Is electric traction control available on modern controllers
- Thread starter aurum
- Start date
I havent' seen one yet, but if you're handy enough with electronics, you could do it with a couple of reed switches (or other passive or active wheel speed sensors) a quad op-amp chip, integrating the pulses from the two wheels' speed sensors separately, then comparing the voltages, then using the difference to add or subtract from the throttle's actual voltage.
Might not want to ever actually add to it, since going faster might cause slip on the one wheel that still has traction, but slowing down the faster wheel (presumably the motorized one) ought to be ok.
Might take five opamps rather than four, depending on how you mix the signals to get the final throttle input to the controller, but four ought to do it. Sorry I don't have an actual circuit, but using basic op-amp circuits available at a few of the "learning electronics" websites would probably work, once you work out the passive component values needed for whatever voltages you want to run this all at.
Might not want to ever actually add to it, since going faster might cause slip on the one wheel that still has traction, but slowing down the faster wheel (presumably the motorized one) ought to be ok.
Might take five opamps rather than four, depending on how you mix the signals to get the final throttle input to the controller, but four ought to do it. Sorry I don't have an actual circuit, but using basic op-amp circuits available at a few of the "learning electronics" websites would probably work, once you work out the passive component values needed for whatever voltages you want to run this all at.
lifepo4ever
10 kW
what monster motor you have to spin like that ? 
The Mighty Volt
1 MW
lifepo4ever said:what monster motor you have to spin like that ?
That's what I was thinking. I am trying right now just to get wheelspin power....never mind figure out a way to limit it :lol:
grindz145
1 MW
This is a great idea, but it's kind of a corner case and thats why we haven't really seen it implemented. I was considering building a 2WD controller with traction control for use in snowy or other low traction environments.
lifepo4ever
10 kW
i have 8kw of power :lol: :lol: with a rear motor with all the weigth there so i do wheelie but no spinning
lifepo4ever
10 kW
sjacome said:
abs system will do nothing if your rear wheel start spinning with the trottle open :lol: :lol:
lifepo4ever
10 kW
i was riding at 30kph with the cruise control and forget to release the resume buton so i have to brake but because the bike was pushing all the force on the front i fall and i have hydraulic disque brake ,
if you run only a 36 volt battery pack set up the brake will stop the bike but not a 100 volt lipo set up at 80 amp like I have,
More you try to stop the wheel more the motor will try to draw current from the battery and controller
if you run only a 36 volt battery pack set up the brake will stop the bike but not a 100 volt lipo set up at 80 amp like I have,
More you try to stop the wheel more the motor will try to draw current from the battery and controller
el_walto
10 kW
ebrake leavers actually are a good added safety device in my mind. Someone should design some with analog regen.
Very simple to do to the levers themselves, but the controllers don't usually support it that way. I've got a thread (or replies in a thread) about this somewhere, and some ideas on how this might be worked around, for controllers that don't do much or any noise filtering on the brake line (RC filtering, basically).el_walto said:
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