有關gain margin - 考試
By Hardy
at 2015-07-22T09:18
at 2015-07-22T09:18
Table of Contents
https://imagizer.imageshack.us/v2/320xq90/r/538/nXhhBG.jpg
上圖中,求gain margin 時需先知道角
度為-180度所對應到的頻率,由圖可知
W180=100rad/s,所以求得GM=40db
但實際上W180應該是無窮大,因bode plot僅為近似~如已W180=無窮大來看,
GM=無窮大~ 有人知道那個比較正確呢?
謝謝先
--
Sent from my Android
--
上圖中,求gain margin 時需先知道角
度為-180度所對應到的頻率,由圖可知
W180=100rad/s,所以求得GM=40db
但實際上W180應該是無窮大,因bode plot僅為近似~如已W180=無窮大來看,
GM=無窮大~ 有人知道那個比較正確呢?
謝謝先
--
Sent from my Android
--
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考試
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