发明公开
- 专利标题： A method of monitoring a transmission assembly of a vehicle equipped with acceleration sensors, in particular a helicopter
- 专利标题（中）： 用于监视与加速度传感器的车辆变速器，特别是用于直升机方法
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申请号： EP98112392.0申请日： 1998-07-03
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公开(公告)号： EP0889313A2公开(公告)日： 1999-01-07
- 发明人: Maino, Bruno , Bellazzi, Alberto
- 申请人： FINMECCANICA S.p.A.
- 申请人地址： Piazza Monte Grappa, 4 00195 Roma IT
- 专利权人： FINMECCANICA S.p.A.
- 当前专利权人： FINMECCANICA S.p.A.
- 当前专利权人地址： Piazza Monte Grappa, 4 00195 Roma IT
- 代理机构： Cerbaro, Elena
- 优先权： ITTO970591 19970704
- 主分类号： G01M13/02
- IPC分类号： G01M13/02
摘要：
The monitoring method includes the steps of: acquiring a first signal ( s(t) ) from an acceleration sensor; calculating a transform in the frequency domain of the first signal ( s(t) ) to obtain an initial sequence of samples ( S 1 ), each of the samples having a respective amplitude and a respective frequency; processing the initial sequence of samples ( S 1 ) to obtain a final sequence of samples ( S 3 ); calculating a sixth-order moment ( M6A ) of the final sequence of samples ( S 3 ); and comparing the sixth-order moment ( M6A ) with at least one predetermined threshold ( TH1 ) to detect any vibrational irregularity in the helicopter transmission assembly.
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