I am also working on an almost similar research but the challenge is on providing the required torque given the size of the available DC Motors and Servo motors.
DC (Shunt) motor would be the best for achieve variable torque with better control of same size(volume) servo motor, and would be operated with battery cell.
One suggestion is that you may think about the feasibility of providing suitable gear box by which you can multiply the torque output at the cost of reduction in the speed.If your application demands medium or low speed , choose a small motor with reasonable speed and provide a gear box to the shaft of it in order to reduce the speed and increase the torque output. Many servo motor vendors provide suitable gear box along with motor.
Hello Talon,
It should be possible to make your own servo system, using available components.
- Either DC motor, and then a current-drive controller.
- Or a permanent magnet motor and an inverter.
- You can also do asynchronous motor + inverter.
(permanent magnet is better, but maybe more difficult to get.)
Can you give some detail about your servo system ?.
- Torque required
- Motor speed (rpm) required
- Some detail on the loop. What loop bandwidth ?, what loop noise is tolerated ?.
- How much effort can you put in the design of the solution ?.
Best Regards,
Henri.
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