Baldor 23H Series Installation & Operating Manual page 133

The following will show you how to easily determine the
right motor and control for any electromechanical
positioning application.
Once the mechanics of the appli-
cation have been analyzed, and
the friction and inertia of the
load are known, the next step is
to determine the torque levels
required. Then, a motor can be
selected to deliver the torque
and the control sized to power
the motor. If friction and inertia
are not properly determined, the
motion system will either take
too long to position the load, it
will burn out, or it will be unnec-
essarily costly.
Motion Control
In a basic motion-control system,
Figure 1, the load is coupled
through one of several mechani-
cal linkages to the motor.
The motor may be a traditional
DC servo motor, a vector motor,
or a brushless servo motor.
Motor speed is dictated by the
control which takes a low-level
incoming command signal and
amplifies it to a higher power for
moving the motor.
The programmable motion
controller is the brain of the
motion system. It is
programmed to accomplish a
specific task for a given applica-
tion. This controller monitors a
feedback signal to control the
position of the load. By compar-
ing a pre-programmed,
"desired" position with the
feedback position, the controller
can take action to minimize an error between the actual and desired load positions.
Application Notes
Basics of Motion
Figure 1. Basic Motion System
Figure 2. Move Profile
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