man, this is the stuff everybody should be posting up. i prefer the way you did the youtube, just open in a new tab, but the page loads faster without the youtube imbed.
i assume this is an industrial motor application? ECM means electronic motor control?
can you talk about how open loop really works, and how your controller's process is different?
i expect maybe it is proprietary, so maybe you are limited in how much you can talk about this stuff.
but just wondering if we could go back and look at the other sensorless hacks. maybe i should order one from keywin and look at it too. would be neat to come up with a DIY solution originating on the sphere