Looks great! How has testing been going?

Not sure what level the fault signal should be but please be super careful if you have HV connected and live with the inverter open. Should ideally be using HV rated gloves. Guessing you are just testing interlock without voltage but just in case!

Sounds like your multimeter might not be up to par, those measurements are well out of expected tolerance...

Suspect Tom is right - but just in case - I had an issue caused by the HVIL input For anyone trying to fix similar - I found a tombstoned capacitor (C50) on the HVIL line into the nand gate - resoldering that appears to have fixed the issue. I guess HVIL was triggering - which it seems would also ca...

Do you have the 12v to the PDM switched via the VCU controlled relay? Describing the same symptom as when you wake the PDM ign line before precharge. If it helps I can confirm AC charging is working fine on v2

Does anyone have any of medium/long HV module interconnect cables they would be willing to sell/swap in UK? (I have several of the short "back to back" connectors available)

Just checked, it's a normal m8x1.25. Maybe your threads are damaged?

Pretty sure it's a standard M8 coarse bolt - (I replaced mine)

You can buy these direct from BMW for next to nothing - the short one for side by side modules ones are £13 if I remember correctly!

Thanks, yes I'd seen that one, but it didn't mention whether offsets were considered. In theory it would still work to some degree even if 180 out, do you think power matches expected, get good regen and is it the same performance when in reverse gear?

Looking for some advice as planning to reverse a leaf motor on original inverter. I can swap the cosine resolver pair and a phase which I think should reverse motor. However I think this will offset the resolver signal by 180 degrees as cosine phase is inverted, which from previous would probably ru...

Back to testing this. This time implemented a full PID controller.

Parameters need a fair bit of tuning, but best result yet. Still oscillating but slip angle was kept within 40% - current is being pulled back within 50ms of the slip starting, but still takes 200ms to control.

You get 125 from the 110?

Did anyone manage to solve this in the end?

Not able to get as close with an integral approach, tried a few things. Probably need to look towards PID - the derivative should prevent the overshoot both of these approaches give.

Exactly, currently it's 3* slipError (deviation from desired slip) I was just focused on the first slip ie: getting a control loop fast enough to catch the initial slip - but was certainly expecting getting my approach to reach steady state would need lots of tuning. Will give integral-only approach...

Another slight improvement. 50%/10ms and throtfilter 3. I reckon I can shave off even more time by either dropping the target slip (so it drops throtmax quicker) and increasing the proportional response (or moving to a basic PID controller that can see the trend of increasing slip earlier) and reduc...

Sounds like you've gone through the same journey! (am also SDU) Thanks for your patch! I've compiled latest with your commit included and will give it a whirl at 50%/10ms and throtFilter at 3 instead of 4 when out next. I wonder if it would be also be useful to be able to configure rising and fallin...

40%/10ms - fair bit better but still not fast enough. Throttle/potnom is cut within about 40-50ms of the slip starting, but motor current takes a further 50ms to decay - can reduce the ramp up to 100%/10ms but then I'm dealing with some internal openinverter ramping I guess...

Ran a few tests today with 2%/10ms throtramp. It's "working" but unable to keep up and ends up oscillating. Seems throtramp also applies for coming off throttle, I had assumed it was only for application, but clearly see its falling at 2%/10ms also. I'm going to have to raise that value a ...

Mystery solved!

Hmm setting the scaling to -32 works, but I have to send in a positive number...

Struggling to get the throtmin parameter to map... for throtmax I have: can rx throtmax 1794 48 8 32 (which works fine) For throtmin (negative numbers) I have tried all sorts but think it should be: can rx throtmin 1794 56 8 32 I can get it to set 0 on 0x00, but no other values work (ie: 0xCE (-50) ...

Well looks like I need to just try it!

I looked at a few 3rd party TC modules and seems common to have a parameter for increased slip allowed during initial phase of launch (I guess to combat backlash, squat & slow wheel sensor update) I've implemented to see if useful...

Thank you both - that's most helpful! Johannes, looks like you are sending the throtmax param at 100Hz - is that working OK?