Electromagnetic type quasi-zero stiffness absolute displacement sensor

    公开(公告)号:US10753770B2

    公开(公告)日:2020-08-25

    申请号:US16183512

    申请日:2018-11-07

    IPC分类号: G01D5/20 G01H11/02

    摘要: An electromagnetic type quasi-zero stiffness absolute displacement sensor that includes an intermediate shaft, upper end cover, first sliding bearing arranged on the upper end cover, upper housing fixedly connected to the upper end cover, electromagnetic coil fastened onto an inner wall of the upper housing, spiral spring, spring support connected to a lower end of the spiral spring, force sensor fastened onto a lower end surface of the spring support, lower end cover fastened onto lower end surface of the force sensor, and a lower housing connected to the lower end cover; the intermediate shaft sequentially passes through, from top down, the first sliding bearing, upper end cover, and electromagnetic coil, and is connected to an upper end of the spiral spring; and the upper housing is provided therein with a ring permanent magnet that is nested on the intermediate shaft and is not in contact with the electromagnetic coil.

    Triboelectric nanogeneration module, and combined wind turbine and method thereof

    公开(公告)号:US11598315B2

    公开(公告)日:2023-03-07

    申请号:US17324340

    申请日:2021-05-19

    摘要: 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.

    TRIBOELECTRIC NANOGENERATION MODULE, AND COMBINED WIND TURBINE AND METHOD THEREOF

    公开(公告)号:US20220205427A1

    公开(公告)日:2022-06-30

    申请号:US17324340

    申请日:2021-05-19

    摘要: 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.

    Signal conditioning system for improving low-frequency measurement performance of acceleration sensor

    公开(公告)号:US11726108B2

    公开(公告)日:2023-08-15

    申请号:US17754368

    申请日:2021-08-27

    IPC分类号: G01P21/00

    CPC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.

    Afterload device for ex situ heart perfusion

    公开(公告)号:US11596147B2

    公开(公告)日:2023-03-07

    申请号:US16910930

    申请日:2020-06-24

    IPC分类号: A01N1/02

    摘要: 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.

    STEWART VIBRATION ISOLATION PLATFORM WITH MACRO FIBER COMPOSITE PLATES AND CONTROL METHOD THEREOF

    公开(公告)号:US20220282766A1

    公开(公告)日:2022-09-08

    申请号:US17687415

    申请日:2022-03-04

    IPC分类号: F16F15/00 F16F15/08

    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.

    AFTERLOAD DEVICE FOR EX SITU HEART PERFUSION

    公开(公告)号:US20210037811A1

    公开(公告)日:2021-02-11

    申请号:US16910930

    申请日:2020-06-24

    IPC分类号: A01N1/02

    摘要: 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.

    Electromagnetic-piezoelectric composite vibration control device based on synchronized switch damping technology

    公开(公告)号:US11489104B2

    公开(公告)日:2022-11-01

    申请号:US16683478

    申请日:2019-11-14

    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.