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RE: General getting-started BLDC driving/control questions

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Possible with sensorless
•RPM, for continuous motion, from very slow speed (how slow is the real discussion) to max motor RPM.
•Acceleration/deceleration curves.

Additionally Possible with hall sensors
•Hold position, like a stepper motor.

Additionally Possible with encoder
•Count "steps", i.e., changes in pole positions (with n pole pairs per rev)
•Single "step", like a stepper (where this will correspond with a small output angle, determined by n and the gear ratio
•"Micro step" (Is this practical with a BLDC motor?)


Not sure what you mean by this one
•Force control/feedback by modulating/measuring drive current (via PWM I presume)


For most of what you want to do I would recommend using stepper motors. Either sensorless or with an encoder. If you want to use BLDC you pretty much need to use motors with encoders.

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