Tag: PID controller
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Analog PID Controller: Basic Features
PID action can be performed using either analog or digital electronic circuits. In this article we look at the fundamental features of an analog PID controller. To help us understand the basic operation of an analog PID controller, let’s consider the block diagram below: In reference to the diagram above, the measured variable from the…
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Control Modes in Automation Systems
The mode of control is the way in which a control system makes corrections relative to an error that exists between the setpoint of a controlled variable and its actual value. We have a number of ways (i.e. control modes) by which a control unit can react to an error signal and supply an output…