a magnetic rotary sensor with dynamic timing advance

Here is some info I have referenced before. I am a proponent of using a magnetic rotary sensor instead of Hall sensors or sensorless control. This removes a computational burden from the uC in the controller running the BLDC motor. I am using the AMS AS5047D, 4-wire SPI, 24FV32KA301 on a 1x1 inch PCB. Obviously your motor has to have a double ended shaft or some other unique means to locate the sensor, a 6mm diametrical rod magnet.

Here is a link to an ECN article
http://www.ecnmag.com/articles/2014/09/how-improve-system-efficiency-electric-motors

Here is a link to a SensorMag article
http://www.sensorsmag.com/position-presence-proximity/accurate-contactless-position-sensors-improve-performance-15356

kenkad

That's pretty interesting. Mounting the diametric magnet would be tough in a lot of motors though. It would be great for a big RC inrunner.