This is really very simple: motor current is directly proportional to motor torque, which is in turn directly proportional to acceleration (given a constant load). So the amp limit, in combination with your load, directly determines acceleration. Nothing more to it.devin wrote:i've had trouble locating documentation on the topic of predictable motor amp limit effects on acceleration characteristics.
devin wrote:i'd like to be able to write an equation to predict which amp limit settings will give a predictable wattage as close as possible to 0rpm full throttle.
if the vesc detects 0.0415 ohm winding and expected pack volts with sag is 46v, is there any way to adjust the settings for full throttle = 1000w electrical as close as possible to 0rpm?
At 0 rpm your mechanical power is also zero, so all your electrical power is turned into heat loss. If you really want to waste exactly 1000 W at 0 rpm, then limit battery current to 1000 W/46 V = 21.7 A, or for 1000 W loss in the motor, limit motor current to [P = I²R -> I = (P/R)^0.5] (1000 W/0.0415 Ω)^0.5 = 155 A.