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    • 8. 发明公开
    • 유성기어의 진동신호 추출 장치 및 추출 방법
    • 用于行星齿轮振动信号提取的装置和方法
    • KR1020150137868A
    • 2015-12-09
    • KR1020140066476
    • 2014-05-30
    • 서울대학교산학협력단
    • 윤병동하종문
    • G01H17/00G01M13/02
    • G01H17/00G01M13/021G06F17/10
    • 본발명에따른유성기어의진동신호추출장치는유성기어박스의목표유성기어및 링기어의맞물림행렬을생성하는전처리부, 리샘플링된진동신호에자기상관(Autocorrelation) 함수를적용하여신호추출윈도우함수를산출하는윈도우함수산출부및 산출된신호추출윈도우함수를리샘플링된진동신호에적용하여윈도잉(Windowing)된진동신호를추출하고, 추출된윈도잉된진동신호에시간동기평균(Time Synchronous Averaging, TSA) 기법을적용하여랜덤노이즈를제거한후, 랜덤노이즈가제거된윈도잉된진동신호에서신호추출윈도우함수를제거하여목표유성기어의진동신호를추출하는목표신호산출부를포함한다.
    • 根据本发明的实施例,用于行星齿轮的振动信号提取装置包括:预处理单元,其在行星齿轮箱中产生目标行星齿轮和齿圈的网格矩阵; 窗口函数计算单元,其将自相关函数应用于重采样的振动信号以计算信号提取窗函数; 以及目标信号计算单元,其通过将计算出的信号提取窗函数应用于重采样的振动信号来提取窗口振动信号,对所提取的和窗口化的振动信号应用时间同步平均(TSA)技术以去除随机噪声,并且去除 从具有随机噪声的窗口振动信号中提取信号提取窗函数,以便提取目标行星齿轮的振动信号。
    • 9. 发明授权
    • 외부가진에 의한 전기접점의 안정성 테스터
    • 电气触点稳定性试验
    • KR101293238B1
    • 2013-08-09
    • KR1020120110063
    • 2012-10-04
    • 서울대학교산학협력단
    • 윤병동박영우박경민
    • G01R31/327
    • PURPOSE: A stability tester of an electric contact by external excitation is provided to perform electric contact stability test which complies with environmental condition of a real system. CONSTITUTION: A stability tester of an electric contact by external excitation includes an upper base (200), a first moving stage (310), a second moving stage (320) and a vibration generator (440). The upper base is combined to the upper part of a base elastic blade (110) and is installed separately in the upper part of a lower base (100), and is supported only by the base elastic blade. The first moving stage is combined to the upper part of a first elastic blade (210) and is installed separately in the upper part of the upper base, and is supported only by the first elastic blade. The second moving stage is combined to the upper part of a second elastic blade (220) and is installed separately in the upper part of the upper base, and is supported only by the first elastic blade. The vibration generator is installed in the lower base and is combined to one side end of the upper base, and vibrates the upper base.
    • 目的:提供外部激励电触点的稳定性测试仪,以实现符合实际系统环境条件的电接触稳定性测试。 构成:通过外部激励的电接触的稳定性测试器包括上基座(200),第一移动台(310),第二移动台(320)和振动发生器(440)。 上基部组合到基部弹性叶片110的上部,并分别安装在下基部100的上部,仅由基部弹性叶片支撑。 第一移动台组合到第一弹性叶片210的上部,并分别安装在上基座的上部,仅由第一弹性叶片支撑。 第二移动台组合到第二弹性叶片(220)的上部,并且分开地安装在上基部的上部中,并且仅由第一弹性叶片支撑。 振动发生器安装在下基座中,并组合在上基座的一侧,并振动上基座。