I want to make a Linear actuator for underwater application. How can I use M200 motor and ESC to control speed? Specially for linear actuator within 500 RPM.
Hi @mnpmilan -
Since the M200 has a minimum RPM that is fairly high, you’ll likely want to use a gear train to reduce it’s rotation rate before driving a threaded rod used in a linear actuator. You may find using a ESC with field oriented control (FOC) or a rotary feedback sensor can improve the performance at low RPM, however be sure to keep the maximum current and voltage within specifications to not damage the motor.
I’m not sure what you mean by
linear actuator within 500 RPM
the minimum RPM for the M200 is likely about this if not higher when used with a BasicESC.
A rack and worm gear could be another option but might be an overbuild and too heavy for your application your trying to use it for. This assembly does move/push/smash a substantial load however. Acme screw rod works well also. On a light build budget the threaded rod (fine thread) might be best for weight and simplicity with easily sourced material. All in your aim of purpose for the actuator.