Positioning Control
Stepping motor
•
Positioning mechanism is simple.
•
If load is heavy, motor may step out and
displacement can occur.
•
Motor capacity is small.
•
Precision is poor at high speed.
DC servo system
•
Positioning precision is good.
•
Maintenance is required for motor
brushes.
•
It is not suitable for rotation at high
speed.
General purpose inverter and general
purpose motor
•
Multi-speed positioning is available
using high-speed counter.
•
High precision positioning is not
available.
•
Large torque is not available at start.
(Specialized inverter is required)
AC servo system
•
Precision is good.
•
Maintenance is not required.
•
Positioning address can be easily
changed.
•
It is compact, and offers high power.
The World of Positioning Control 1
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