Author Topic: Physics/Mechanics, converting torque to rpm  (Read 948 times)

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Offline nForceTopic starter

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Physics/Mechanics, converting torque to rpm
« on: July 26, 2019, 08:18:49 pm »
I would like to know what is "mechanical dynamic equation" in mechanics and engineering to convert from torque to rpm? I know the relation T = J*alpha. But how to include motor characteristics for example slip (induction motor), friction, number of poles,  mutual inductance?

Thanks.
 

Offline ArthurDent

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Re: Physics/Mechanics, converting torque to rpm
« Reply #1 on: July 26, 2019, 09:38:53 pm »
Here is an explanation of the relationship between torque/RPM but your question appears to be multi-part, too general, and not easy to solve in a brief time.  http://www.epi-eng.com/piston_engine_technology/power_and_torque.htm
 

Offline IanB

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Re: Physics/Mechanics, converting torque to rpm
« Reply #2 on: July 26, 2019, 09:54:46 pm »
I would like to know what is "mechanical dynamic equation" in mechanics and engineering to convert from torque to rpm? I know the relation T = J*alpha. But how to include motor characteristics for example slip (induction motor), friction, number of poles,  mutual inductance?

In the physics of linear motion you have:

  (power) = (force) x (speed)

There is a direct equivalent for rotational motion:

  (power) = (torque) x (rotational speed)

In each case you have to use consistent units of measure. So for linear motion you may have:

  power [W] = force [N] x speed [m/s]

For rotational motion:

  power [W] = torque [N m] x rotational speed [rad/s]

These are the mechanical equations.

For electrical equations you will need to consult an electrical engineering text.
 

Offline ahbushnell

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Re: Physics/Mechanics, converting torque to rpm
« Reply #3 on: July 26, 2019, 09:57:10 pm »
I would like to know what is "mechanical dynamic equation" in mechanics and engineering to convert from torque to rpm? I know the relation T = J*alpha. But how to include motor characteristics for example slip (induction motor), friction, number of poles,  mutual inductance?

In the physics of linear motion you have:

  (power) = (force) x (speed)

There is a direct equivalent for rotational motion:

  (power) = (torque) x (rotational speed)

In each case you have to use consistent units of measure. So for linear motion you may have:

  power [W] = force [N] x speed [m/s]

For rotational motion:

  power [W] = torque [N m] x rotational speed [rad/s]

These are the mechanical equations.

For electrical equations you will need to consult an electrical engineering text.

on the money
 


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