Control system

System that manages the behavior of other systems / From Wikipedia, the free encyclopedia

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A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines. The control systems are designed via control engineering process.

Loaded_centrifugal_governor_%28New_Catechism_of_the_Steam_Engine%2C_1904%29.jpg
The centrifugal governor is an early proportional control mechanism.

For continuously modulated control, a feedback controller is used to automatically control a process or operation. The control system compares the value or status of the process variable (PV) being controlled with the desired value or setpoint (SP), and applies the difference as a control signal to bring the process variable output of the plant to the same value as the setpoint.

For sequential and combinational logic, software logic, such as in a programmable logic controller, is used.[clarification needed]

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