Category Archives: Theory
What is a PLC or Programmable Logic Controller?
Introduction PLC:s are a form of industrial control hardware that is very rugged in its construction. PLC:s are used to control everything from small packing machines to complete assembly lines in every imaginable industry. There is a sister category of controllers that are called RTU:s, which stands for Remote Terminal Unit. RTU:s are very similar […]
Continue readingWhy HMI:s should be made intuitive
Take a look at the picture above and try to imagine how long it took the astronauts to learn the position and function of every button on there. The picture is of the interior of Apollo 11’s Command Module “Columbia” . Photographer Eric Long, Courtesy of the Smithsonian’s National Air and Space Museum I am […]
Continue readingSoftware based PID regulators
Introduction What is a PID regulator? The short answer is that it is an automated control function. The long answer could fill a couple of textbooks. Because of this I won’t delve to deep into the subject but I have an upcoming project that utilises a PI regulator so writing some form of introduction seemed […]
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