[理工] [控制]-轉不過來..
題庫班 153頁
怎麼判斷低通率波
DC gain 是什麼..
W = 20 我算怪怪的 應該是算錯了
我是這樣算
2 | 20000 |
--- = | ----------------------- |
√2 | 2 |
(jw+10) (jw+100)
20000 2 2
= --------------------- |||||| (jw+10) = (w + 100)
2 2
√(w + 10000)(w +100) (jw+100) = √(w^2 + 10000) 這樣應該沒錯吧
2 2 2
--- (w + 100)(√(w + 10000) = 20000
√2
2
兩邊平方 t = w
2
(t + 100) (t + 10000) = 100000000
3 2
t + 10200t + 200000t - 10000000 = 0
t= 41.28
w = 6.42..
哪裡錯了..
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