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Universal Robots UR5/CB3 - Page 168

Universal Robots UR5/CB3
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14.5 Command: Fixed Waypoint
WP_1
WP_2
WP_3
Figure 14.7: Blending from a movement in joint space (MoveJ) to linear tool movement (MoveL).
time requirements into account. Due to this, they may deviate from the course specified by
the waypoints. This is especially the case if there are significant differences in a joint’s velocity
between the two trajectories. Caution: if the velocities are very different (e.g. by specifying
advanced settings - either velocity or time - for a specific waypoint) this can result in large
deviations from the original trajectory as shown in figure 14.8. If you need to blend between
different velocities and cannot accept this deviation consider a blend in Cartesian space using
MoveL instead.
v1
v2
v1 << v2
WP_1
WP_2
WP_3
WP_1
WP_2
WP_3
v1
v2
v1 >> v2
Figure 14.8: Joint space blending when initial velocity v1 is significantly smaller than final velocity v2
or the opposite.
e-Series II-76 Version 3.11
Copyright © 2009–2019 by Universal Robots A/S. All rights reserved.

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