Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1997-01-21
1998-08-18
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219501, 219506, 374102, 395900, 36447701, H05B 102
Patent
active
057960771
ABSTRACT:
An optimum fuzzy method applies a genetic algorithm to a fuzzy function which determines on the amount of rice and resolves switching patterns of a heater in a cooking cycle. The optimum fuzzy method controls a rice cooker by controlling the on/off times of its heater by the use of a fuzzy function in a cooking operation. The method includes: a step wherein experimental data is abstracted, and then is converted into desirable data to fit heating conditions; a fuzzy logic step in which the desirable data is divided into fuzzy areas, a fuzzy function is constructed according to the divided fuzzy areas, and an error value of the fuzzy function is produced after verifying the constructed fuzzy function; a comparison fuzzy function step in which the fuzzy function is applied to a microcomputer if the error value is within the range of the reference values; and a step wherein a genetic algorithm step is applied if said error value is not within the range of the reference values, and then said fuzzy logic step is returned to.
REFERENCES:
patent: 5300757 (1994-04-01), Hara et al.
patent: 5311268 (1994-05-01), Ohzeki et al.
patent: 5386099 (1995-01-01), Has
patent: 5552584 (1996-09-01), Idebro
Paschall Mark H.
Samsung Electronics Co,. Ltd.
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