System poles and zeros

3 Root-locus analysis 5.3.1 System poles and zeros 

The closed-loop transfer function for any feedback control system may be written in the factored form given in equation (5.41) 

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Finally, the dynamic measure (6) was computed at the six operating points labelled in Figure 5. These results along with the system poles and zeros can be foimd in Table 5.1. Also included in the table is the time constant (t/o) of the best flrst-order approximation obtained in computing (6). 

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