K for marginal stability. Using the Jury test, the values of K as the loeus erosses the unit eirele are given in equations (7.75) and (7.73) [Pg.219]

The seript file examp75.m simulates the Jury stability test undertaken in Example 7.5. With the eontroller gain K in Example 7.5 (Figure 7.14) set to 9.58 for marginal stability see equation (7.75), the roots of the denominator of the elosed-loop pulse transfer funetion are ealeulated, and found to lie on the unit eirele in the z-plane. [Pg.398]

Unit circle crossover This can be obtained by determining the value of K for marginal stability using the Jury test, and substituting it in the characteristic equation (7.76). [Pg.218]

In the same way that the Routh-Hurwitz criterion offers a simple method of determining the stability of continuous systems, the Jury (1958) stability test is employed in a similar manner to assess the stability of discrete systems. [Pg.215]

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