Is the Harris Index Right for Your Loop Assessment Needs?
Predicting the weather is difficult – just ask a meteorologist. Even with the help of advanced analytics few seem to get it right with consistency – just ask any parent
What is the Industrial Internet of Things (IIoT)?
If you’ve investigated manufacturing trends recently, then the Industrial Internet of Things (IIoT) has probably caught your attention once or twice. IIoT capitalizes on a range of communication and automation
Data Collection Speed is Key to the Accurate Interpretation of Process Dynamics
If you’re old enough to remember silent movies, then you know what it’s like to see the characters seemingly jiggle around the screen. Black spots would randomly appear as the
Using Percent Time in Normal to Uncover Tuning Issues
Even Simple Metrics Such as Percent Time in Normal Reveal Issues that Negatively Affect Performance and Signal the Need for Controller Tuning It’s easy to get tripped up if a shoelace
Using Average Absolute Error to Uncover Tuning Issues
Average Absolute Error (AAE) Provides an Intuitive Alternative to Variance and Simplifies the Assessment of Changes in PID Controller Performance.
Quite simply, things at a manufacturing facility can change
Using Mode Changes to Uncover Tuning Issues
Poor Controller Tuning. Operator interventions and Mode Changes are often viewed negatively. When a PID loop is switched out of automatic there can be a sense that the controller wasn’t allowed
Using the Oscillation Metric to Uncover Tuning Issues
There’s a wealth of information available in most every data historian. The data can be used to evaluate the performance of a plant’s regulatory control systems in general and to
Common Industrial Applications of PID Control with Filter
Other Questions. Sometimes controller design feels like a choice between the lesser of not two but three evils. P-Only Control is simple and provides a fast response, but the resulting Offset
Common Industrial Applications of PID Control
A previous post about the Derivative Term focused on its weaknesses. As noted, the primary challenge associated with the use of Derivative and PID Control is the volatility of the
Common Industrial Applications of PI Control
Studies show that when individuals are given a set of three options they are instinctively biased to prefer the middle one. When this finding is applied to purchasing behavior a