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標題: (急) Motor & ESC 線位問題 [打印本頁]

作者: michealp 時間: 2010-8-16 20:40
標題: (急) Motor & ESC 線位問題
本帖最後由 michealp 於 2010-8-16 20:52 編輯

近日小弟有隻 motor 有問題
我先將MOTOR同ESC 分開
我用隻"他表"他隻motor 既 A, B, C 既線口
MOTOR發現如下:
A 對 B, 冇限大
A 對 C, 冇限大
B 對 C, 通的
ESC發現如下:
A 對 B, 冇限大
A 對 C, 冇限大
B 對 C, 冇限大
另外我有隻冇問題既 motor
我又"他"下佢,但result 同之前唔同的...
A 對 B, 通的
A 對 C, 通的
B 對 C, 通的

有冇c-hing 可唔可以幫手試試佢隻motor
睇下咩result 點為之岩呢?

作者: hardmankam 時間: 2010-8-16 21:17
I tested 3 good motors, here is my findings:
a to b
a to c
b to c
all infinity resistance (冇限大)

作者: michealp 時間: 2010-8-16 21:19

I tested 3 good motors, here is my findings:
a to b
a to c
b to c
all infinity resistance (冇限大 ...
hardmankam 發表於 2010-8-16 21:17

登錄/註冊後可看大圖

THX for your reply
但c-hing 個隻係唔係冇刷?
我用的是冇刷

作者: hardmankam 時間: 2010-8-16 21:20
yes, brushless motors. (only brushless as a,b,c)

作者: michealp 時間: 2010-8-16 21:24

yes, brushless motors. (only brushless as a,b,c)
hardmankam 發表於 2010-8-16 21:20

登錄/註冊後可看大圖

係wow一冇刷先有 a b c
但我隻冇問題既 teampowers 冇感冇刷真係a b c 都通晒的...
真係唔係好明
我記得以前讀書時教過motor 入面係線圈來的, 應該通先岩的....
但c-hing 你話你3隻都係唔通就更加唔明

作者: hardmankam 時間: 2010-8-16 21:30
in electronics, when 2 test points has infinity ohms(冇限大歐姆), that mean they are connected. so all my good motors, A,B,C are connected.

when you say 冇限大... what do you mean?

I hope what I am saying is correct. I took electronics some 20 years ago. haha

作者: michealp 時間: 2010-8-16 21:35

in electronics, when 2 test points has infinity ohms(冇限大歐姆), that mean they are connected. so ...
hardmankam 發表於 2010-8-16 21:30

登錄/註冊後可看大圖

a 對 b 度 ohm 數, 如果讀數係 0 ohm, "他表"會"beep", 我既理解係 closed circuit, 即係"通"
相反, 如果唔起 ohm, 即係好大ohm數, 我既理解係 open circuit, 即係"冇限大"

唔知我有冇誤會呢?
thx

作者: hardmankam 時間: 2010-8-16 21:52
you are right:

Ohms; This is the resistance of the wire to flow of electricity. Or thinking of the difference between a small diameter hose and a large diameter hose. The range of ohms goes from zero to infinity. Zero ohms is when it's real easy for the electricity to flow. A reading of infinity is when there is no path for the electricity to go through.

All my 3 good motors has infinity ohms between A,B&C.

作者: ryancmlam 時間: 2010-8-16 22:31

in electronics, when 2 test points has infinity ohms(冇限大歐姆), that mean they are connected. so ...
hardmankam 發表於 2010-8-16 21:30

登錄/註冊後可看大圖

hardmankam hing,
if 2 test points have infinite ohms, that means they are NOT connected. the resistance of 2 connected points should be zero (or several ohms).

michealp hing,
it is likley that the coil A of your problematic motor is open circuited. i.e. something wrong

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