H u d s o n M a n u a l / R e v . 1 . 2 1
5
T
EKNIC
,
I
NC
.
T
EL
.
(585)784-7454
What are Hudson Motors?
Hudson motors have been called (more or less correctly) all of the following:
•
BLDC
motors
•
Three-phase, permanent magnet motors
•
Synchronous, permanent magnet motors
•
AC servomotors (AC because electronic commutation requires a
sinusoidal current to produce constant torque, not to be confused
with AC induction motors)
•
DC servomotors (presumably to distinguish them from AC induction
motors)
•
3-phase
servomotors
Technically speaking, Hudson motors are:
Three-phase, synchronous, permanent magnet,
brushless servo motors.
Definitions
"Servo Motor"
refers to a motor that uses one or more feedback devices
(encoder, Hall effect sensors, etc.) to control torque, velocity, and/or position
in a closed loop manner.
"Brushless"
, aside from the obvious, means the motor requires a drive
(amplifier) that supports electronic, non-contact commutation.
"Permanent Magnet"
means that the motor has permanent magnets affixed
to the rotor (brush motors typically have permanent magnets affixed to the
stator).
"Synchronous"
means that the rotational speed of the electromagnetic field
is the same as (i.e. synchronous with) the speed of the rotor. There is virtually
no “slip” between them.
“3-phase"
means the motor has three separate stator windings connected
together in a delta or wye configuration.
