AAE Archives - Control Station

How CLPM Can Optimize Throughout a Lifecycle of Optimization

By Control Guru | June 4, 2021

It may be helpful for production staff to view optimization as it really is: A never-ending project. Indeed, there is no fixed finish line. Those assigned to optimization need to…

Using Average Absolute Error to Uncover Tuning Issues

By dennisnash | January 20, 2016

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 for the better or they can change for the worse. [ . . . ]

Using the Oscillation Metric to Uncover Tuning Issues

By dennisnash | November 23, 2015

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 uncover PID controllers that require tuning in particular. Capitalizing on that resource can help manufacturers keep their processes within designated constraints and avoid out-of-spec production.

What is Variance? What Metrics are Useful in Identifying Process Change?

By Control Guru | June 21, 2014

Ever walk onto the production floor and just sense that something was different? Whether it was something you saw, heard or even felt, a certain sixth sense kicked in and triggered an alert something’s changed. With what takes place at a production facility change is an everyday occurrence. Considering the typical facility’s size, the interconnected unit operations, the network of piping and instrumentation, and the nonstop throughput, there’s no avoiding change. In fact, a key part of the job is simply staying one step ahead of it.