Automatic Transmission

[gnirts]

Originally Posted by Andrew Blair

With DC motors, your shift down will, as a best reference, be decided by the current draw. If you exceed a certain current draw for a period of time, say 30 amps, you need to shift to a lower gear, should one be available. Vice-versa with the up-shift. If you are moving, and yet only pulling a few amps, you can safely up-shift. Most of your decisions about shift points will have to be determined by trial and error.

Okay, so how can I determine how much current a motor is drawing? Is it a direct correlation to a PWM value, or does it rely on other things as well?

Also, when you say shift points should be determined by trial and error, what 'trial' should I use? How will I know?

I am also still wondering about "software synchronization" and lowering motor speed after up-shifting... (see first post)

Sorry for all the questions,
Robinson Levin