Process control block diagram
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About this process control block diagram
The following diagram depicts a simple process control system; an important concept in engineering used to control processes.
It comprises several essential elements in which some are, Input which represents the desired or set-point value that system tries to reach. Error Detector which compares the input with feedback signals to obtain error signal, which is the difference between input and output.
Controller makes a decision based on the error signal and generates a control signal to change the process following an algorithm that aims at minimizing the error. Plant which the system or equipment in direct control, which response to the shift in the control signal.
This process control system feedbacks main aim is to reduce the gap between the set and observed outputs by constantly altering the control signal to keep the process at the set point. This simplest kind of process control system is an important component in numerous variations of industries such as temperature control, motor speed regulation, and many more processes of automation.
