To size a electric motor for a
particular drive application the designer must first
analyze the mechanics of the drive application. The
following must be determined:
Friction of the bearings, or other
mechanical elements.
The weight or load to be driven by the
electric motor.
Inertia of the mass to be moved or
controlled. Acceleration and deceleration forces
should be analyzed.
Mechanical system type and number of
linkages.
Friction -The friction may be determined
by estimation, component specification or by measuring by
use of a torque reading device or mechanism.
Weight or Mass - The mass may be
calculated using 3D CAD, specification or direct
measurement.
Inertia - Inertia is the force
required to accelerate or decelerate a mass. Inertia
is used to calculate the motor torque required to operate
the mechanical system.
Mechanical System - There are roughly four
categories of mechanical drive systems
