Quote:
Originally Posted by johnrobholmes
Couldn't you just send a small pulse to two or three coils to sense position when stopped? I noticed that the quark ESC would always make an outrunner hum a bit when idle. It also started up outrunner like a champ with no audible noise.
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I think it was sending very small current to sense the BEMF to determine rotor position. It would be cool to see a programmer stuff something like a memory that actually remembers where the rotor was at the time it stopped and when you give it throttle, it would be smooth. Every day that goes by, I regret more and more not getting the electronic engineering class (that also included programming) when I had the chance. I've heard from many places that makes ESC that a HV controller would need to have sensors to accurately know where the rotor is at all times and this is where I hope and wish Aveox makes a comeback. It was one of only a handful of companies that had big 5mm shafted 4 pole sensored motors.