A robotic arm uses a PID controller to maintain a precise position despite external disturbances. How will the motor adjust its input based on the PID control strategy?

Correct option is B

​$$\text{A PID controller combines three control actions based on the error between the desired position and the actual position:} \\[8pt]\textbf{1. Proportional (P):} \\[4pt]\text{Adjusts the motor input proportionally to the current error.} \\[6pt]\textbf{2. Integral (I):} \\[4pt]\text{Integrates past errors to eliminate steady-state error caused by disturbances.} \\[6pt]\textbf{3. Derivative (D):} \\[4pt]\text{Acts on the rate of change of error, effectively predicting future error behavior and improving stability.} \\[8pt]\text{Thus, the motor input is continuously adjusted using current error, accumulated past error, and predicted future error.}$$​​