Abstract
So far we have only considered systems that have an input and an output. If you consider physiological systems where an input is delivered (from say the nerves) to act upon a system (say the muscles), then such a simple scheme where an output is generated as a response to the input is quite inadequate. If the input (from the nerves in this case) is delivered with no knowledge about the final outcome, the entire system may behave in quite an undesirable fashion. Such a situation is greatly improved if the input is able to correct itself using some information about the system’s actual output. Such systems are called feedback systems. The neuromuscular reflex is a good example of such feedback systems in physiology.
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References
C.H. Houpis and G.B. Lamont, Digital control systems. McGraw Hill, 1985.
C.L. Phillips and R.D. Harbor, Feedback control systems. Prentice Hall, 1988.
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© 2000 Springer Science+Business Media New York
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Devasahayam, S.R. (2000). Feedback Systems. In: Signals and Systems in Biomedical Engineering. Topics in Biomedical Engineering International Book Series. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4299-5_8
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DOI: https://doi.org/10.1007/978-1-4615-4299-5_8
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