RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區

 找回密碼
 新玩家註冊
搜索
查看: 1821|回復: 10
打印 上一主題 下一主題
收起左側

Questionz about 變速器 ..

[複製鏈接]
1#
ice1234 發表於 2006-6-16 13:25:20 | 顯示全部樓層
原帖由 vrally582 於 2006-6-16 11:07 AM 發表


So, how about transmitter? Does the transmitter release only a throttle signal or breaking signal
receiver? I heard that " speed control unit"can make the car run with half speed. I ...

You seem not really understand  how  ESC and MSC works
Transmitter send analog signal in PPM or digital signal in PCM to receiver that both are encoded,
receiver do decoding work and separate the signal pulse into individual channel(change from 1ms to 2ms) .
ESC receive the decoded  signal from receiver and according to the variation of the pulse signal which from 1ms to 2ms to control the speed of motor and the direction, 1.5mS is define as a neutral point so motor will stop within +- 20uS  deadband...Speed controlling can be done by using PWM (change the Duty cycle ) or in other word changing the proportion of on/off time in fixed frequency for switching the Power MOSFET to change the average output voltage........not only half speed ,it can vary the speed of motor linear.
MSC only use a resistor to reduce the current via the motor to achieve the speed controlling.and it only have three speed  and can not provide linear speed control
I hope these i have mentioned can give some idea for u...

[ 本帖最後由 ice1234 於 2006-6-16 21:09 編輯 ]
您需要登錄後才可以回帖 登錄 | 新玩家註冊

本版積分規則

手機版|小黑屋|RC EVOLUTION - 遙控工房

GMT+8, 2024-11-1 07:40 , Processed in 0.028921 second(s), 15 queries , Gzip On.

Powered by Discuz! X3.2

© 2001-2013 Comsenz Inc.

快速回復 返回頂部 返回列表