# Arduino Forum

## Topics => Robotics => Topic started by: zaciatok on Jan 23, 2013, 03:35 pm

Title: Mathematical model for DC Motor
Post by: zaciatok on Jan 23, 2013, 03:35 pm
Hi there:
I would like to ask you if it is possible to obtain the mathematical representation of a DC motor using a potentiometer connected to the motor shaft and Arduino UNO board.

Technical Parameters:
the potentiomer can be turned from 0 to 300 degrees.
DC motor voltage 7V.
Arduino UNO board.
Motor shield.

Can somebody help me with this?
Title: Re: Mathematical model for DC Motor
Post by: PaulS on Jan 23, 2013, 05:13 pm
Quote
I would like to ask you if it is possible to obtain the mathematical representation of a DC motor

The mathematical representation of a piece of hardware? What are you talking about?
Title: Re: Mathematical model for DC Motor
Post by: zaciatok on Jan 23, 2013, 05:39 pm
Yeah ! exactly !
But I dont know if that is possible with the things I have.
SOS
Title: Re: Mathematical model for DC Motor
Post by: PaulS on Jan 23, 2013, 05:52 pm
Quote
Yeah ! exactly !

Yeah ! exactly ! what? What do you mean by "mathematical representation"? Points have mathematical representations. Lines, surfaces, etc. have mathematical representations. Cars, planes, boats, and motors do not.
Title: Re: Mathematical model for DC Motor
Post by: zaciatok on Jan 23, 2013, 06:33 pm
:(
Title: Re: Mathematical model for DC Motor
Post by: zoomkat on Jan 24, 2013, 01:25 am
Quote
I would like to ask you if it is possible to obtain the mathematical representation of a DC motor using a potentiometer connected to the motor shaft and Arduino UNO board.

Probably not, way to vague idea of what you are seeking.
Title: Re: Mathematical model for DC Motor
Post by: patduino on Jan 24, 2013, 01:50 am
Hi zaciatac,

is possible to obtain the mathematical representation of a DC motor

I originally assumed you want to mathematically describe the relationship between the pot and the motor's RPM (i.e., speed control), but not if you are going to connect the pot directly to the motor's shaft...

What parameters are you trying to correlate?