Proportional-Derivative (PD) Control

Proportional-Derivative (PD) control is a method used in automation to guide a system toward a desired state. It combines two actions: the proportional part reacts to current error—that is, how far the system is from the goal—by providing an output proportional to that distance. The derivative part anticipates future error by analyzing how fast the current error is changing, helping to prevent overshoot or oscillations. Together, PD control adjusts the system smoothly and accurately, ensuring it reaches and maintains the target position or condition efficiently.