Refrigeration – Automatic control – Of external fluid or means
Reexamination Certificate
2007-05-22
2007-05-22
Jiang, Chen Wen (Department: 3744)
Refrigeration
Automatic control
Of external fluid or means
C700S290000, C700S278000
Reexamination Certificate
active
10830491
ABSTRACT:
Disclosed herein are methods and systems for controlling fan speed by approximating a nonlinear temperature control function activated within a given temperature control range. The temperature control range is divided into numerous linear segments each of which is associated with a sub-range of temperatures and may approximate a segment of the control function. Control coefficients may be determined for each of the linear segments. The controlled temperature is measured and used for determining a corresponding sub-range, and a linear segment. A control signal may be calculated according to the control coefficients of the segment determined by the measured temperature. The control signal is used for the activation of one or more fans, and is continuously determined for new measured temperatures.
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CALCULUS, Bers and Karal, 1976, Holt, Rinehart and Winston, p. 24-27.
Jiang Chen Wen
Winbond Electronics Corporation
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