Using PWM to control a DC motor (brushed) wants to control the motor down to 1r/min. I wonder if it is feasible? (When the motor is directly energized, 100r/min 24V 25W).
The current experimental result is 12R/min at 20KHZ 68%.
First time production, I would like to ask:
1. Can ordinary DC motors achieve 1r/min?
2. How to calculate the minimum speed of the motor? (Formula or data).
3. Under PWM control speed, how much torque drops at low speed?
Please help to answer. Thank you! ! ! !
Felipe Veröffentlicht am January 15, 2021
1. At such a low speed, the coil is easy to burn, I know that the ultrasonic motor can be very low speed.
2. The speed is measured by a motor such as a rotary encoder or a code disc.
3. There is a torque calculation formula, but you can't remember it. Check the information.
Clark Veröffentlicht am January 15, 2021
Low speed, high power consumption, large current
Clare Veröffentlicht am January 15, 2021
Make a speed test, the lowest speed is up to you
