Human failures and limitations were no doubt a motivating factor for developing automated control systems. Control systems can act reliably, fast and effectively 24/7. Pneumatic and hydraulic actuators or solenoids and relays can take real physical actions. These actions originate from sensor data like temperature, pressure, level, flow, rotational speed, limit switches and many others.
The data are acquired in real time by control or safety systems and algorithms are programmed to take appropriate actions when needed. Like data analysts, process control engineers work with inputs, algorithms and outputs to produce appropriate actions.
