PID controllers consist of Proportional, Integral, andDerivative blocks that manipulate the error of the Process Variablesignal depending on their own characteristics. Some controllers usethese three blocks while some other controllers use the P block orthe P block in conjunction with another one. In any case, the Pblock seems to be always present.
Discuss if we can have controllers that employ only an I blockor a D block alone.
Describe why or why not using these blocks alone is possible andthe possible consequences of this type of use.
