What is required by an open loop control system?

An open loop control system operates without the use of feedback to determine the actual outcome of a process. This means that once the system is set in motion, it performs its task based solely on the predefined input without any adjustments based on the results of the output. As a result, constant operator attention is typically required to monitor the system's performance and make manual adjustments when necessary.

In an open loop system, if any external factors or changes occur that affect the desired outcome, the system cannot self-correct or adjust automatically. Thus, it relies heavily on an operator to ensure everything is functioning correctly and to intervene if things deviate from expected results. This reliance on human monitoring is why constant operator attention is crucial for maintaining control and achieving desired outcomes in open loop control systems.