作者XUEBILEN (4/30視小工科之夜)
看板NTUAviation
標題Re: 馬達效率估算
時間Sun Apr 25 01:40:48 2004
※ 引述《HomeboyWu (William)》之銘言：
: ※ 引述《XUEBILEN (4/30視小工科之夜)》之銘言：
: : 我說馬達無負載時....啃清楚
: 那更扯啦
: 無負載就沒有輸出扭力嘛
: 所有扭力都在加速轉子(沒摩擦力)
: 然後就直接加到空轉轉速
: 那就是從頭到尾都沒扭力
: 又反比囉？
Basic Operational Principles of DC motors
T=K*D*I
T:torque
K:proportional constant
D:magnetic flux
I:armature current
E=K*D*W
E:back emf(when the conductor moves in the magnetic field,a voltage is
generated across its terminals which is the back emf)
W:the shaft velocity (rad/sec) of the motor
敘述:The torque developed on the motor shaft is directly proportional
to the field flux and the armature current.
Back emf is proportional to the shaft velocity,tends to oppose the current
flow.
你自己判斷是不是反比...別劈頭就說別人在扯
(你說話小心點我並沒有要跟你嗆聲,但是看到你的回po讓人血壓上升)
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※ 編輯: XUEBILEN 來自: 61.217.123.162 (04/25 01:49)
※ 編輯: XUEBILEN 來自: 61.217.123.162 (04/25 02:34)