PWM, I&P Gain, Motor Timing etc.

[aviator493]

I'm fairly new to the 'E' world and was wondering if anyone knew of a good right up to explain things like PWM, I and P Gain, Motor Timing etc... I don't fell I have a good grasp on what to feel/llok for when adjusting these from their 'stock' setting.

Thanks!

[MrMel]

Electric motor;

think a revolving door, you hit with your arm to make it spin.
You get it going and you hit-hit-hit with a beat and the door is turning.

This is how the ESC is driving a motor, it hits it 3 times per rev.

PWM: How much "force" is applied on each hit, an ESC cannot do 50% power, it can only do ON or OFF, but it can stay longer or shorter time in ON or OFF, hence since it does it VERY fast it can make the effect of 50% power.
12khz means 12000 on/off pulses per second.

Timing, back to the revolving door, depending on when you hit you can drive it harder/faster, but of course that increase chance that you hit straight at the door and hurt your hand.
timing is the same, you get more power out but also buildup in heat, and if too much you get bad commuting and risk of danger.



for P/I general I suggest you watch these two, about gyros but the concept is the same.
[ame]http://www.youtube.com/watch?v=Y3sYUU1uuVg[/ame]
[ame]http://www.youtube.com/watch?v=usGsShpTwuQ[/ame]

It has to do with how agressive the governor should be and how fast you allow it to change.