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Which risk increases when rapid deceleration overwhelms a robotic arm's PID control loop that uses quadrature encoders?

A)Kinematic singularity occurrence rises sharply
B)Encoder counts miss actual position
C)Torsional stiffness achieves maximum value
D)Back-EMF filters destabilize control voltage

💡 Explanation

Following rapid deceleration commands, a skipped encoder count can occur if the motor cannot track the requested deceleration because the inertia is too high; thus, the controller loses track of position, because the system cannot accurately close the control loop, rather than a kinematics issue.

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