motor torque

[invetech]

frequency 10 Hz
Amplitude 0.0005 meters
max acceleration 1.97392088 m/s/s =Amplitude X power(2 X PI() X f, 2)
Mass 1 Kg
Force acceleration 1.97392088 nt f=ma

Torque @ 0.5mm 9.86960E-04 nt m Torque = Force X Distance

in Kgf cm 0.010071025 Kgf cm

Is this calculation correct, actually I wan to decide a stepper motor for my application

 

[jbartos]

Suggestion: Please, how did you get:
0.010071025 Kgf cm

 

[invetech]

converted newton-meter to kgf-cm.

 

[jgh37]

IN metric is 9550*T/N
T=Nt.m
N=Rpm/min(rotation speed) according to frequency.

 

[jbartos]

1 Newton-meter=0.1019716 Kilogram-force-meters
1 meter = 100 centimeters

 

[invetech]

Yes,

The conversions are correct.

9.8698x10^(-4) N-m = 9.8698x10^(-4)/9.8 Kgf-m
= 1.007102x10^(-4)Kgf-m
= 0.01007102 Kgf-cm

Since it was too low so I thought must have made some calculation error.

Thanks

 

[jbartos]

Suggestion:
Force acceleration 1.97392088 nt f=ma

Torque @ 0.5mm 9.86960E-04 nt m Torque = Force X Distance
///Torque @ 0.5mm = Force x Distance = 1.97392088 nt x 0.0005 m = 0.00098696 nt-m.
Your calculation is about correct.
Then, visit

http://www.nipponpulse.com/Stepper Motor Selection Guide.pdf

for the stepper motor selection.\\\

 

[invetech]

Thank you very much for the effort and the motor selection website.

 

[SERVOCAM]

First, anytime you are sizing for Servo's or Steppers, Acceleration Torque is define

Torque = inertia x rotational acceleration

Using force x radius will give you a static torque if the load is vertical (being raised or lowered) or has an acting force applied to it. Instead of me going into all the details, there are many sizing software packages out there that can help you and many Engineering references that can help you. Most Motion Control Mfgs. will have formaulas in their catalogs. Even mine does, check out:

http://www.aerotech.com/psd_cat/psdtoc.html

I can give names/links of others if interested.


Cameron Anderson
Sales & Applications Engineer
Aerotech, Inc
St. Paul, MN

http://www.aerotech.com

"Dedicated to the Science of Motion"