Simulation Of Dc Motor

Modelling equations of DC motor vf

Rf

kv

Laf

f

pkv where R f

rfx External resistance va

kv

Te

kv ia where kv L ff

f

Rf

r

,

ia ra

a

ra a pia Laf i f

Laa Ra

From the above equations Laf Rf kv vf p 1 f 1 r

Jp Bm

Te TL

rfx

rf

Laf /(rf * tf1)

kv=Laf * if

1 s

vf Subtract 1

if

1/Laf

Integrator

if

Gain 2

Gain

1/tf1 Gain 4 1/(ta 1*ra) Product 1 Gain 8 ia ia

1 s

1/(ta 1*ra) va

Integrator 3 Gain 1

Subtract 2 Product

1/ta 1

Te

Gain 6

Te

1 s Load Torque

Subtract

Integrator 1

Bm /J Gain 3

30 /pi speed Gain 5

Speed

Input data La=0.028; ra=2.581; rf=281.3; Lf=156; Laf=1; J=0.02215; Bm=0.002953; tf1=Lf/rf; ta1=La/ra;