发明公开
- 专利标题： 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
-
申请号： EP98112404.3申请日： 1998-07-03
-
公开(公告)号： EP0889314A2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： ITTO970590 19970704
- 主分类号： G01M13/02
- IPC分类号： G01M13/02
摘要：
The monitoring method includes the steps of: acquiring a signal ( s(t) ) from an acceleration sensor; calculating a transform in the frequency domain of the signal ( s(t) ) to obtain a sequence of samples; acquiring a sample ( F(2) ) in the sequence of samples; calculating an actual amplitude value ( C2 ) of the acquired sample ( F(2) ); calculating a relative deviation ( RC2 ) between the actual amplitude value ( C2 ) of the acquired sample ( F(2) ) and a reference amplitude value ( C2 ref ); and comparing the relative deviation ( RC2 ) with at least one predetermined threshold ( TH1 ) to immediately detect any irregularity in, and so prevent in-flight failure of, the helicopter transmission assembly.
公开/授权文献
信息查询
