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Author Topic: Selecting proper motor!  (Read 647 times)

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Offline saba_rish91Topic starter

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Selecting proper motor!
« on: August 22, 2012, 11:23:32 AM »
Hi,

I'm planning to build a line following robot and I'm unable to decide a proper motor for that purpose.

In the motor spec, it says 0.6kg-cm. What does that imply? Does it mean that it can comfortably push 600gms if the motor is attached to a 1cm radius wheel?

http://www.pololu.com/catalog/product/2212
Strike when the iron is hot!

Offline jkerns

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Re: Selecting proper motor!
« Reply #1 on: August 22, 2012, 12:32:18 PM »
Not quite that simple - yes you generate a 600 "gram" force, but a wheeled robot on a horizontal surface that weighs 600 grams does not need that much force to move.

Also, that appears to be the stall torque - the torque generated when the motor is not turning. As the motor speeds up, the torque is reduced.

http://www.societyofrobots.com/mechanics_dynamics.shtml

There is a link to a motor calculator there as well.
I get paid to play with robots - can't beat that with a stick.

http://www.ltu.edu/engineering/mechanical/robotics_engineering.asp

 


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