While discussing fundamentals of process control, we come across two important and fundamental concepts: (i) Open Loop Control System and (ii) Closed Loop Control System. Open loop control system is also known as feedforward control. And, the closed loop control system is also called feedback control. Closed loop or feedback control is more commonly used […]
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Process Control Loop – components [Process control & Instrumentation primer]
Most basic process control systems consist of a control loop as shown in Figure 1, having four main components: A measurement of the state or condition of a process A controller calculating an action based on this measured value against a preset or desired value (setpoint) An output signal resulting from the controller calculation, which […]
