PID control is a widely used feedback mechanism in industrial control systems. It combines three strategies: Proportional, which adjusts the output based on the current error; Integral, which considers the accumulation of past errors; and Derivative, which predicts future errors based on the rate of change. This combination helps maintain a desired setpoint by minimizing the error over time. The Proportional component reacts to the present error, while the Integral component addresses any persistent, accumulated error. The Derivative component anticipates future errors, allowing for smoother control. Together, these elements create a balanced and responsive control system.