A simple control system drawn in block diagram form looks like this: Information from the measuring device (e.g. transmitter) goes…
In a manually-controlled process, a human operator directly actuates some form of final control element (usually a valve) to influence…
Tuning a Temperature Process Control Loop Ziegler-Nichols open-loop tuning procedure This next simulated process is a temperature control process. Performing…
Ziegler-Nichols open-loop tuning procedure The next simulated process I attempted to tune was a liquid level-control process. Performing an open-loop…
Purpose of each Controller action Proportional action is the “universal” control action, capable of providing at least marginal control quality…
Knowing which control actions to focus on first is a matter of characterizing the process (identifying whether it is self-regulating,…
From the initial open-loop (manual output step-change) test, we could see this process contains multiple lags in addition to about…
The closed-loop, or “Ultimate” tuning method of Ziegler and Nichols was applied to this process. Eliminating both integral and derivative…
The first process tuned in simulation was a “generic” process, unspecific in its nature or application. Performing an open-loop test…
When performing heuristic tuning of a PID controller, it is important to be able to identify a condition where one…
