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d e g ( a t 3 0 . 1 r a d / s e c )F r e q u e n c y ( r a d / s e c )未校正系統(tǒng) 21 0 0 . 5 1 1 . 5 2 2 . 5 300 . 20 . 40 . 60 . 811 . 21 . 41 . 61 . 821000 . 0 0 1 s + 0 . 1 1 s + s3 2T r a n s f e r F S t e p S co p e 122 1 5 0 1 0 0 5 0050100Magnitude (dB)101100101102103104 2 7 0 2 2 5 1 8 0 1 3 5 9 0Phase (deg)B o d e D i a g r a mG m = 1 1 d B ( a t 9 7 . 8 r a d / s e c ) , P m = 3 3 . 1 d e g ( a t 4 5 r a d / s e c )F r e q u e n c y ( r a d / s e c )超前校正 23 0 0 . 5 1 1 . 500 . 511 . 51000 . 0 0 1 s + 0 . 1 1 s + s3 2T r a n s f e r F c nS t e p S c o p e 10 . 0 4 9 3 s + 10 . 0 0 8 5 s + 1G c 124 G 0 ( s )R ( s )C ( s )E ( s ) G c ( s )0100()( 0 .1 1 ) ( 0 .0 1 1 )Gs s s s? ??40? ?若要求相角裕量 ,截止頻率 設(shè)計(jì)系統(tǒng)的串聯(lián) 校正 裝置 5/c rad s? ?25 2 0 0 1 0 00100200Magnitude (dB)103102101100101102103104 2 7 0 2 2 5 1 8 0 1 3 5 9 0Phase (deg)B o d e D i a g r a mG m = 2 1 . 5 d B ( a t 3 0 . 2 r a d / s e c ) , P m = 4 4 . 8 d e g ( a t 6 . 9 5 r a d / s e c )F r e q u e n c y ( r a d / s e c )26 2 0 0 1 0 00100200Magnitude (dB)103102101100101102103104 2 7 0 1 8 0 9 00Phase (deg)B o d e D i a g r a mG m = 2 1 . 5 d B ( a t 3 0 . 2 r a d / s e c ) , P m = 4 4 . 8 d e g ( a t 6 . 9 5 r a d / s e c )F r e q u e n c y ( r a d / s e c )紅色 : 未校正 綠色 : 校正裝置 藍(lán)色 : 滯后校正后 27 0 0 . 5 1 1 . 500 . 20 . 40 . 60 . 811 . 21 . 41000 . 0 0 1 s + 0 . 1 1 s + s3 2T r a n s f e r F c nS t e p S c o p e 11 . 1 8 s + 11 4 s + 1G c 128 0 0 . 5 1 1 . 5 2 2 . 5 300 . 511 . 5 滯后校正超前校正滯后與超前校正后閉環(huán)系統(tǒng)的階躍響應(yīng)比較 29 G 0 ( s )R ( s )C ( s )E ( s ) G c ( s )0 () ( 0 .1 1 ) ( 0 .0 1 1 )KGss s s? ??40? ?若要求截止頻率 相角裕量 , 幅值裕度 Kg不