- Joined Nov 1, 2017
I have a drill press but the speed of rotation depends on the torque output of the motor. It means that if I put more load, the output speed will go down. I want to have a simple way to keep a constant speed of rotation and make it independent of the load torque. The above circuit might work. What is your idea? For now, I have already think of several issues with this design.
1. The RC constant must be quite large to accoumodate for the minimum rotation speed of the motor, unless I use a rotation encoder or high gears instead of a simple magnet. This means that the feedback loop control will be hard to do or there will be overshoot or undershoot at transient.
2. There might be capacitive coupling between the magnet (ground) and the coil. I might need a good electostatic shield but not magnetic shield.