Replies to post #82536 on Tesla Inc (TSLA)

[boston745]

This SUA issue I detailed in my last post is pretty much confirmed by this petition.

New information received by the NHTSA shows that sudden unintended acceleration events with Tesla EVs were real and not driver errors. The report explains in detail what caused the cars to accelerate even when the accelerator pedal was not pressed.

What's worse is that the incorrectly increased sensor signals will be sent via the CAN bus to the vehicle logs, causing Tesla and NHTSA to conclude that the driver caused the sudden increase in torque by stepping on the accelerator pedal. But in this case, the sudden acceleration was caused not by the driver stepping on the accelerator pedal but by a random superposition of a negative-going voltage spike (which is about 100 microseconds long), and the sampling time of the analog-to-digital converter (which is about 10 microseconds long). This random superposition explains the low occurrence rate of sudden acceleration in Tesla vehicles

https://www.autoevolution.com/news/breaking-nhtsa-petition-shows-tesla-s-sudden-unintended-acceleration-is-real-and-curable-217525.html

The negative sign in Faraday's law (Lenz's law) does not mean that the EMF (or current) always points in some "negative" direction. It means that the current always flows in a way to oppose the change in flux, which is nicely illustrated in that video clip.

https://www.physicsforums.com/threads/why-the-induced-emf-is-always-negative.209132/

As posted previously this new petition will likely be dismissed as I don't think Teslas SUA problem is easily fixed as Dr. Belt suggests. Furthermore, Tesla is aware of its SUA problem, trying to fix it, and hasnt managed to yet.