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by aetherspawn 601 days ago
Not really.. it will only be applying 5Nm or so which is such a small amount of torque that you could likely stop the wheel with your hand (equivalent to holding up 500g object with 1m ruler)

He is spoofing an ABS message from a working vehicle that says “no faults present” on a vehicle that is clearly full of faults.
2 comments
aetherspawn 601 days ago
ABS are usually ASIL D rated (ISO 26262) which means they have an on board watchdog, redundant processor with voting system, etc. so this failure mode (locked up and still sending) is considered impossible by design.
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Szpadel 600 days ago
sure, but I would think some special case when we expect car to have 0 speed to not request any torque from its motor. IMO three is no case where car should request any torque when been in neutral
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aetherspawn 600 days ago
If I had to take a guess why… it probably thinks that you’re sitting on a hill and doesn’t want you to roll back.
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Dylan16807 601 days ago
> Not really.. it will only be applying 5Nm or so which is such a small amount of torque that you could likely stop the wheel with your hand (equivalent to holding up 500g object with 1m ruler)

It's good that it's small but I'm still not thrilled about this control loop.

> He is spoofing an ABS message from a working vehicle that says “no faults present” on a vehicle that is clearly full of faults.

My point is that the same messages would happen if you had a fully working vehicle and then the ABS unit locked up in a way that didn't interrupt sending.

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