In a PID control loop, what is the primary role of the integral term?

In a PID control loop, what is the primary role of the integral term?

• A. It reacts to current error to reduce immediate deviation.
• B. Eliminates steady-state error by integrating past error.
• C. Predicts future error by rate of change.
• D. Limits the output to prevent saturation.

Answer: (B)