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← TechnologyWhich outcome typically follows corruption of PID constants programmed in a PLC controlling an industrial robot arm?
A)Unpredictable arm movement occurs✓
B)Encoder feedback signal degradation
C)Increased motor winding resistance
D)Coolant system pump failure
💡 Explanation
If the PID constants are corrupted, the closed-loop control system fails to regulate motor torque because the implemented *feedback loop* will behave erratically. Therefore, chaotic movements happen, rather than normal operation allowed by correctly controlling the trajectory with appropriate tuning.
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