DYNAMIC RESPONSE ANALYSIS METHOD BASED ON DUAL-MODE EQUATION IN RANDOM NOISE ENVIRONMENT

    公开(公告)号:US20200226309A1

    公开(公告)日:2020-07-16

    申请号:US16647516

    申请日:2018-04-18

    Abstract: A dynamic response analysis method based on a dual-mode equation in a random noise environment includes the following steps: (1) dividing a structure and an acoustic cavity in an acoustic-structural coupling system into different subsystems; (2) calculating modes of the structural subsystems and the acoustic cavity subsystems; (3) calculating inter-mode coupling parameters in adjacent subsystems; (4) establishing a dual-mode equation of the coupling system; (5) by means of pre-processing, obtaining a cross power spectrum of generalized force loads applied on the subsystem modes under the action of a random load; (6) calculating the dual-mode equation to obtain cross power spectra of all participation factors of all modes; and (7) by means of modal superposition, calculating a random acoustic-structural coupling response of the system.

    GRID ACCESS CURRENT CONTROL METHOD WITHOUT CURRENT SENSOR APPLICABLE TO GRID-CONNECTED INVERTER

    公开(公告)号:US20200220361A1

    公开(公告)日:2020-07-09

    申请号:US16627363

    申请日:2018-10-17

    Abstract: A grid access current control method without current sensor applicable to a grid-connected inverter relates to a system including a main circuit of the grid-connected inverter and a control circuit of the grid-connected inverter. The control circuit of the grid-connected inverter includes a grid access current open-loop control module and a PWM generation module; the grid access current open-loop control module includes a first proportional regulator, a second proportional regulator, a delayer, and an adder; input ends of the first proportional regulator and the second proportional regulator each are led out as an input end of a grid access current reference signal; and an output end of the first proportional regulator is connected to an input end of the adder; an output end of the second proportional regulator is connected to an input end of the delayer.

    Exoskeleton device for supporting anti-radiation protective clothing

    公开(公告)号:US10688654B2

    公开(公告)日:2020-06-23

    申请号:US16470565

    申请日:2017-11-16

    Abstract: An exoskeleton device for supporting anti-radiation protective clothing includes a shoulder mechanism, a waist mechanism and a leg mechanism. The shoulder mechanism includes a pair of back support rods, a fixed transverse rod and a guide member arranged between the back support rods, and a pair of flexible straps fixed to the back support rods. The waist mechanism includes waist support rods, a flexible waist strap installed on the waist support rods, and two straight cylindrical tension springs. The leg mechanism includes straight thigh support rods and automatic switching devices, with the straight thigh support rods being arranged at upper ends of the automatic switching devices, and the automatic switching devices being arranged between the straight thigh support rods and straight calf support rods.

    MINITYPE HAPTIC RENDERING METHOD BASED ON ACTIVE AND PASSIVE DEVICES

    公开(公告)号:US20200073472A1

    公开(公告)日:2020-03-05

    申请号:US16467984

    申请日:2018-05-23

    Abstract: The present invention discloses a minitype haptic rendering method based on active and passive devices, which comprises the following steps of: firstly, calibrating a magnetorheological damper and a direct current motor, and obtaining a relationship between an input current and an output torque; converting an expected force/torque value to a current input of the magnetorheological damper, outputting a corresponding torque through the magnetorheological damper, and applying the torque to a body of an operator through a haptic transmission device; secondly, measuring an actually applied force/torque by a sensor mounted at a force/torque application point, comparing an actually outputted force/torque value with the expected force/torque value, and calculating a force/torque error; and finally, converting the force/torque error to an input signal of the direct current motor, and driving the direct current motor to generate a torque corresponding to the error.

    mRNA-ENCODED NANOBODY AND APPLICATION THEREOF
    230.
    发明申请

    公开(公告)号:US20200024365A1

    公开(公告)日:2020-01-23

    申请号:US16484977

    申请日:2017-04-27

    Abstract: It relates to a nanobody encoded by a mRNA and an application thereof, and more particularly, to the field of nanobody drugs. In order to solve the problem above, the invention provides a novel concept and a method system for regulating an intracellular protein using an mRNA-encoding nanobody. The invention discloses a nanobody encoded by a mRNA, and encoding information carried by the mRNA is recognized, translated and expressed to a single-chain nanobody that can be bound to a targeting protein in a cell. By adopting the method, a function of a disease-related protein in a cell can be effectively and specifically interfered with, thus achieving the object of disease treatment.

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