its no different than weather forecasting
if the temperature pressure, loading, rpm, viscosity, input, output, and load conditions remain the same open loop is just set and forget
if you flip the light switch the light comes on, no need to confirm that the light is on before walking down the stairs
The sensitivity of an open loop control system is always 1, it is due to no feedback involved in open loop.
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.
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
Elevators typically operate using a closed-loop control system. In this system, sensors continuously monitor the elevator's position and speed, providing real-time feedback to the control system. This allows for precise adjustments to be made to ensure smooth and accurate operation, responding to user inputs and safety requirements. In contrast, an open-loop system would lack this feedback mechanism, making it less effective for applications like elevators where precision is crucial.
An open-loop system is arbitrary, while a closed-loop system takes inputs from the environment and adjusts things accordingly. To illustrate, lets consider an electric heater. If the temperature were controlled only by an on-off switch, that would be an open-loop system. That would be inconvenient and could be a safety hazard. But if there were a thermostat, you can set the temperature to what you want, and the thermostat would respond to the temperature and turn the heating element on and off as needed.
The sensitivity of an open loop control system is always 1, it is due to no feedback involved in open loop.
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
closed loop system
The open loop system is simple and economicaleasier to constructstable
yes
Yes it is
A: By definition there is no control on a system in an open loop situation. simply . it has no feedback
The closed loop control refers to a system whereby an input forcing function is usually determined in part by the system response.
A: It is any system where there is negative feedback to control its behavior
open loop
stability and repeatability
control action independent of the output or desired quantity