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yk_wangkun
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樓主  發(fā)表于: 2007-04-22 22:29
[attachment=748] [attachment=748]  我曾寫(xiě)過(guò)一個(gè)測速的程序，用X0做輸入，電動(dòng)機轉速低的時(shí)候測量還能準確，但是轉速稍高點(diǎn)就檢測不到信號了。請大家指點(diǎn)下，應該是用中斷吧。謝謝

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[ 此貼被yk_wangkun在2007-04-27 11:46重新編輯 ]
zhujiafei
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1樓  發(fā)表于: 2007-04-25 22:49
我也編過(guò)一個(gè)測速程序，方法是測Ｎ個(gè)脈沖看看用了多少時(shí)間，再經(jīng)計算得出轉速，將速度分成適當的區段，脈沖數Ｎ根據不同的區段進(jìn)行取值，這樣測出來(lái)的轉速就很準確．我做過(guò)實(shí)驗，測０－３０００多轉／分的轉速，誤差只在3轉／分以?xún)龋?div class="msxy1jx" id="alert_20318" style="color:gray;margin-top:30px">[ 此貼被zhujiafei在2007-04-26 22:44重新編輯 ]

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