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4、 , . 30630.0.0, .2 : 1716882 . - 2434680 . ( 2041:1990 . , NEQ) 30630.0.099 -, . 30630.1.299 , . ( 60068-2-6:1995 . 2-6. . - Fc. (), NEQ) 30630.1.82002 ( 60068-2-57:1989) , . ( 60068-2-57:1989 . 2. . Ff. , - , MOD) 30630.1.92002 ( 60068-2-64:1993) , . ( 60068-2-64:1993 . 2-64. -1 314182010(IEC 6006
5、8-2-81:2003) . Fh. ( ) , MOD) - - , 1 , , . (), - () . , , - , , .3 24346 30630.0.0, :3.1 3 (3 dB bandwidth): - , 0,708 , , - .3.2 (critical damping): - , , , .3.3 (critical frequency): , ( ) , -, , .3.4 (damping): , - . , -, , , , -, , .3.5 (damping ratio): .3.6 ; (decibel; dB): . L, , , X X0, L =
6、20lgXX0c230c232c231c231c246c248c247c247.3.7 (fixing point): , - , . , , , .3.8 (standard acceleration due to gravity);gn: , - , . . 10 /2.3.9 (Hanning window): -, .3.10 ; (high-frequency asymptote, HFA): , . 1 , . . 2 .3.11 (measuring points): , .2 3141820103.11.1 (check point): , , . 1 , - . 2 , - . , - , . 3 , , , . 4 , - , , , , ( ) . - , . , - .3.11.2 (reference point): , - .3.11.3 (response points): , . 1 . 2 .3.12 (natural frequency): (- ), (, ).3.13 (number of high peaks of the response time-history): ( ) () , - (. 1).3 3141820101 , (+ 70 %);2 , (70 %) 1 1 , .
