We have a DC motor on a coil blanking feed line. Once a cycle is completed the motor is fluttering causing the feed to be short/long. The raw supply is AC that is converted to the DC motor. We don't currently have any filters or rectifiers in the supply to.the motor. Could that solve the issue?

 

A bit more detail needed,!
More on the motor and what/how is it exactly being fed or controlled?
L.S. etc?

 

Welcome to AAC.

The raw supply is AC that is converted to the DC motor. We don't currently have any filters or rectifiers in the supply to.the motor.

This is self-contradictory. If the AC is being converted to DC then there is a rectifier involved.

I also don't understand how at "the end of the cycle" the motor would be doing anything, could you explain what you mean by that?

In general, yes, if you need the motor to behave predictably at very small tolerances, it is going to have to be fed with clean DC. But I don't understand the context unfortunately. As @MaxHeadRoom said, more detail is needed to help.

 

Fora stable accurate speed control of a DC motor with a changing load you must have a feedback speed control. That means some scheme to monitor the motor speed and feed that signal back to a controller. The good news is that such systems are widely available from many different suppliers and sources. Some of those suppliers are both skillful and honest. Many are neither skilled nor particularly honest.

 

We have a DC motor on a coil blanking feed line. Once a cycle is completed the motor is fluttering causing the feed to be short/long. The raw supply is AC that is converted to the DC motor. We don't currently have any filters or rectifiers in the supply to.the motor. Could that solve the issue?

What is the current means of control?
Do you have a circuit to post?