Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· An operator is a special part of an equation - one example is the (d/dt) of calculus.
· The basic definition of the backshift operator `B' is,
· If we apply this operator to an equation seen before,
· This form then allow some very useful techniques that we will see later.
· Apply the `B' transform to the PID expression found before,
· Apply the `B' transform to the valve and water tank found before,
