Process Variable

  • July 30, 2019
  • Control Guru

Pulse is Okay, but Doublet is Better

The Pulse and Doublet tests both allow practitioners to observe the process moving in opposite directions, but which is better?

  • April 6, 2017
  • Control Guru

What Value is Hidden in a Plant’s Process Data

While a typical Distributed Control System (DCS) keeps a watchful eye on production and scheduling there are other important details that a DCS simply overlooks. To be clear, a

  • February 14, 2017
  • Control Guru

Pros and Cons of Higher Order Models

Modeling is a time-tested approach for decoding a process’ dynamic behavior. By understanding how a process responds to change it’s possible to apply an appropriate and timely counter measure.

  • July 19, 2016
  • Control Guru

How to Perform a Step Test

Tuning PID controllers is a multi-step process.  While it is important to understand each step in the process, performing the bump test and collecting dynamic data is the most crucial

  • September 22, 2015
  • cyrus@timberbrookfamily.com

How Can I Correct for Noise Using External Filters?

Choices, choices. In the realm of process control practitioners are regularly forced to choose between competing options. Consider a PID control loop: Should it be tuned for faster disturbance rejection

  • September 15, 2015
  • cyrus@timberbrookfamily.com

How Can I Correct for Noise Using Internal Filters?

Noise is inevitable. To one degree or another it’s evident in the data of most every production process. Sure it can be absent in academic settings and similar lab environments

  • May 29, 2015
  • Control Guru

Model-Based Tuning Methods For PID Controllers

The manner in which a measured process variable responds over time to changes in the controller output signal is fundamental to the design and tuning of a PID controller.