01-Jun-2017, 11:13 AM
Looptime Discussion:
At 100% efficiency, a 2300Kv motor spins at 36,800rpm at 16v wide open.
The motors we use on 5" have 12 poles, which means that the ESC is switching 12 times per revolution, or 441,600 time per minute. (36,800*12)
This mean that the ESCs are switching at 7,360 per second at 16v wide open.
How could it be beneficial to run a looptime (hz) that is any higher than the ESC is even switching and adjusting? I can see that 8Khz could make some difference since you're now computing at the same rate as the ESC is physically working, but I see talk of 16Khz and now 32Khz coming and I'm just not understanding how there could be any real benefit...
I have tried 4K, 8K and 32K, Simply cannot see any difference from 8khz and higher frequency rates. Even 4khz is hard to notice any difference.
At 100% efficiency, a 2300Kv motor spins at 36,800rpm at 16v wide open.
The motors we use on 5" have 12 poles, which means that the ESC is switching 12 times per revolution, or 441,600 time per minute. (36,800*12)
This mean that the ESCs are switching at 7,360 per second at 16v wide open.
How could it be beneficial to run a looptime (hz) that is any higher than the ESC is even switching and adjusting? I can see that 8Khz could make some difference since you're now computing at the same rate as the ESC is physically working, but I see talk of 16Khz and now 32Khz coming and I'm just not understanding how there could be any real benefit...
I have tried 4K, 8K and 32K, Simply cannot see any difference from 8khz and higher frequency rates. Even 4khz is hard to notice any difference.