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.
