Browsing by Subject "digital control systems"

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Access status: Open Access ,
Dobór okresu próbkowania dla obiektów liniowych I i II rzędu z jednym zerem transmitancji
(Wydawnictwa AGH, 2010) Oprzędkiewicz, Krzysztof
In a paper a problem of sample time assign for lst order and 2nd order plants with one zero in transfer function is presented. In systems we deal with, during discretisation the zero of the transfer function can move outside the unit circle. In the paper the analytical conditions for keeping the zero inside the unit circle were formulated. For 2nd order aperiodical plant it was proven, that the zero of the transfer function is kept inside the unit circle for each positive value of the sample time. For lst order plant and 2nd order oscillatory plant without damping exact analytical conditions for keeping the zero inside unit circle were given. For a 2nd order oscillatory plant with damping analytical conditions are also given, but in the more complicated form. Theoretical results are by numerical examples depicted.