Digital compensator design using pole placement

2 Digital compensator design using pole placement 

Converting from polar to cartesian co-ordinates gives the closed-loop poles in the z-plane 

The control problem is to design a compensator D z), which, when cascaded with G z), provides a characteristic equation 

Select the value of a so that the non-unity pole in G(z) is cancelled 

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Example 7.8 Digital Compensator Design using Pole Placement... 

Here pole placement is used to design a digital compensator that produces exactly the step response of the continuous system. 

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