What are open loop control systems and closed loop control systems

1. Open-loop control refers to a system control method without feedback information. When the operator starts the system and puts it into running state, the system outputs the operator's instructions to the controlled object at once.

2. Closed-loop control refers to a basic concept of control theory. It refers to a control relationship in which the controlled output returns to the input terminal as the control in a certain way and exerts a control influence on the input terminal.

3. The difference between open-loop control and closed-loop control: whether there is feedback; whether it affects the current control. Open-loop control is generally a control activity that is completed in an instant, while closed-loop control will definitely last for a certain period of time, which can be used to judge.

Related information: "FAQ"

Extended information:

1. In order to "improve" a certain The function or development of one or some controlled objects requires the acquisition and use of information. The effect on the object selected based on this information is called control. It can be seen that the basis of control is information, all information transmission is for control, and any control depends on information feedback.

2. Closed-loop control is a control method that corrects based on the output feedback of the control object. It corrects according to quotas or standards when the actual deviation from the plan is measured.

3. The closed-loop control of the engine's electronic injection system is a closed triangular relationship between the real-time oxygen sensor, computer and fuel quantity control device. The oxygen sensor "tells" the computer the air-fuel ratio of the mixture, and the computer issues a command to the fuel quantity control device to adjust the air-fuel ratio in the direction of the theoretical value (14.7:1).

4. Open-loop control system: A system that does not feed back the control results to affect the current control. Example: Shooting - Once a basketball is released, it cannot be controlled anymore. Regardless of whether the ball goes in or not, the control activity ends the moment the ball is released.

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