Stealth bomber 8000w re-mapping testing and advice

[Kennyken5072]

Hi all, I've attached 2 photos of the setting for my stealth bomber 8000w ebike replica and been playing with throttle voltages which is make adjustment test so on.
My main question is on the throttle photo you have accelerate (ms) 200 & deaccelerate (ms) 300 before I start messing around with this I'm trying to improve throttle response and when you close the throttle quicker deacelerate, with the parameters what would be a good setting if anyone can help
Thanks Steve

 

[dominik h]

You can reduce throttle response to 100ms , but if you want to decelerate faster you need to raise the e-brake current.
And be aware that flux-weakening can kill your controller when the motor sees no load. I killed an SVMC72150 and an SVMC72260 while testing on the main stand.
When the throttle is closed the Sabvoton forgets that he has done FW and then the motor produces more volts than the controller and probably the bms can handle and both will die. If you are using FW on the road it is working fine, as you will never reach such high rpm as when the wheel is in the air.

 

[Kennyken5072]

Hi glad you said about wheel off the floor it was thinking for the future for test runs, but now won't do that,
Was thinking accelerate (ms) 100
Then deacelerate (ms) 200
And see how it works
Another question what are the limits to throttle min voltage (v) I've set to 1.9 originally was 1.30
And throttle max voltage to 4.50 was originally 4.30
I don't know the min and the maximum of the above hence why doing little bit at a time there has to be threshold limits I use to be a senior test technician testing engines am trying get my head around electric it's helps when you have the specs of what you're trying to tune. Anyway thanks for help appreciate very much.
Thanks Steve

 

[dominik h]

The hall sensor throttles I have seen are between 0.9-1.4V and 4-4.5V.
The 200ms are only the gap between closing the throttle and the reaction of the controller.

If you set the lower limit to low, then the motor won't stop and if you set the upper limit to high, then you won't reach full power.

 

[Kennyken5072]

Hi mate sorry taken ages get back to you busy busy, anyway the de accelerate ms is 300 not going to touch it, accelerate ms is 200 am thinking testing 50 ms on that and on function e brake is on and e brake current is set to 50 a at the moment am thinking test it at 100 a and see how goes oh throttle voltage max have left at 4.30 and throttle voltage min std is 1.3 and I've set to 1.80v
What do you think?
Advise is very welcome
Thanks
Steve

 

[dominik h]

I do not know if the sabvoton checks the throttle voltage, as I never changed the values as long as I had installed the sabvoton.

My Fardriver says throttle error when the set values are more then 0.5V away from the measured values.

Make small stets when changing current for regen.

 

[Kennyken5072]

The hall sensor throttles I have seen are between 0.9-1.4V and 4-4.5V.
The 200ms are only the gap between closing the throttle and the reaction of the controller.

If you set the lower limit to low, then the motor won't stop and if you set the upper limit to high, then you won't reach full power.

 

[Kennyken5072]

Hi mate am going to list my throttle adjustment with standard values in brackets

Throttle min voltage (v) 1.8
standard is (1.3) I've made a 0.5 increase.
Throttle (v) 4.3 standard no change
Max voltage
Aceleration(ms) 200 standard no change
Deacleration(ms) 300 standard no change
Throttle mid(v) voltage 2.50 standard no change
Throttle max current (A) 225 standard no change
That's the mapping for the throttle is there any adjustments I can try like mid or max throttle voltage? I'm interested in brutal acceleration not to bothered about max speed 50 is plenty
Thanks Steve

 

[dominik h]

Brutal acceleration is only possible with a lot phase Amps.
All your mentioned settings above make only smalles changes in behaviour of the throttle.

Your setting makes the controller to try to give 225A at 2.5V throttle.
If you enter 350A at 2.5V mid throttle, then you reduce your throttle to the first half of the possible throttle range.
Acceleration will be the same but you loose half the throttle range.

 

[Kennyken5072]

hi mate been a while,
am interested in if i can improve on anything i've attached a spread sheet of all the setting for the controller the 1st sheet is the main data ignore sheets 2,3,4 attached.
If can help with any adjustments on the spreadsheet as said before acceleration am wanting top end am hitting 60mph anyway which is fine do'nt want anymore be grateful for any input.
thanks