested. The reference platform and the platform to be tested are connected in a spherical hinge mode through the multiple quasi-zero stiffness supporting legs. Each of the multiple quasi-zero stiffness supporting legs includes a lower end spherical hinge, a lower end cover, a positive stiffness unit, a negative stiffness unit, a shaft, a lower end shell, an upper end shell and an upper end spherical hinge.
    Type: Grant
    Filed: November 26, 2021
    Date of Patent: July 4, 2023
    Assignees: Chongqing University, SHANGHAI UNIVERSITY
    Inventors: Huayan Pu, Yan Jing, Jinglei Zhao, Jun Luo, Yi Qin, Zhijiang Xie, Jie Ma
  • Publication number: 20230141864
    Abstract: The present disclosure provides a method for predicting a remaining useful life (RUL) of an aero-engine, specifically including: acquiring multidimensional degradation parameters of an aero-engine to be predicted to obtain acquired data; segmenting the acquired data by a sliding window (SW) to obtain preprocessed data; constructing a RUL prediction model of the aero-engine including a multibranch convolutional neural network (MBCNN) model, a multicellular bidirectional long short-term memory (MCBLSTM) model, a fully connected (FC) layer FC1, and a regression layer; taking the preprocessed data as input data of the MBCNN model, extracting an output of the MBCNN model, taking the output of the MBCNN model and recursive data as input data of the MCBLSTM model, and extracting an output of the MCBLSTM model; obtaining an output of the FC layer FC1, and inputting the output of the FC layer FC1 to the regression layer to predict a RUL.
    Type: Application
    Filed: October 24, 2022
    Publication date: May 11, 2023
    Applicant: Chongqing University
    Inventors: Yi QIN, Sheng XIANG, Jun LUO, Huayan PU, Quan QIAN
  • Publication number: 20230074188
    Abstract: A negative stiffness generating mechanism and a quasi-zero stiffness vibration isolator are provided. A housing is mounted on a base, and the axial relative positions of the housing and the base can be adjusted; a negative stiffness unit comprises inner-ring magnets, outer-ring magnets and a supporting shaft, the supporting shaft axially slides on the base and passes through the housing, the inner-ring magnets fixedly sleeve the supporting shaft, and the outer-ring magnets sleeve outside the inner-ring magnets and are divided into upper and lower groups of outer-ring magnets; the upper and lower groups of outer-ring magnets can synchronously move through a negative stiffness adjusting device; and the axial relative positions of the middle planes of the outer-ring and inner-ring magnets can be adjusted by adjusting the axial relative positions of the housing and the base. The isolator comprises a negative stiffness generating mechanism and a positive stiffness unit.
    Type: Application
    Filed: March 17, 2022
    Publication date: March 9, 2023
    Inventors: Jun LUO, Xu CHEN, Huayan PU, Jinglei ZHAO, Yan JING
  • Patent number: 11598315
    Abstract: A triboelectric nanogeneration module, and a combined wind turbine and a method thereof. The triboelectric nanogeneration module includes a rotating disc, and moving friction plates and fixed friction plates that are oppositely arranged outside the radial direction of the rotating disc. A nano-friction material layer is arranged on the surface of each of the moving friction plates and the fixed friction plates. Driving devices are arranged on the rotating disc in the circumferential direction at intervals. The driving devices are used for extruding the moving friction plates to move to the positions at which the moving friction plates are in contact with the fixed friction plates. The moving friction plates are connected to reset devices used for separating the moving friction plates from the fixed friction plates. The moving friction plates perform straight reciprocating movement under the action of the driving devices and the reset devices.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: March 7, 2023
    Assignee: Shanghai University
    Inventors: Yan Peng, Chuanfu Xin, Zhongjie Li, Jun Luo, Shaorong Xie, Huayan Pu
  • Patent number: 11596147
    Abstract: The present invention discloses an afterload device for ex situ heart perfusion, which includes an afterload energy storage module, a pressure regulation module and two flow rate regulators that are connected through a conduit. The afterload energy storage module includes a rigid closed container and a flexible container. The perfusion fluid flows into the flexible container from one side thereof through the conduit, and the perfusion fluid flows out from the flexible container at another side thereof as the flexible container is subjected to the action of the medium pressure in the rigid hermetic container. The pressure regulation module includes two pressure regulation valves and a compressible-medium source, for regulating the pressure range within the rigid hermetic container to be always maintained between the set diastolic pressure and the set systolic pressure.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: March 7, 2023
    Assignee: Shanghai University
    Inventors: Yan Peng, Zhibing Xu, Liming Xin, Jun Luo, Shaorong Xie, Huayan Pu, Shouwei Gao, Mitesh Badiwala, Yu Sun
  • Publication number: 20230062689
    Abstract: A squeeze mode giant electrorheological fluid damper is disclosed. The squeeze mode giant electrorheological fluid damper comprises a support, a container and a connecting structure, wherein the support comprises a bottom plate, guide shafts and a top plate, the guide shaft is vertically fixed on the bottom plate, and the top plate is slidably arranged on the guide shaft; the container comprises a container body and two spiral spring pieces coaxially arranged in the container body, the container body is fixed on the bottom plate, the bottoms of the two spiral spring pieces are fixed to the bottom of the container, the two spiral spring pieces are not in contact with each other and are spaced by 180°; the top of the connecting structure is fixedly connected with the top plate, and the bottom of the connecting structure is fixedly connected with the tops of the two spiral spring pieces.
    Type: Application
    Filed: August 23, 2022
    Publication date: March 2, 2023
    Applicant: Shanghai University
    Inventors: Yi Sun, Ben Lu, Huayan Pu, Min Wang, Jiheng Ding, Wenchuan Jia, Yan Peng, Jun Luo
  • Publication number: 20230045158
    Abstract: A magnetic suspension type sensing system for space full-degree-of-freedom absolute poses is provided. The system includes a reference platform, multiple quasi-zero stiffness supporting legs and a platform to be tested. The reference platform and the platform to be tested are connected in a spherical hinge mode through the multiple quasi-zero stiffness supporting legs. Each of the multiple quasi-zero stiffness supporting legs includes a lower end spherical hinge, a lower end cover, a positive stiffness unit, a negative stiffness unit, a shaft, a lower end shell, an upper end shell and an upper end spherical hinge.
    Type: Application
    Filed: November 26, 2021
    Publication date: February 9, 2023
    Inventors: Huayan Pu, Yan Jing, Jinglei Zhao, Jun Luo, Yi Qin, Zhijiang Xie, Jie Ma
  • Patent number: 11573101
    Abstract: Disclosed is a quasi-zero stiffness absolute displacement sensor based on electromagnetic positive stiffness, and relates to the technical field of vibration measurement. The quasi-zero stiffness absolute displacement sensor comprises an eddy current displacement sensor unit, a negative stiffness unit, an intermediate connector, a positive stiffness unit, a bottom shell and a motion axis. The damping of the mechanism can be effectively reduced, the service life of the system is prolonged, and the mechanism size is reduced. By adjusting the number of layers of permanent magnets and coils in the electromagnetic positive stiffness unit and the electromagnetic negative stiffness unit and controlling the magnitude of current in the coils, electromagnetic force between the permanent magnets and the electromagnetic coils can be changed, the magnitude of positive stiffness and the magnitude of negative stiffness are adjusted, and control over the stiffness of the whole system is achieved.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: February 7, 2023
    Inventors: Huayan Pu, Yan Jing, Jinglei Zhao, Jun Luo, Yi Qin, Zhijiang Xie, Jie Ma
  • Publication number: 20220404172
    Abstract: Disclosed is a quasi-zero stiffness absolute displacement sensor based on electromagnetic positive stiffness, and relates to the technical field of vibration measurement. The quasi-zero stiffness absolute displacement sensor comprises an eddy current displacement sensor unit, a negative stiffness unit, an intermediate connector, a positive stiffness unit, a bottom shell and a motion axis. The damping of the mechanism can be effectively reduced, the service life of the system is prolonged, and the mechanism size is reduced. By adjusting the number of layers of permanent magnets and coils in the electromagnetic positive stiffness unit and the electromagnetic negative stiffness unit and controlling the magnitude of current in the coils, electromagnetic force between the permanent magnets and the electromagnetic coils can be changed, the magnitude of positive stiffness and the magnitude of negative stiffness are adjusted, and control over the stiffness of the whole system is achieved.
    Type: Application
    Filed: April 29, 2022
    Publication date: December 22, 2022
    Inventors: Huayan PU, Yan JING, Jinglei ZHAO, Jun LUO, Yi QIN, Zhijiang XIE, Jie MA
  • Publication number: 20220399836
    Abstract: A normal-temperature heat engine power generation device based on a drinking bird is provided. The device includes a drinking bird body, a piezoelectric module and an electromagnetic module. The piezoelectric module includes a cantilever beam, a piezoelectric sheet arranged on the cantilever beam and working loads arranged at an end of the cantilever beam. when a head of the drinking bird body swings downwards, a tip of a beak can impact the working loads. The electromagnetic module includes magnets, coils and coil magnet conducting columns. The magnets are arranged at a bottom of a spherical bottom of the drinking bird body, and the coil magnet conducting columns sleeving the coils are arranged on a base of the drinking bird body.
    Type: Application
    Filed: August 31, 2021
    Publication date: December 15, 2022
    Inventors: Zhongjie LI, Xuzhang PENG, Yan PENG, Jun LUO, Shaorong XIE, Huayan PU
  • Publication number: 20220357358
    Abstract: The present disclosure relates to a signal conditioning system for improving low-frequency measurement performance of an acceleration sensor. The signal conditioning system includes: a charge integration circuit, a high-pass filter circuit, a lead-lag network, an anti-aliasing filter circuit, and a gain adjustment circuit. An input terminal of the charge integration circuit is connected to the acceleration sensor, an output terminal of the charge integration circuit is connected to an input terminal of the high-pass filter circuit, an output terminal of the high-pass filter circuit is connected to an input terminal of the lead-lag network, an output terminal of the lead-lag network is connected to an input terminal of the anti-aliasing filter circuit, and an output terminal of the anti-aliasing filter circuit is connected to an input terminal of the gain adjustment circuit.
    Type: Application
    Filed: August 27, 2021
    Publication date: November 10, 2022
    Inventors: Huayan Pu, Peng Jiang, Jiheng Ding, Yi Sun, Min Wang, Yan Peng, Jun Luo, Shaorong Xie
  • Patent number: 11493107
    Abstract: The present disclosure provides a single-degree-of-freedom (SDOF) magnetic damping shock absorber based on an eddy current effect, comprising a lower plate, a ring-shaped magnet a, a ring-shaped magnet b, an aluminum cylinder, a bottom copper sheet, a copper sheet, a top copper sheet, a bearing seat, a linear bearing, a bearing end cap, a load, a piston shaft, a stepped shaft, a fixed collar, a coil spring, a lower clamping shaft, and fixing screws. When the shock absorber is working, the ring-shaped magnet a keeps stationary at the lower end and the ring-shaped magnet b reciprocates in the vertical direction. Both magnets are arranged in a mutual attraction manner. Under the action of a time-varying electromagnetic field generated by the relative movement of the ring-shaped magnet b, the copper sheet arranged between the two ring-shaped magnets generates eddy current damping. The movement of the ring-shaped magnet b is inhibited.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: November 8, 2022
    Assignees: Shanghai University, Chongqing University
    Inventors: Huayan Pu, Wenyuan He, Wenjiang Wu, Min Wang, Jun Luo, Jiheng Ding, Yi Sun, Long Bai, Yan Peng, Shaorong Xie
  • Patent number: 11486461
    Abstract: Disclosed is a self-powered vibration damper based on piezoelectricity and a control method. The damper comprises a loading platform, an energy collecting mechanism, a curved leaf spring, a vibration control mechanism and a substrate all connected in sequence, the circuit system comprises a rectifier circuit, a DC-DC voltage conversion circuit, an energy storage circuit, a control circuit and a charging battery, a first piezoelectric stack is connected with the input end of the rectifier circuit, the output end of the rectifier circuit is connected with the input end of the DC-DC voltage conversion circuit, the output end of the DC-DC voltage conversion circuit is connected with the input ends of the energy storage circuit and the charging battery, the output end of the energy storage circuit is connected with the input end of the control circuit, the output end of the control circuit is connected with the second piezoelectric stack.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: November 1, 2022
    Assignee: Shanghai University
    Inventors: Min Wang, Dong Zhang, Jun Luo, Huayan Pu, Yi Sun, Chaoqun Duan, Shunqi Zhang, Yan Peng, Shaorong Xie
  • Patent number: 11489104
    Abstract: An electromagnetic-piezoelectric composite vibration control device based on a synchronized switch damping technology is provided. An upper guiding component is installed inside the upper rigid frame, a lower guiding component is installed inside a lower rigid component, a guide rod is nested inside the upper guiding component and the lower guiding component, an upper idler wheel mechanism and a lower idler wheel mechanism are fixedly sleeved on the guide rod and are positioned between the upper guiding component and the lower guiding component respectively, an electromagnetic mechanism is fixedly sleeved outside the guide rod, one end of each piezoelectric cantilever beam is fixed between the upper rigid frame and the lower rigid frame, the other end is arranged between the upper idler wheel mechanism and the lower idler wheel mechanism, and the piezoelectric cantilever beams and the electromagnetic mechanism are connected with a circuit system respectively.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: November 1, 2022
    Assignee: Shanghai University
    Inventors: Huayan Pu, Dong Zhang, Min Wang, Jun Luo, Yi Sun, Chaoqun Duan, Shunqi Zhang, Yan Peng, Shaorong Xie