Which risk increases when using PID control with an excessively high derivative gain in hydraulic actuator positioning?

💡 Explanation

When derivative gain is too high, the PID controller amplifies high-frequency noise in the feedback signal because derivative action calculates the rate of change, and noise has rapid fluctuations. Therefore increased noise susceptibility results, rather than reduced error, faster response, or decreased overshoot, which would require balanced gain tuning.

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