Fuzzy controller apparatus and method for steady state control
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United States of America Patent
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-
Oct 5, 1993
Grant Date -
N/A
app pub date -
Apr 30, 1991
filing date -
Apr 30, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuzzy controller is disclosed which is furnished with an error generator to generate a first error between a present value and a desired value. A corrector unit calculates the amount of correction needed based on the error and adds the appropriate amount of correction to the desired value. An error generator generates a second error between the present value and the corrected desired value. A fuzzy inference unit performs fuzzy inferences, based on fuzzy rules and membership functions, on inputs which include the second error. The fuzzy controller thus performs fuzzy inferences based on an error existing between the present value and the corrected desired value after the corrected desired value is obtained from the error existing between a present value and a desired value. The fuzzy controller is able to perform feedback control in both transient and steady states of a control system.
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