Search found 963 matches

by stancecoke
Jun 17 2019 2:58pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

0.52NM per unprocessed ADC step. OK, but if you limit the allowed range to 35 ADC steps, the sensitivity of the sensor is very poor... The max value, you can dissolve is 35 * 0,52 = 18,2 Nm :confused: If you put your 80 kg on the horizontal crank, you will get 800N * 0,17m (crank length) = 136 Nm T...
by stancecoke
Jun 17 2019 8:26am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

- the force measurement was done with pedal stopped, // torque sensor #define PEDAL_TORQUE_X100 52 /*--------------------------------------------------------- NOTE: regarding torque sensor Torque (force) value found experimentaly. Measured with a cheap digital hook scale, we found that each torque ...
by stancecoke
Jun 11 2019 2:27am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Thank you for that information, looks really interesting. I think the receiver has an analogue voltage output, so it should work with our firmware out of the box. But I can't identify the pinout from the pdf. The costs are OK, but I don't know if you can buy a single piece as a private person via "m...
by stancecoke
Jun 05 2019 3:45am
Forum: Motor Technology
Topic: Need help with this blown KT controller
Replies: 28
Views: 1297

Re: Need help with this blown KT controller

I had just replaced his bms cause the old one was shit This might be the problem. If the BMS cuts the connection to the controller due to overvoltage protection during regen, the voltage at the mosfets will increase dramatically. I recomment to try the open source firmware, if you use sensored moto...
by stancecoke
Jun 04 2019 11:51am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

kdog wrote:
Jun 04 2019 5:54am
My mate has been through 3 40amp controllers all dying on Regen.
Did you use the stock firmware or our open source firmware?

regards
stancecoke
by stancecoke
May 27 2019 3:42am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Thank you for your detailed report! Of course I am interested in some photos and your software implementation! :-)

regards
stancecoke
by stancecoke
May 21 2019 2:19am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

You can try it of course, but I don't recomment to do it. The big resistor and the voltage regulator will get very hot. Perhaps the voltage will drop and you'll get a very strange behaviour of the whole system.

regards
stancecoke
by stancecoke
May 21 2019 1:04am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

@Xnyle has implemented the experimental function PWM off in the Java-tool. You can try this setting. But rotating the wheel by hand is not a normal use case, while riding or pushing your bike you won't recognize a resistance, as the control loop will keep the current at zero fast enough. regards sta...
by stancecoke
May 20 2019 5:30am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

So i assume it can work also in this open source firmware ? @Xnyle has implemented all parameters of the protocol in the display.c code, but as both of us don't like LCD displays very much, only very basic functions, like assist level, are really used. Just for showing speed, power and switching th...
by stancecoke
May 18 2019 12:55pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

if it can support the Bafang SW102 display device You can use a eggrider display , it uses the same hardware and is available with Kunteng protocol, as far as I know. Where are the most up to date and simple step by step instructions for getting set up? See my signature. regards stancecoke
by stancecoke
May 16 2019 2:13am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

No, this is not a "mechanical" problem, it is absolutely exactly a software problem. Or, perhaps, hardware problems (signal filtering, interference) of the KT controllers themselves. OK, but it can't be a software problem. I have a buck converter for supplying the head- and rearlights on my bike. E...
by stancecoke
May 15 2019 8:24am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

haiyi911 wrote:
May 15 2019 8:17am
i tried other controller and the motor run well
Was the other controller a square wave or a sinosodial one?

regards
stancecoke
by stancecoke
May 15 2019 6:21am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

i think i am limited with KV value of moto Yes, you have to use a battery with higher voltage or you have to use field weakening (not recommented) with my direct motor the small resonance vibrations in the range of 11-12km/h,could it be fixed? It's a mecanical problem, you can try to increase/decre...
by stancecoke
Apr 02 2019 2:24am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

gutyex wrote:
Apr 01 2019 12:53pm
I'll dig out the necessary hardware and see if I can get the diagnostic output from the controller.
I try to add all issues, that are reported more than one time, to the FAQs at github.
You can add your findings there, too. Everybody with a github-account can edit the Wiki.

regards
stancecoke
by stancecoke
Mar 26 2019 10:34am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

casainho wrote:
Mar 26 2019 9:48am
Don't you guys want to help develop the firmware for SW102 Bluetooth graphic LCD
I still admire your ambition when it comes to displays. I just find it boring, I don't want to have any frills on the handlebars. :-)
Perhaps, Xnyle is interested...

regards
stancecoke
by stancecoke
Mar 23 2019 4:16am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

kotofos wrote:
Mar 22 2019 4:11am
Hi, will it have losses about same as in stock fw, or more than stock?
I don't know. Just try it.

regards
stancecoke
by stancecoke
Mar 22 2019 3:48am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

The implementation would be not that difficult. You have to determine the "base line" of the Motor at different voltages with a suitable test stand by braking the motor from idle run to the defined maximum current. From this you get the linear equations for OmegaA1 and OmegaA2 depending on the volta...
by stancecoke
Mar 21 2019 4:21am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

I would prefer to start looking at technical notes about the subject, because maybe we can find a simple algorithm to do that. This paper shows a quite pragmatic way to implement field weakening with simple math, but you need to know the motor characteristic ("base speed line" and back EMF constant...
by stancecoke
Mar 20 2019 8:24am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

I know there is an enhancement request in github for this. If the devs have some idea how to enhance this, I will help with beta testing. you could increase the advance angle at high speeds for field weakening by using an exponential function. But I don't know, if the calculation can be done in rea...
by stancecoke
Mar 18 2019 10:39am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 3586
Views: 202540

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Bash1303 wrote:
Mar 16 2019 6:44am
Does the controller give the same power for the road and offroad mode?
Yes, the offroad mode disables the speed limit only. The power depends on your battery-current settings. The 250W limit is only relevant for the long-term capacity of the motor.

regards
stancecoke
by stancecoke
Mar 18 2019 8:21am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

This is not wrong, it is an approximation, and it is as accurate as the one currently used. No. The way it is implemented at the moment, it's based on a proper physical correlation, with the known issue of ignored losses. With your suggestion, it's just not correct, especially at low duty cycles an...
by stancecoke
Mar 18 2019 6:27am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

casainho wrote:
Mar 18 2019 5:28am
on TSDZ2 is even different the FOC implementation.
Ah, I remember, you calculate the advance angle from battery current and erps :-)

regards
stancecoke
by stancecoke
Mar 18 2019 5:14am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 2455
Views: 113995

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

I think the torque of the motor is proportional to the battery current. No, this is definitivly wrong. The torque is proportional to the quadrature part "iq" of the motor current, (motor current = battery current / dutycycle). The direct part "id" produces no torque but only heat and is controlled ...