A closed loop system gives a comparison with the desired condition by using what method?

In a closed loop system, feedback is the method used to compare the current state of the system with the desired condition. Feedback involves measuring the output or performance of the system and then sending that information back into the system's controller. This information allows the system to make adjustments to maintain or achieve the desired condition.

For instance, in a temperature control system, the feedback mechanism would involve sensors measuring the current temperature and relaying that information to a controller. If the temperature deviates from the set point, the controller uses this feedback to adjust the heating or cooling elements accordingly. Therefore, feedback is a crucial component that enables a continuous evaluation and adjustment process to ensure the system operates effectively and meets its desired goals.

In contrast, control signals, guidance, and monitoring might be related concepts, but they do not define the fundamental comparison process integral to a closed loop system. Control signals may refer to commands sent to actuators based on feedback, guidance could refer to direction or support for system operations, and monitoring typically involves observing system performance rather than making direct comparisons necessary for feedback.