Transmission electronics

To the gear-teachers.

How is the automatic transmission specifically controlled?

1.The torque is measured (no idea such as)
The motor control unit gives the motor control unit the
the control unit the switching commands.

2.Like 1. only that the torque is calculated (true
(i.e.
If the twist. but will be calculated values
used (probably LMM and a few givers).
Since these sensors/feelers are often very inaccurate
This would have to be done in the future.
Drive the gear.

3.Maybe the transmission is also very different.
The Commission has already taken a decision.
The switching point is determined by the speed and the
Motor control unit takes off at the moment of switching
only the torque a bit back, so that the lamellas do not
wear out.

Of course, these are all just assumptions from car manufacturers.
I don't know what's going on.

Maybe someone can bring light to the dark.

So long