Exercise 5.11 What information about a plant is important for controller design

or more specically in which frequency range is it important to know the model well

To answer this problem you may think about the following subproblems

a Explain what information about the plant is used for ZieglerNichols tuning of a SISO PIDcontroller

b Is the steadystate plant gain G 

important for controller design

As an example consider the plant G s

 

sa with jaj   and design a Pcontroller K s

 Kc such that c   How does the controller design and the closedloop response depend on the steadystate gain G 

 
a