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BrianG · 12.22.2008, 05:24 PM

Thomas, I think we (or at least I) would like a more technical explanation about how timing, punch control, and start power settings work.

For example, when I mash the throttle at a stop, the transmitter goes from neutral (~1.5ms) to WOT (~2ms) in a blink. However, how does the ESC respond to that, and what do those settings do internally to the ESC to affect that?

I see it like this:

Timing: Is this kinda like advancing the timing on a 1:1 car; where the motor signal pulses are more or less "ahead" of the rotor position to get it to spin faster?

Punch control: Does this take the instantaneous change in throttle input and ramp it up over a longer time instead, kind of like an integrator in an op-amp? So, even though the trottle goes from neutral to WOT in 1ms, the ESC ramps that up over say 50ms.

Start power: I really have no idea here. Is this some sort of current limiter? Or does the ESC send larger PWM pulses to the motor to get it running?

	(#6)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	12.22.2008, 05:24 PM Thomas, I think we (or at least I) would like a more technical explanation about how timing, punch control, and start power settings work. For example, when I mash the throttle at a stop, the transmitter goes from neutral (~1.5ms) to WOT (~2ms) in a blink. However, how does the ESC respond to that, and what do those settings do internally to the ESC to affect that? I see it like this: Timing: Is this kinda like advancing the timing on a 1:1 car; where the motor signal pulses are more or less "ahead" of the rotor position to get it to spin faster? Punch control: Does this take the instantaneous change in throttle input and ramp it up over a longer time instead, kind of like an integrator in an op-amp? So, even though the trottle goes from neutral to WOT in 1ms, the ESC ramps that up over say 50ms. Start power: I really have no idea here. Is this some sort of current limiter? Or does the ESC send larger PWM pulses to the motor to get it running?