What is another name for a feedback loop?

A feedback loop is best described as a closed loop system because it incorporates the principle of using feedback to control the process. In closed loop systems, output information is fed back into the input, allowing for adjustments or corrections to be made based on the performance of the system. This continuous monitoring and adjustment help to maintain the desired performance of the system and increase reliability and efficiency.

In contrast to closed loop systems, open loop systems do not use feedback to influence their operation. Instead, they operate based purely on initial input, regardless of the output results. This distinction is essential because feedback is what allows closed loop systems to respond dynamically to changes in conditions or demands.

Control loop is a broader term that can refer to both open and closed loops in terms of controlling processes but does not specifically highlight the feedback aspect.

Direct loop is not a commonly used term in instrumentation and control theory, making it less relevant to the concept of a feedback loop. Hence, closed loop remains the most accurate name for a feedback loop due to its dependence on output feedback for regulation and improvement.