1 (00084)!#$00085%&'&'&'&'*+,-.+/123679:;=?@ABCD@EFGHIJKLM=NOPLQ=RST=EFUVBWXYZ[\]^*+_`EFabcdefJ/aEgGhi#]jkalmi'nop_`q_`q_`q_`q:bcde=stfJ=/EgkuvwxkuvwxkuvwxkuvwxyTH7DesignofOn-lineMonitoringSystemfortheLarge-scaleRollingMillShenSongZhengZhaoChangYingHuaiQiao(Dept.ofMech.,TsinghuaUniv.,Beijing,100084)(ChinaOrientInstituteofNoise&Vibration,Beijing,100085)Abstract:Alarge-scalemillsystemincludesgearcasereductions,largeelectromotors,exhaustfans,etc.Theyhavecomplexstructure,largeandvaryingtransmissionpower,runningdiscontinuously,localeelectromagnetismdisturb,badworkenvironment.Thispaperintroducesthedesignoftheonlinemonitoringsystemtowardsalarge-scalecoolmill.Severalkeyproblemsarediscussedindetail.Keywords:on-linemonitoring;failurediagnosis;systemdesign}}}}~~~~*.+EFabcde/'_`@EFaLMa /gvdeadeEFaLMbEFLM2stGMfJpbcde/EFa ¡d¢£^¤¥¦s§¨©2ª«¬YIi'®¯EFa¦°±²,´gµa¶¤±² ·¸a¶¹±²aºOp2.2.2.2.EFW½stvEFW½stvEFW½stvEFW½stv+a_`@EF1236y79:;=?@=@.¾¿ÀA=ÁÂABpÃÄEFÅ¡Æ+,aÇaÈÉÊJKLQaËÌÍÎÏCÐaÑÒÏGÓLQÏkÔÊHIÕ´aNOPvÖDEFa×ØÙUVÚÛÜÝÞßa@àSTN2RáÆâãØÙäåp79:;æçèméê79ÚjÛëÅìSm?@ íÎ79:;°îïaÜÝÛð¸Õ^+ñÉ^,òM+óÃôõÕmöa÷øvpbù+õkçICmöIÄöÔúûÊü;ýþÚÛaÆpÿõ36ÕÄ.¾¿ÀAÁABùKOPLMaEFp^ÃÄEFade'36==Q;=2BpÖö+79:;b+òªck hü;=:;ÚÛÆpÅ¡+J¡,=+,=,=QBs79aÆÊp79a'stÊ()97a½=7(2)ø97aJ7=77!(3)#·Æ£ª97$p79%&'a'stÊy()æ(=(%÷a½(2)%&'Ö)*a+hp?@,A-HIÕ.@A$HIast$/p3333}}}}de/Eg0'de/Eg0'de/Eg0'de/Eg0'^¡ÖEFadee½a12û456EF'78ø*aB9:GÅ¡EFÇCaW½;=1e½:?@e½pb1´ae½A BaÚCD°úîEÖe½ade9x9xÕ.'ÎÏϧF=G=HIBJÐKL°1ÏADQOPQ9xëgR/S°ÅT*M9xaUL=/g=v=fJBÆpVm/'36Wmøvy9xE=9xL=XYv=Zu$[pbÿ\]^_Õ£^¡9x`jÊ79abcÝaÖdcHIcÝefgaW½1212h;g^¡Q;9xij12k?ÚCDlPÞßamnoÙCpqr@/ÚCDstpudefJ//×ubT*Eg/ùKM9xXYGuJvwõaLQxAyaEFÍÊJKLQabõa ÒÏkzI{C,=,|a}~9x¡©2}~$îIbõLQOPa9xûÆPdevapÅ¡de/LMJg$î'IÕma UL/û4^YaM/gG´x'ap/'stW stYXÎMG^EFaÀ¸stafJpÊ$¹EFstfJaXHIÕ´a$îde/T*' í;a9xvî¯Cm ¡¢£¤^st9xMÕ¥a£vp34444}}}}EgkalmnoEgkalmnoEgkalmnoEgkalmno4.4.4.4.9xÚÛk¦,§¨av©9xÚÛk¦,§¨av©9xÚÛk¦,§¨av©9xÚÛk¦,§¨av©@O9xaÚÛkª'è9xcÕP9xc«Õ9x¦cÆP9xca¦9xì9x¦c¬ÆP9xca§¨bRàßaST£9x¦kúûëST9x®1Ï9x@O9x¦®¸aS¯9x@Oª°±plÿï²³a9xÚÛÏkúî9x¦9x§¨v©´µu2¶[]9xaADXY/jkACHP9xcAISENSEP9x¦cAIGNDPADXY/a½½GNDP9x§¨a½½p4.24.24.24.29xXwa¾¿HI9xXwa¾¿HI9xXwa¾¿HI9xXwa¾¿HI9xbëADXywijÎϬ1HILÀ9x¾¿ÁHIpÂÃX´L9xXcÝij¡vcÝa2.56dÅ-ª¿ÁÀ·c9xÎÏX°Õm¬ca9xÆVbÈ9xkp$îb9xëADXywijúûª¿ÁacÝvHxp'ÇðaÊÃmHIÏÊúÈaúûQHIDµÉÊaplPQHIÊbXy°aÿ¿Á9xËÎÕm¬c9xÌÍðµp9xbXywI'ÎÏ¥cÝHza·1HI'ÊHx9xkÅ¡KDѽÒBÓl|aÔ¬c9xp4.34.34.34.3¦¡gRÕaXYv/¦¡gRÕaXYv/¦¡gRÕaXYv/¦¡gRÕaXYv/Å¡aEFHIÙCadee½P§ÖdeaùKXúî9xv×XCØgRCmADMXuk[aôÊXèØ£gRv^èõ9xMXY«IÕØÉgR^èØ£XYaMLvfJBÜûpÙgR!$IgRõÕmÕÚúî§ÖaÚÛ;ïi'aÊúîõÕmvÛ/aXYL/Öm£úîÞßvAb¬a úîù½¯ÜgRdeMÝÞ©ÚÛp4.44.44.44.49xvwa¶L9xvwa¶L9xvwa¶L9xvwa¶L^¡©2LMka+EFe½IûN2ßà'deaø*áZ^¡79bâÓ÷×aã*£e½ûA b&'äfa÷ÉÿXYµa9xô¬3ç]79=&a=&'÷BC9:lÿbvij9xkaÖmvåvLp¶Lai'ÆôÊæx9xkçav3679a÷cÝîÚCD²èäacÝBpvéû9xk$I,÷cÝBêav³øæxï=aʦë^÷Mìv¯Öíì*kîð^e½ ïðSaÕmñèmcÝvÃÊò©'æxavp4.54.54.54.5¦¡£ÎastfJ¦¡£ÎastfJ¦¡£ÎastfJ¦¡£ÎastfJbMstfJÏkÚÚgRð×Ömø*astcÝ#ó^ÈstMu´p{Cst^¡CmstcÝa¬ØáaõbGÓb^È×eða9xjvN2UVÔúû¬bCm¬ast$îÕ^ÕÀÕDstôu^ÕDst%abgRakóîõ®Ùöatp£ÎµMsta-ÊÕmúMa12pu29x¦,§¨av©4Î÷ë'YÕÄø*astì/^MÃÚÚHIù¥afJûÅ¡ú×amXø*astì/ûiüÈfJa^ý$î'þvÙÎaÿûbÈLMkvdeEFðÞstÅde/Yst9xaWì/£aS¯fJ^ÎMÍÿahaÿÐaühJüde^ýamXÎafJJ¡pbÎaEgkìBPR'12°±ëøS jÐÕ.PÕªJÏC5ïðagR=p5555}}}}*+de/a_`b¡y12büae½î56EF³a9:/aö¾STX;ùKaXYLCa9xvîþvÙgRBB_a!^´de/ÔÊN2I¡¢apZZZZ()ZB.EFstfJÓL=!.:ð.996(2),.QústLfJ!,:úð.997(3)!, .+:;estfJ.,¢ó,998,4:48-5