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    Electro-vibration Coupled Stress Relief System and Method for Eliminating Residual Stress Using the Same
    1.
    发明公开
    Electro-vibration Coupled Stress Relief System and Method for Eliminating Residual Stress Using the Same 审中-公开

    公开(公告)号：US20240279765A1

    公开(公告)日：2024-08-22

    申请号：US18112891

    申请日：2023-02-22

    申请人： Shanghai Maritime University

    发明人： Bangping Gu ,  Jingshu Zhuo ,  Zidi Jin ,  Liqiang Gao ,  Yongli Hu ,  Xiong Hu ,  Zilin Zhang ,  Chuanxiao Yang ,  Junshuo Wang

    IPC分类号： C21D10/00 ,  G05D19/02

    CPC分类号： C21D10/00 ,  G05D19/02

    摘要： The present invention discloses an electro-vibration coupled stress relief system, comprising a host computer, an arbitrary waveform card, a power amplifier, an electromagnetic exciter, an energy amplification device, an acceleration sensor, a charge amplifier, an oscilloscope, a power module, a charging module, an electric energy storage module, a discharge module, a pulse current sampling measurement module and a copper electrode. The present invention also discloses a method for eliminating residual stress, comprising the following steps: obtaining the natural frequencies of bending vibration of different orders by numerical modal analysis; fixing the metal structure; discharging the metal structure to generate high-energy electrical pulses by opening the charging switch and closing the discharge switch; inputting the analog excitation signal output by the arbitrary waveform card into the electromagnetic exciter via the power amplifier and driving the electromagnetic exciter to generate high-frequency vibration.

    Prediction of machine failure based on vibration trend information
    4.
    发明授权
    Prediction of machine failure based on vibration trend information 有权

    公开(公告)号：US11573153B2

    公开(公告)日：2023-02-07

    申请号：US16546385

    申请日：2019-08-21

    申请人： Computational Systems, Inc.

    发明人： John S. Turner ,  Robert D. Skeirik

    IPC分类号： G01M13/045 ,  G01H1/00 ,  G07C3/06 ,  G05B23/02 ,  G05D19/02

    摘要： A method for detecting defects in a rotational element of a machine based on changes in measured vibration energy includes: (a) collecting vibration data over an extended period of time using vibration sensors attached to the machine; (b) processing the vibration data to generate a time waveform comprising processed vibration values sampled during sequential sampling time intervals within the extended period of time; (c) detecting multiple time blocks within the extended period of time during which the processed vibration values exhibit sustained increases at progressively increasing rates; and (d) generating alerts based on detection of the multiple time blocks during which the processed vibration values exhibit sustained increases at progressively increasing rates. The multiple time blocks may include a first time block during which the processed vibration values increase at a first rate, and a second time block occurring after the first time block during which the processed vibration values increase at a second rate that is greater than the first rate.

    Variable rotary mass vibration suppression system
    5.
    发明授权
    Variable rotary mass vibration suppression system 有权

    公开(公告)号：US11555528B2

    公开(公告)日：2023-01-17

    申请号：US16500715

    申请日：2018-03-30

    申请人： Moog Inc.

    发明人： John Kopp

    IPC分类号： F16F15/22 ,  B06B1/16 ,  B63H21/30 ,  B64C27/00 ,  F16F7/10 ,  G05D19/02

    摘要： A vibration suppression unit for an aircraft comprising a vibration control frame adapted to be mounted to the aircraft and to rotate about a central axis, a first motor configured to rotate the vibration control frame about the central axis, a second motor configured to rotate a first and second center of mass about a first and second axis or rotation, a third motor configured to adjust a variable distance between the first and second centers of mass and the first and second axis of rotation, respectively, and a controller for receiving input signals and outputting command signals to the first, second and third motors.

    VIBRATION CONTROL DEVICE AND VIBRATION CONTROL METHOD
    9.
    发明申请
    VIBRATION CONTROL DEVICE AND VIBRATION CONTROL METHOD 有权

    公开(公告)号：US20210223803A1

    公开(公告)日：2021-07-22

    申请号：US17148795

    申请日：2021-01-14

    申请人： OKUMA Corporation

    发明人： Masashi MIYAJI

    IPC分类号： G05D19/02 ,  G05B19/404

    摘要： There are disclosed a vibration control device and a vibration control method that control shaft torsional vibration and machine stand vibration without installing a special sensor or measurement instrument. A vibration control device includes an amplification factor change unit that changes an amplification factor of an amplification unit used for amplifying a deviation between a command value and a detection value in a servo amplifier, a vibration detection unit that measures the frequency and the amplitude of vibration superimposed on a moving part, and a filter change unit that changes a filter based on the frequency and the amplitude detected by the vibration detection unit.