Motors - Segway PT x2 Reference Manual

Motors

Figure 13 shows the location of the Motors.
Each Wheel is independently driven by redundant, high-speed
electric Motors that are quiet and efficient. Each Motor is computer-
controlled to precisely regulate the Segway PT's motion.
Each Motor is wound as two separate electrical circuits, capable of
independent operation, acting as one mechanical entity. If either
winding in a Motor fails, the Segway PT will perform a Safety
Shutdown.
For more information on Safety Shutdown, see "Safety
Shutdown" on page 55.
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Figure 13. Location of Motors