Automating Manufacturing Systems - Process Control and ...

continuous actuators - 24.21
cally accelerate to infinite speeds if unloaded. This makes the dangerous
when used in applications where they are potentially unloaded.
- these motors typically have greater starting torques that shunt motors
I a
=
V
---------------- a
R a
+ R f
2
T = K t
I a
φ = K t
I a
where,
I a
, V a
= Armature current, voltage
R a
, R f
= Armature and field coil resistance
T
K t
=
=
Torque on motor shaft
Motor speed constant
φ =
motor field flux
ω
stall torque
T
www.PAControl.com