— 6-5 —
6.3.2. Using a “Dummy” Load
l When you have to drive the Motor with a low-stiffness load, you may not be able to avail of the
merits of the Megatorque Motor System. In some cases, a little rearrangement of mechanical
design may help. Try to add some load (“dummy” inertia) to the rotor directly.
u Example 1 : Load is connected using keyway.
Figure 6-3 : Using Keyway
“Dummy”
u Example 2 : Load is directly attached but the shaft diameter is too small.
(Torsional vibration may occur.)
Figure 6-4 : Using Small-Diameter Shaft
“Dummy”
u Example 3 : Driving ball screw. (Inertia of the whole mechanism is very small.)
Figure 6-5 : Driving Ball Screw
“Dummy”
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