What describes "drift" in control systems?

Drift in control systems is characterized by a gradual change in sensor or actuator performance over time. This phenomenon can occur due to several factors, such as environmental conditions, aging of components, or sediment buildup in sensors, among others. As components do not perform at their original specifications, the output can slowly shift from its intended value, leading to discrepancies in system performance.

This gradual change can impact the accuracy and reliability of a control system’s operation, necessitating regular calibration and maintenance to ensure that measurements and actuations remain within acceptable limits. Understanding drift is crucial for technicians, as recognizing and addressing these changes is essential for maintaining system stability and precision.