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closed system
closed.
A closed system is one where there is no mass entering or leaving the system.
a closed system
A closed system
closed loop system
Yes it is
The closed loop control refers to a system whereby an input forcing function is usually determined in part by the system response.
A Closed loop system basically will have a feedback which enables the rectification of the error in the main process,whereas it is not possible in an open loop system
stability and repeatability
yes
A closed system is termed as a control mass because it does not exchange mass with its surroundings. This means that no mass enters or leaves the system, and therefore the total mass within the system remains constant. This allows for the analysis of the system's energy changes and thermodynamic processes in isolation, making it a control mass for studying energy transfers and conservation.
I assume a "standing fan" is just a fan that moves air. It might have a few settings such as oscillate or slow, medium, fast for the fan speed. This is an open loop control system. There is nothing telling a controller that the fan is oscillating or not, nor is there a mechanism that is telling the fan that it is on slow, medium or high. If the fan were to have a temperature sensor on it that would apply power if the temp went above the preset limit, this could be described as a closed loop system.
Amphibians have closed circulatory system Closed
A closed loop control system is a set of mechanical or electronic devices that automatically regulates a process variable to a desired state or set point without human interaction. Closed loop control systems contrast with open loop control systems, which require manual input.
Open loop (single cycle) involves a break requiring a restart, easily adapted to closed loop.
The Nyquist stability criterion, named after Harry Nyquist, provides a simple test for stability of a closed-loop control system by examining the open-loop system's Nyquist plot. Under many circumstances, stability of the closed-loop control system may be determined directly by computing the poles of the closed-loop transfer function. In contrast, the Nyquist stability criterion allows stability to be determined without computing the closed-loop poles