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Orifice Calibration

R. Russell Rhinehart
15 min
Intermediate
Article / Blog
Application

The ISO method for orifice design and calibration is grounded in the ideal square-root relation between pressure drop and flow rate, specifies the in-pipe structure for an orifice, and...

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First-Order Filters

R. Russell Rhinehart
Beginner
Article / Blog
Application

Use data filters to temper noise - relation of options to lag and variance reduction

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Robotic Car - A Simple Way to Build a Model

Brian Douglas
15 min
Beginner
Video
Theory

You don't always have to work out the math in order to build up a model of your system. Sometimes generating a model is as easy as running a simple test and inspecting the results. I show...

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What are Nonlinear ARX Models?

Mathworks
Intermediate
Article / Blog
Theory

This Mathworks page provides an overview of Nonlinear ARX Models.Nonlinear ARX models extend the linear ARX models to the nonlinear case. The structure of these models enables you to model...

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Controlling Robotic Swarms

Brian Douglas
13 min
Beginner
Video
Theory

Come with me to the Robotics, Aerospace, and Information Networks lab at the University of Washington to learn the basics of swarm robotics. Find out how simple distributed algorithms can...

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Toys for Control Education

Ichiro Maruta
Intermediate
App
Theory

Teaching materials for control engineering education that run in web browsers. Speed control, position control, step response of 2nd order system, pole and impulse response, and rocket.

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Interpreting Lines on PFDs and P&IDs

R. Russell Rhinehart
20 min
Intermediate
Article / Blog
Application

Lines on a process flow diagram (PFD) indicate material flow.  In contrast, on a piping and instrument diagram (P&ID), the control overlay for the PFD, the lines represent information flow. ...

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Feedforward Control

Doug Cooper & Allen Houtz
Intermediate
Article / Blog
Application

When a Ratio Control strategy takes action too soon, use Feedforward to temper the dynamics.  When a disturbance can be measured, but would not be a ratio of the control output use...

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What is Residual Analysis?

Mathworks
Intermediate
Article / Blog
Theory

Residuals are differences between the one-step-predicted output from the model and the measured output from the validation data set. Thus, residuals represent the portion of the validation...

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