Electronic device

Details Electronic device Electronic device

2009-05-27

2011-11-08

Patel, Ramesh (Department: 2121)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Specific application of temperature responsive control system

C700S299000, C123S041100, C123S339180, C236S036000, C236S037000

Reexamination Certificate

active

08055392

ABSTRACT:
An electronic device includes a deviation value calculation unit which calculates a deviation value from the normal boundary of the relationship between a power index associated with the driving power and the measured rotational speed of the fan, a clogging detection unit which detects, based on the deviation value, clogging in an air duct through which the fan takes in air outside the case and sends it to the radiator, and a deviation value correction unit which corrects the deviation value in accordance with aging of performance of the fan to compensate for deterioration of the clogging detection capability of the clogging detection unit caused by the aging.

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U.S. Appl. No. 12/402,702, filed Mar. 12, 2009, Sakaguchi, et al.

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