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Chapter 3 Robot Motion
3-5
3.2.5 Execution Time Difference among Pass Motion, End
Motion and Encoder Value Check Motion
Among the three motions, the pass motion has the fastest execution time,
followed by the end motion and finally the encoder check motion.
The pass motion starts the next acceleration motion during deceleration time
before it reaches P2 as is shown in Fig. 3-9. Therefore, the execution time is
shorter than the end motion, which executes deceleration and acceleration
individually.
In the encoder value check motion, because the robot strictly checks reach of
the destination position with the encoder value, it requires more time to
eliminate servo deviation than the end motion does.
Fig. 3-9 Execution Time of Pass Motion, End Motion and Encoder Value
Check Motion
The pass motion is fastest
because it overlaps
deceleration and
acceleration at P2.
The encoder value check
motion takes longer time
than the end motion,
because it executes
deceleration and position
check at P2 and P3.
The end motion executes
deceleration and
acceleration individually at
P2.
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