Download PDF by László Kevickzy, Cs. Banyasz: Two-Degree-of-Freedom Control Systems: The Youla

By László Kevickzy, Cs. Banyasz

ISBN-10: 012803310X

ISBN-13: 9780128033104

This publication covers an important concerns from classical and strong keep watch over, deterministic and stochastic keep an eye on, process identity, and adaptive and iterative regulate options. It covers lots of the recognized regulate process methodologies utilizing a brand new base, the Youla parameterization (YP). this idea is brought and prolonged for TDOF regulate loops. The Keviczky-Banyasz parameterization (KP) approach built for closed loop platforms can also be awarded. The publication is effective if you are looking to see during the jungle of accessible equipment by utilizing a unified method, and should you are looking to organize machine code with a given algorithm.

  • Provides entire insurance of the main common keep watch over process methodologies
  • The first ebook to take advantage of the Youla parameterization (YP) as a standard base for comparability and set of rules development
  • Compares YP and Keviczky-Banyasz (KB) parameterization that can assist you write your personal machine algorithms

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Extra resources for Two-Degree-of-Freedom Control Systems: The Youla Parameterization Approach

Example text

Thus for a process containing actual time delay it is reasonable to use the pulse transfer function À Á g1 þ g2 zÀ1 þ . þ gn zÀðnÀ1Þ Àðdþ1Þ G zÀ1 ¼ z 1 þ f1 zÀ1 þ f2 zÀ2 þ . 32) The function GðzÞ or the equivalent pulse transfer function GðzÀ1 Þ can be obtained by step response equivalent (SRE) transformation from the transfer function P(s) of a CT process, if a zero-order holding is applied in the DT system. 45). Note that the SRE transformation always gives pole excess pT ¼ 1 for GðzÞ in DT case for any arbitrary pole excess of P(s) in CT case.

Stable. If k0 ¼ 1, the system is on the stability limit. If k0 > 1, the system is unstable. 12) The meaning of k is more expressive than that of k0 ; however, the reciprocal of k0 specifies the factor by which the system multiplies the actual loop gain to reach the stability limit. Therefore it is straightforward to use the measure gt ¼ 1=k0 ¼ 1=jLð ju180 Þj as the relative gain margin. Multiplying the loop gain by gt , the value of the critical gain is obtained. The inequalities gt ! Mm/(Mm À 1) and 4t !

Concerning the order of the polynomials AðsÞ and BðsÞ it should be noted that the number of the state variables is n, m is the order of the polynomial BðsÞ, and the relation m n exists. The difference between the order of the numerator and denominator pT ¼ n À m is called pole access. If pT > 0, then P(s) is strictly proper, if pT ¼ 0, then the transfer function is proper. In the practice arbitrary relation 0 pT n might occur. 13), that is, the order of the adjunct is always lower than that of the determinant).

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Two-Degree-of-Freedom Control Systems: The Youla Parameterization Approach by László Kevickzy, Cs. Banyasz


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