BCSSS

International Encyclopedia of Systems and Cybernetics

2nd Edition, as published by Charles François 2004 Presented by the Bertalanffy Center for the Study of Systems Science Vienna for public access.

About

The International Encyclopedia of Systems and Cybernetics was first edited and published by the system scientist Charles François in 1997. The online version that is provided here was based on the 2nd edition in 2004. It was uploaded and gifted to the center by ASC president Michael Lissack in 2019; the BCSSS purchased the rights for the re-publication of this volume in 200?. In 2018, the original editor expressed his wish to pass on the stewardship over the maintenance and further development of the encyclopedia to the Bertalanffy Center. In the future, the BCSSS seeks to further develop the encyclopedia by open collaboration within the systems sciences. Until the center has found and been able to implement an adequate technical solution for this, the static website is made accessible for the benefit of public scholarship and education.

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

STABILITY MARGIN 1)2)

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The values comprised between the uppermost and lowest fluctuations thresholds of some parameter critical for the survival of a system.

ROSENBROCK and Mc MORRAN, quoted by B. PORTER state, for instance: "… an essential requirement for most industrial control systems will be that changes of loop gains, between zero and the design values and in all combinations, should leave the system with an adequate stability margin" (1976, p.227).

As observed by these authors "… optimality does not insure this" (Ibid). (Optimality being understood, as it too frequently is the case, as maximality: productive optimality is not the same as systemic optimality).

Furthermore, a well managed system should ideally remain well within the limits of its stability margin, and avoid nearing to closely its thresholds of stability, in order to avoid too high regulation costs and sometimes very high risks.

Categories

  • 1) General information
  • 2) Methodology or model
  • 3) Epistemology, ontology and semantics
  • 4) Human sciences
  • 5) Discipline oriented

Publisher

Bertalanffy Center for the Study of Systems Science(2020).

To cite this page, please use the following information:

Bertalanffy Center for the Study of Systems Science (2020). Title of the entry. In Charles François (Ed.), International Encyclopedia of Systems and Cybernetics (2). Retrieved from www.systemspedia.org/[full/url]

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