Hello, I'm planning a project and I am going to need to control the rotational speed of an electric motor very accurately. Is there an easy way to do this? I was thinking about some sort of comparative op-amp but don't really understand.Also, I need the motor to be able to change speed very quickly, ie accelerate and decelerate to the required angular velocity. Is this quality the torque? Thanks
There are many types of electric motors and the answer will depend on what type you are talking about: DC motor, AC motor, stepping motor, synchronous motor, etc. A DC motor speed is controlled by the voltage applied. To control the speed accurately you would need some sort of sensor that would measure how fast it is going. I suggest that you look into stepping motors if you need to control the speed accurately.
If it is an AC motor I would purchase a variable frequency drive from Grainger.
