US 9,958,916 B2Granted

Temperature management system

AssigneeFujitsu Limited

InventorsMasatoshi Ogawa, Hiroshi Endo, Hiroyuki Fukuda, Masao Kondo

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Abstract

A temperature management system includes: a first temperature detection unit configured to detect a temperature of a heat generation component in an electronic device; a cooling apparatus configured to circulate air in the electronic device and to cool the heat generation component; a second temperature detection unit configured to detect a temperature of air flowing in the electronic device; a parameter setting unit configured to set a target value of the temperature of the heat generation component; and a control unit. The control unit calculates a predicted value of a future temperature of the heat generation component based on the outputs of the first temperature detection unit and the second temperature detection unit, and the power consumption of the electronic device, and determines a manipulated variable of the cooling apparatus based on the predicted value and the target value.

Claims10

Dependent claims

A temperature management system comprising:

a first temperature sensor configured to detect a temperature of a heat generation component in an electronic device;
a cooling apparatus that includes a fan, the fan being configured to circulate air in the electronic device and to cool the heat generation component;
a second temperature sensor configured to detect a temperature of air flowing in the electronic device;
a parameter setting unit that includes a memory, the memory being configured to set a target value of the temperature of the heat generation component;
and
a control unit including a processor that is coupled to the memory, the processor being configured to:
determine a highest temperature of the heat generation component as a high level temperature from an output of the first temperature detection unit—
employ a disturbance model to express a power consumption of the electronic device as unobservable disturbance based on a change in the high level temperature;
calculate a predicted value of a future temperature of the heat generation component based on outputs of the first temperature detection unit and the second temperature detection unit, and the power consumption of the electronic device;
employ a cost function to calculate a cost by assigning a weight to a deviation between the predicted value and the target value;
calculate a manipulated variable that satisfies a preset constraint condition and minimizes the cost within a predetermined period from present to future;
employ a prediction model to calculate the predicted value of the future temperature of the heat generation component based on the temperature of the air flowing in the electronic device, the manipulated variable, and the power consumption of the electronic device;
estimate an operational state of the electronic device using the disturbance model and the prediction model;
correct the predicted value using the estimated operational state and a difference between a past high level temperature and a past predicted value;
and
determine a manipulated variable of the cooling apparatus based on the predicted value corrected and the target value, wherein
an operation of the cooling apparatus is controlled based on the manipulated variable.

14 more elements

A temperature management system comprising:

a first temperature sensor configured to detect a temperature of a heat generation component in an electronic device;
a cooling apparatus that includes a fan, the fan being configured to circulate air in the electronic device and to cool the heat generation component;
a second temperature sensor configured to detect a temperature of air flowing in the electronic device;
a memory;
and
a processor coupled to the memory, the processor being configured to:
set, in the memory, a target value of the temperature of the heat generation component;
determine a highest temperature of the heat generation component as a high level temperature from an output of the first temperature detection unit;
employ a disturbance model to express a power consumption of the electronic device as unobservable disturbance based on a change in the high level temperature;
calculate a predicted value of a future temperature of the heat generation component based on outputs of the first temperature detection unit and the second temperature detection unit, and the power consumption of the electronic device;
employ a cost function to calculate a cost by assigning a weight to a deviation between the predicted value and the target value;
calculate a manipulated variable that satisfies a preset constraint condition and minimizes the cost within a predetermined period from present to future;
employ a prediction model to calculate the predicted value of the future temperature of the heat generation component based on the temperature of the air flowing in the electronic device, the manipulated variable, and the power consumption of the electronic device;
estimate an operational state of the electronic device using the disturbance model and the prediction model;
correct the predicted value using the estimated operational state and a difference between a past high level temperature and a past predicted value;
and
determine a manipulated variable of the cooling apparatus based on the predicted value corrected and the target value, wherein
an operation of the cooling apparatus is controlled based on the manipulated variable.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/849,953Filed 10 Sep 2015 · continuation
Priority: 18 Mar 2013
Published: US 2015/0378404 A131 Dec 2015
Granted: 1 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

G06F 1/206
Cooling means: comprising thermal management
G05B 15/02
Systems controlled by a computer: electric
G05D 23/1931
Sensing the temperaure in different places in thermal relationship with one or more spaces: to control the temperature of one space
G06F 1/325
Power saving characterised by the action undertaken: power saving in peripheral device