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motor torque

motor torque

motor torque

(OP)
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

RE: motor torque

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

RE: motor torque

(OP)
converted newton-meter to kgf-cm.

RE: motor torque

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

RE: motor torque

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

RE: motor torque

(OP)
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

RE: motor torque

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%20Motor%20Selection%20Guide.pdf
for the stepper motor selection.\\\

RE: motor torque

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

RE: motor torque

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
www.aerotech.com

"Dedicated to the Science of Motion"

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