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1.发明申请公开(公告)号：US20220282766A1
公开(公告)日：2022-09-08
申请号：US17687415
申请日：2022-03-04
申请人： Shanghai University
发明人： Huayan Pu , Xuan Fang , Min Wang , Yi Sun , Jiheng Ding , Yan Peng , Shaorong Xie , Jun Luo
摘要： The present disclosure discloses a Stewart vibration isolation platform with Macro Fiber Composite (MFC) plates. The vibration isolation platform includes: an upper load platform, a lower foundation platform, a controller, and a plurality of single-leg vibration isolation unit groups arranged between the upper load platform and the lower foundation platform. Each of the single-leg vibration isolation unit groups includes two single-leg vibration isolation units. The single-leg vibration isolation unit includes a first diaphragm spring and a second diaphragm spring. An MFC actuator and an MFC sensor are respectively arranged on two sides of the first diaphragm spring and the second diaphragm spring. The MFC actuators and the MFC sensors are all connected to the controller.
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公开(公告)号：US11489104B2
公开(公告)日：2022-11-01
申请号：US16683478
申请日：2019-11-14
申请人： Shanghai University
发明人： Huayan Pu , Dong Zhang , Min Wang , Jun Luo , Yi Sun , Chaoqun Duan , Shunqi Zhang , Yan Peng , Shaorong Xie
IPC分类号： H01L41/09 , F16F15/00 , H01L41/053
摘要： 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.
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公开(公告)号：US11486461B2
公开(公告)日：2022-11-01
申请号：US16711750
申请日：2019-12-12
申请人： Shanghai University
发明人： Min Wang , Dong Zhang , Jun Luo , Huayan Pu , Yi Sun , Chaoqun Duan , Shunqi Zhang , Yan Peng , Shaorong Xie
IPC分类号： F16F15/00 , F16F13/00 , H01L41/053 , H01L41/09 , H01L41/08 , F16F15/02 , H01L41/04 , H02J7/00 , H02N2/00
摘要： 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.
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公开(公告)号：US20200208711A1
公开(公告)日：2020-07-02
申请号：US16290258
申请日：2019-03-01
申请人： Shanghai University
发明人： Huayan Pu , Shujin Yuan , Yi Sun , Min Wang , Jun Luo , Yan Peng , Shaorong Xie , Yi Yang
摘要： The present invention discloses a stiffness-adjustable electromagnetic spring. The electromagnetic spring includes a central shaft, an intermediate electromagnetic force control component, and two end electromagnetic force control components, where the two end electromagnetic force control components and the intermediate electromagnetic force control component are both sleeved on the central shaft, and an intermediate controllable power supply in the intermediate electromagnetic force control component is used to control an electromagnetic force of an intermediate coil on a ring magnet and a two-end controllable power supply in the two end electromagnetic force control components are used to control an electromagnetic force on the ring magnet, therefore, the stiffness of the electromagnetic spring can be controlled online and the nonlinearity can be adjusted. The stiffness-adjustable electromagnetic spring disclosed in the present invention can generate adjustable negative stiffness to decrease the dynamic stiffness without reducing the static stiffness, thus break through the limitation of carrying capability of the spring on the vibration isolation performance, and has characteristics of compact structure, fast response, easy control.
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公开(公告)号：US20230062689A1
公开(公告)日：2023-03-02
申请号：US17893228
申请日：2022-08-23
申请人： Shanghai University
发明人： Yi Sun , Ben Lu , Huayan Pu , Min Wang , Jiheng Ding , Wenchuan Jia , Yan Peng , Jun Luo
IPC分类号： F16F13/00
摘要： 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.
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公开(公告)号：US20220357358A1
公开(公告)日：2022-11-10
申请号：US17754368
申请日：2021-08-27
申请人： Shanghai University
发明人： Huayan Pu , Peng Jiang , Jiheng Ding , Yi Sun , Min Wang , Yan Peng , Jun Luo , Shaorong Xie
IPC分类号： G01P21/00
摘要： 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.
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公开(公告)号：US11493107B2
公开(公告)日：2022-11-08
申请号：US17362996
申请日：2021-06-30
发明人： Huayan Pu , Wenyuan He , Wenjiang Wu , Min Wang , Jun Luo , Jiheng Ding , Yi Sun , Long Bai , Yan Peng , Shaorong Xie
摘要： 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.
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公开(公告)号：US11359692B2
公开(公告)日：2022-06-14
申请号：US16686449
申请日：2019-11-18
发明人： Jun Luo , Dong Zhang , Min Wang , Huayan Pu , Yi Sun , Chaoqun Duan , Shunqi Zhang , Yan Peng , Shaorong Xie
摘要： The present disclosure discloses a piezoelectric self-powered combination beam vibration damper and a control method thereof. An upper guiding component is installed inside an 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 elastic component is sleeved outside the upper idler wheel mechanism, a lower elastic component is sleeved outside the lower idler wheel mechanism, one end of each piezoelectric cantilever beam is fixed between the upper rigid frame and the lower rigid frame, the other end of each piezoelectric cantilever beam is arranged between the upper idler wheel mechanism and the lower idler wheel mechanism, at least one piezoelectric cantilever beam is connected with the input end of a circuit system, and other piezoelectric cantilever beams are connected with the output end of the circuit system.
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公开(公告)号：US20220003532A1
公开(公告)日：2022-01-06
申请号：US17121648
申请日：2020-12-14
发明人： Huayan Pu , Jinglei Zhao , Jun Luo , Jiyun Zhao , Qinghua Kong , Jiheng Ding , Min Wang , Yi Sun , Zong Li , Long Bai , Yan Peng , Shaorong Xie
摘要： The present invention discloses a quasi-zero-stiffness (QZS) based six-degree-of-freedom (6-DOF) absolute displacement and attitude measurement device. A lower end coil and an upper end coil are respectively charged with currents in the opposite directions; The electromagnetic field and the magnetic fields of an upper magnet and a lower magnet per se are mutually acted to produce an electromagnetic stiffness opposite to the stiffness of a spring. The stiffness of the whole leg is close to zero stiffness. When the to-be-measured platform generates space motion, the reference platform is in the stationary state. At this point, the deformation amounts of the six legs can be measured by laser displacement sensors. The six deformation amounts are respectively inputted into the displacement and attitude resolver, and by forward kinematic solution of the 6-DOF device, the displacement and the attitude of the to-be-measured platform can be obtained.
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公开(公告)号：US20210091296A1
公开(公告)日：2021-03-25
申请号：US16683478
申请日：2019-11-14
申请人： Shanghai University
发明人： Huayan Pu , Dong Zhang , Min Wang , Jun Luo , Yi Sun , Chaoqun Duan , Shunqi Zhang , Yan Peng , Shaorong Xie
IPC分类号： H01L41/09 , F16F15/00 , H01L41/053
摘要： The present invention discloses an electromagnetic-piezoelectric composite vibration control device based on a synchronized switch damping technology, and relates to the technical field of vibration abatement. An upper rigid frame is arranged at the upper part of a lower rigid frame, 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, a load platform is fixed to the upper end of the guide rod, 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, an elastic component is sleeved outside the lower idler wheel mechanism, one end of each piezoelectric cantilever beam is fixed between the upper rigid frame and the lower rigid frame, the other end of each piezoelectric cantilever beam 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. The device is simple in structure and reliable in performance, a voltage source does not need to be provided externally, and the device is of an adaptive characteristic.
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