International Business Machines Corporation

Lenovo (singapore) Pte. Ltd.

Edward Y C Kung

Kelvin W P Huang

Charlie C C Chiu

Bruce Alan Smith

Tzongli Lin

Ameha Aklilu

Bill K P Lam

Morgan Y L Wu

Ku-Jei King

Marcus A Kelly

Bryan M H Pan

Chris S C Chang

Ian Y Y Lin

Disclosed is a method for identifying a fan type of a fan in an electronic system having a controller. The method includes: setting a fan identification characteristic value, the fan identification characteristic value corresponding to a PWM (pulse width modulation) duty cycle with a substantial maximum difference between the fan speed of a first type of fan and the fan speed a second type of fan; receiving, via the fan, the fan identification characteristic value; initiating the fan with the fan identification characteristic value; reading, via the controller, a stable fan speed value of the fan; identifying, via the controller, the fan type of the fan based on which fan has a predetermined fan speed (RPM) that is the closest to the stable fan speed value (RPM) when operating at the fan identification characteristic value (PWM).

Method, identification system, and electronic system for identifying a fan type of a fan

A multi-pressure-quantity fan control system for a computer system is provided. The multi-pressure-quantity fan control system includes a controller. The controller provides a pressure-quantity control signal to a fan of the computer system, in order to set the fan to operate in one of a first pressure-quantity setting and a second pressure-quantity setting, wherein under a predetermined rotating speed, the fan has a first pressure-quantity curve for the first pressure-quantity setting and a second pressure-quantity curve for the second pressure-quantity setting.

Multi-pressure-quantity fan control system and computer system having the same

A fan control system for a computer system is provided. The fan control system includes a power sensor and a controller. The power sensor detects the power dissipated by a target device in the computer system. The controller calculates a suggested airflow speed required for the target device and thus outputs a control signal for controlling a fan within the computer system according to at least the dissipated power.

Fan control system and method for a computer system

A flow control device and a related cooled electronic system are provided. The electronic system comprises a first heat dissipation component and a second heat dissipation component. The flow control device controls an amount of an air flow to the first heat dissipation component and the second heat dissipation component. In one illustrative embodiment, the flow control device comprises: a memory metal component coupled to the first heat dissipation component and the second heat dissipation component and a movable component comprising a first end and a second end. The first end is coupled to a point between two ends of the memory metal component and the second end is movable with respect to the first end. In response to a temperature difference between the first heat dissipation component and the second heat dissipation component, the second end approaches the first heat dissipation component or the second heat dissipation component.

Flow control device and cooled electronic system employing the same

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Xindian, Taiwan

Edward Y C Kung