Plant Templates
Usually any system can be represented by its Transform Function (Laplace in continuous time domain), after getting the model of a system.
As a result of experimental measurement, values of coefficients in the Transform Function have a range of uncertainty. Therefore, in QFT every parameter of this function is included into an interval of possible values, and the system may be represented by a family of plants rather than by a standalone expression.
A frequency analysis is performed for a finite number of representative frequencies and a set of templates are obtained in the NC diagram which encloses the behaviour of the open loop system at each frequency.
Read more about this topic: Quantitative Feedback Theory
Famous quotes containing the word plant:
“I wish that friendship should have feet, as well as eyes and eloquence. It must plant itself on the ground, before it vaults over the moon. I wish it to be a little of a citizen, before it is quite a cherub.”
—Ralph Waldo Emerson (1803–1882)