How do open-loop control systems differ from closed-loop systems?

Open-loop control systems are characterized by their lack of feedback mechanisms. In these systems, the control action is independent of the output, meaning that the system does not assess or adjust its performance based on the results it produces. As a result, once the input has been provided, the system operates solely on that input without any consideration for the actual output conditions.

In contrast, closed-loop systems incorporate feedback to monitor the output and make necessary adjustments to the input to achieve the desired result. This allows closed-loop systems to be more adaptive and accurate, as they can correct errors in real-time by responding to the output conditions.

The assertion that open-loop systems do not use feedback while closed-loop systems do accurately highlights the fundamental operational difference between these two types of systems. This distinction underscores why open-loop systems may struggle with tasks that require precision, as there are no corrective mechanisms in place to accommodate variability in the output.

In summary, the key difference lies in the utilization of feedback, which is present in closed-loop systems but entirely absent in open-loop systems, making the chosen answer a clear representation of this fundamental principle.