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Cybernetics |
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cybernetics [Gr.,=steersman], term coined by American mathematician Norbert Wiener Wiener, Norbert, 1894–1964, American mathematician, educator, and founder of the field of cybernetics, b. Columbia, Mo., grad. Tufts College, 1909, Ph.D. Harvard, 1913. ..... Click the link for more information. to refer to the general analysis of control systems control systems, combinations of components (electrical, mechanical, thermal, or hydraulic) that act together to maintain actual system performance close to a desired set of performance specifications. Open-loop control systems (e.g. ..... Click the link for more information. and communication communication, transfer of information, such as thoughts and messages, as contrasted with transportation, the transfer of goods and persons (see information theory ). The basic forms of communication are by signs (sight) and by sounds (hearing; see language ). ..... Click the link for more information. systems in living organisms and machines. In cybernetics, analogies are drawn between the functioning of the brain and nervous system and the computer computer, device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator , by being able to store a computer program (so that it can repeat its operations and make ..... Click the link for more information. and other electronic systems. The science overlaps the fields of neurophysiology, information theory information theory or communication theory, mathematical theory formulated principally by the American scientist Claude E. Shannon to explain aspects and problems of information and communication. ..... Click the link for more information. , computing machinery, and automation automation, automatic operation and control of machinery or processes by devices, such as robots that can make and execute decisions without human intervention. ..... Click the link for more information. . See servomechanism servomechanism, automatic device for the control of a large power output by means of a small power input or for maintaining correct operating conditions in a mechanism. It is a type of feedback control system. ..... Click the link for more information. . BibliographySee N. Wiener, Cybernetics (rev. ed. 1961) and The Human Use of Human Beings (1967); F. H. Fuchs, The Brain as a Computer (1973). cyberneticsScience of regulation and control in animals (including humans), organizations, and machines when they are viewed as self-governing whole entities consisting of parts and their organization. It was conceived by Norbert Wiener, who coined the term in 1948. Cybernetics views communication and control in all self-contained complex systems as analogous. It differs from the empirical sciences (physics, biology, etc.) in not being interested in material form but in organization, pattern, and communication in entities. Because of the increasing sophistication of computers and the efforts to make them behave in humanlike ways, cybernetics today is closely allied with artificial intelligence and robotics, and it draws heavily on ideas developed in information theory. The comparative study of human and machine processes in order to understand their similarities and differences. It often refers to machines that imitate human behavior. The term was coined by Norbert Wiener (1894-1964), one of the great mathematicians of the 20th century. See AI and robot. Cybernetics The study of communication and control within and between humans, machines, organizations, and society. This is a modern definition of the term cybernetics, which was first utilized by N. Wiener in 1948 to designate a broad subject area he defined as “control and communication in the animal and the machine.” A distinguishing feature of this broad field is the use of feedback information to adapt or steer the entity toward a goal. When this feedback signal is such as to cause changes in the structure or parameters of the system itself, it appears to be self-organizing. See Adaptive control Wiener developed the statistical methods of autocorrelation, prediction, and filtering of time-series data to provide a mathematical description of both biological and physical phenomena. The use of filtering to remove unwanted information or noise from the feedback signal mimics the selectivity shown in biological systems in which imprecise information from a diversity of sensors can be accommodated so that the goal can still be reached.
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