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Which limitation affects trajectory precision in a robotic arm using high update-rate inverse kinematics control when joint actuators exhibit significant backlash?

A)Phase margin degradation.
B)Limit cycle oscillations.
C)Singularity avoidance failure.
D)Stiction-induced instability.

💡 Explanation

Limit cycle oscillations are worsened because backlash introduces a dead zone where the positional error accumulates until a threshold is reached. This initiates abrupt movement due to the `integral windup` mechanism. Therefore continuous oscillating movement follows rather than a smooth trajectory.

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