Industrial Control Systems - Instrumentation Tools

How does a Redundant Controller comes in line when the Main Controller fails?

How does a Redundant Controller comes in line when the Main Controller fails in the distributed control system (DCS)? The

Override control strategies are a source of much confusion for people who first learning the concept. Perhaps the most fundamental

Let us discuss a steam-heated reactor control system with a cascade strategy, where the temperature controller drives a setpoint signal

The direction of action for a loop controller – either direct or reverse – at first seems like a very

An “override” control strategy involves a selection between two or more controller output signals, where only one controller at a

In the broadest sense, a “selector” control strategy is where one signal is selected from multiple signals in a system

A common application for select and limit functions is in cascade control strategies, where the output of one controller becomes

Another category of control strategies involves the use of signal relays or function blocks with the ability to switch between

As we have discussed, feedforward control is a way to improve the stability of a feedback control system in the

Feedforward control works by directly modulating the manipulated variable in a control system according to changes sensed in the load(s).