Replacing a motor under load-torque with 2 motors to give similar performance

Other Hardware Motors, Mechanics, Power and CNC
1

Hi,

I have the following setup: A servo DC motor which is connected to a drum and the drum drives a conveyor belt. There is a pulley at the other end of the belt which is the same radius as the drum. There is a load placed securely on the belt so that there is no slipping. The load is accelerated or decelerated from rest. But i want to replace the single motor with 2 smaller ones and place each one at the end of the belt with identical servo DC motors, so that the combined performance of the 2 smaller motors are equivalent to the single big motor. So, what differences between the characteristics of the big motor and the two smaller motors should i be looking for?

Here are the characteristics of the big motor:
Tm = time constant
Km = steady-state gain

I'm not sure if i'm missing anything else? :confused:

So, my approach to find two smaller motors would be such that each motor would give me half of Tm and half of Km. Am i correct?

2

Seems like a lot of work to break a working setup for unknown reason.

Your going to find out it’s like water pipes, two 1/2 pipes do not come close to the flow of a 1inch pipe.

Add in your never going to get them exactly timed so one baby size motor will have moments of full stall load and full deceleration loads placed on it while the other helper motor will be thankful.

3

DryRun:
A servo DC motor

What exactly does that mean?

Please post a link to the motor datasheet.

...R