Abstract
In many diseases of a semi-stationary nature (chronical diseases) the level of the regulated variable of the diseased system either is too high (a hyper-state disease) or too low (a hypo-state disease). In this paper the steady-state behavior of proportional control systems is, hence, analysed with regard to a longterm pathological change of each single variable or parameter. Each pathological change has its own pattern of changes of the system variables, which also depends upon the system class (left- or right-regulating). Both the block diagram and the regulation characteristic, when used together, allow one to easily derive the pathological behaviour of the system in the steady-state.
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References
Verveen, A.A.: Silent endocrine tumors, a steady-state analysis of the effects of changes in cell number for biological feedback systems. Biol. Cybern. 31, 49–54 (1978)
Verveen, A.A.: Left- and right-regulating systems, a steady-state analysis of function and structure of simple feedback systems. Biol. Cybern. 35, 131–136 (1979)
Werner, S.C.: Hyperthyroidism; Introduction. In: The thyroid, 3rd. ed., pp. 491–511. Werner, S.C., Ingbar, S.H. (eds.). New York, Evanston, San Francisco, London: Harper & Row 1971
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Verveen, A.A. Theory of diseases of steady-state proportional control systems. Biol. Cybern. 47, 25–31 (1983). https://doi.org/10.1007/BF00340066
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DOI: https://doi.org/10.1007/BF00340066