Digital representations of analog systems for control system applications

This tutorial shows how digital controllers can be created from an analog (or continuous) model. This is especially useful when a processor is used to control an analog system. Many methods are available to convert between analog and digital systems.  "Tustin's method" and "hold equivalence" work especially well. These particular methods are evaluated to show how they compare with an analog system. Just a modest amount of theory is presented to help with the understanding of the methods described. This application note is somewhat introductory, but the techniques explained can also be applied to more advanced solutions.

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