JP2009003665A - Fan control method - Google Patents

Fan control method Download PDF

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Publication number
JP2009003665A
JP2009003665A JP2007163299A JP2007163299A JP2009003665A JP 2009003665 A JP2009003665 A JP 2009003665A JP 2007163299 A JP2007163299 A JP 2007163299A JP 2007163299 A JP2007163299 A JP 2007163299A JP 2009003665 A JP2009003665 A JP 2009003665A
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Japan
Prior art keywords
fan
vibration
increased
cpu
pulse
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Pending
Application number
JP2007163299A
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Japanese (ja)
Inventor
Takuma Nakamura
琢磨 中村
Yoshiteru Suriki
善輝 摺木
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Hitachi Ltd
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Hitachi Ltd
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Priority to JP2007163299A priority Critical patent/JP2009003665A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a FAN control method which solve the following problems: the performance of a CPU or the like is increased, so that heat generation of the CPU or the like is increased resulting in an increase in speed of rotation of a FAN for cooling the CPU or the like, and vibration generated from the FAN is also increased in accordance with the increase in the speed of rotation of the FAN; the recording density of a recording medium such as a hard disk is remarkably increased to narrow the distance between tracks, so that data write and read errors due to off-track or the like caused by vibration may be caused, and which reduces vibration generated from the FAN and prevents write and read errors caused by the vibration of the hard disk or the like. <P>SOLUTION: The method is provided with a means for detecting the vibration of a device and a means for controlling the rotational angles of the FAN to control the rotational angles of the fans so as to reduce vibration. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、複数のＦＡＮを持つ装置に係り、特に振動が少なくなるようにＦＡＮの回転
角を制御することで、装置内外の振動を低減し、ハードディスクなどの振動によるデータ
の書き込み不正や読み出し不正を防止することのできるＦＡＮ制御方法に関する。 The present invention relates to a device having a plurality of FANs. In particular, by controlling the rotation angle of the FAN so as to reduce vibrations, vibrations inside and outside the device are reduced, and data writing and reading fraud due to vibrations of a hard disk or the like are reduced. It is related with the FAN control method which can prevent.

ＣＰＵ等の高性能化に伴い、ＣＰＵ等の発熱量も増大しており、それを冷却するＦＡＮ
も回転数が増加している。ＦＡＮの回転数が増加するに連れ、ＦＡＮから発生する振動も
増加している。また、近年ハードディスクなどの記録密度も増加が著しく、トラック間の
距離が狭いため、振動によるトラックずれ起因のデータの書き込み不正や読み出し不正が
発生しやすくなっている。 Along with the high performance of CPU, etc., the amount of heat generated by CPU, etc. is also increasing, and FAN that cools it.
The number of revolutions has also increased. As the rotational speed of the FAN increases, the vibration generated from the FAN also increases. In recent years, the recording density of hard disks and the like has increased remarkably, and the distance between tracks is narrow. Therefore, data writing and reading fraud due to track deviation due to vibration are likely to occur.

下記特許文献では、サスペンションの制御を用いた振動制御方式の技術が公開されてい
る。 In the following patent document, a technique of a vibration control method using suspension control is disclosed.

特開平８−２６８０２４号公報Japanese Patent Laid-Open No. 8-268024

ＣＰＵ等の高性能化に伴い、ＣＰＵ等の発熱量も増大しており、それを冷却するＦＡＮ
も回転数が増加している。ＦＡＮの回転数が増加するに連れ、ＦＡＮから発生する振動も
増加している。また、近年ハードディスク等記録媒体の記録密度増加も著しく、トラック
間等の距離が狭いため、振動起因によるトラックずれ等のデータ書き込み不正や読み出し
不正が発生しやすくなっている。 Along with the high performance of CPU, etc., the amount of heat generated by CPU, etc. is also increasing, and FAN that cools it.
The number of revolutions has also increased. As the rotational speed of the FAN increases, the vibration generated from the FAN also increases. In recent years, the recording density of recording media such as hard disks has increased remarkably, and the distance between tracks and the like is narrow, so that data writing fraud and reading fraud due to vibration are likely to occur.

本発明の課題は、ＦＡＮによって発生する振動を低減し、ハードディスク等の振動起因
による書き込み不正や読み出し不正発生を無くすことである。 An object of the present invention is to reduce vibrations caused by FAN and to eliminate writing fraud and read fraud caused by vibrations of a hard disk or the like.

本発明の課題は、装置の振動を検出する手段と、ＦＡＮの回転角を制御する手段を設け
、振動が少なくなるようにＦＡＮの回転角を制御することで解決できる。 The problem of the present invention can be solved by providing means for detecting the vibration of the apparatus and means for controlling the rotation angle of the FAN, and controlling the rotation angle of the FAN so that the vibration is reduced.

ＦＡＮの振動起因による、ハードディスク等の書き込み不正や読み出し不正発生を無く
すことができる。 It is possible to eliminate write fraud and read fraud from the hard disk due to FAN vibration.

以下、図を用いて、本発明を実施するための一形態によるＦＡＮ制御手段について説明
する。 Hereinafter, FAN control means according to an embodiment for carrying out the present invention will be described with reference to the drawings.

図１は本発明の一実施の形態であるシステム構成の一例を示すブロック図である。   FIG. 1 is a block diagram showing an example of a system configuration according to an embodiment of the present invention.

図２は本発明の一実施の形態であるＦＡＮ制御手段の一例を示すブロック図である。
図３は本発明の一実施の形態であるシステムの最小構成の一例を示すブロック図である。 FIG. 2 is a block diagram showing an example of FAN control means according to an embodiment of the present invention.
FIG. 3 is a block diagram showing an example of the minimum configuration of the system according to the embodiment of the present invention.

図４は本発明の一実施の形態であるＦＡＮ制御手段の一例を示す説明図である。   FIG. 4 is an explanatory diagram showing an example of FAN control means according to an embodiment of the present invention.

図５は本発明の一実施の形態であるシステムの一例を示すフロー図である。   FIG. 5 is a flowchart showing an example of a system according to an embodiment of the present invention.

図１は、ＦＡＮ制御手段、ＦＡＮ１、ＦＡＮ２、・・・、ＦＡＮｎ、およびＧセンサか
らなる。ＦＡＮ制御手段よりＦＡＮ１、ＦＡＮ２、・・・、ＦＡＮｎにパルスが送られ、
各ＦＡＮが回転する。各ＦＡＮの回転によって発生した振動の加速度は、Ｇセンサにて計
測され、ＦＡＮ制御手段に送られる。 1 includes FAN control means, FAN1, FAN2,..., FANn, and a G sensor. FAN control means sends pulses to FAN1, FAN2, ..., FANn,
Each FAN rotates. The acceleration of vibration generated by the rotation of each FAN is measured by the G sensor and sent to the FAN control means.

図２は、ＦＡＮ制御手段、マイコン、パルス発生装置１、パルス発生装置２、・・・、
およびパルス発生装置ｎからなる。マイコンからの各パルス発生装置に命令が送られ、各
パルス発生装置より各ＦＡＮにパルスが送られる。また、Ｇセンサより送られた加速度は
、マイコンに送られ、記録される。 FIG. 2 shows a FAN control means, a microcomputer, a pulse generator 1, a pulse generator 2,.
And a pulse generator n. A command is sent from the microcomputer to each pulse generator, and a pulse is sent from each pulse generator to each FAN. The acceleration sent from the G sensor is sent to the microcomputer and recorded.

図３は、ＦＡＮ制御手段、マイコン、パルス発生装置１、パルス発生装置２、ＦＡＮ１
、ＦＡＮ２、およびＧセンサからなる。本構成が、本発明の最小構成となる。 FIG. 3 shows FAN control means, microcomputer, pulse generator 1, pulse generator 2, FAN1
, FAN2, and G sensor. This configuration is the minimum configuration of the present invention.

図４にて、ＦＡＮ制御手段を説明する。   The FAN control means will be described with reference to FIG.

（１）はＦＡＮ制御の流れを示す。マイコンがパルス発生装置に命令を行い、パルスを
出力させる。パルス発生装置が出力したパルスにより、ＦＡＮが回転する。 (1) shows the flow of FAN control. The microcomputer instructs the pulse generator to output a pulse. The FAN is rotated by the pulse output from the pulse generator.

（２）、（３）にてパルス駆動ＦＡＮについて説明する。パルス駆動ＦＡＮは、パルス
の回数によって回転する角度が決まっている。パルスｍ回（ｍは１以上の整数）で1回転
するＦＡＮの場合、パルス1回では、１／ｍ回転となる。 The pulse drive FAN will be described in (2) and (3). The rotation angle of the pulse drive FAN is determined by the number of pulses. In the case of FAN that rotates once by m pulses (m is an integer of 1 or more), 1 rotation is performed by one pulse.

（４）にて、パルス回数を変動させることによって、ＦＡＮの振動の位相を制御する方
法を説明する。ＦＡＮの振動の原因の一つに、軸の偏心や、部品の重量の偏りなどによる
、重心の偏りがある。重心が回転の中心からずれている場合、重心が回転によって周期的
な運動をすることによって、振動が発生する。この場合、振動の周期はＦＡＮの周期に依
存する。ＦＡＮの回転角を制御すれば、ＦＡＮの振動の位相を制御できる。あるＦＡＮに
入力されるパルスをパルスａ、ＦＡＮから発生する振動を、振動ａとする。仮に、パルス
aからパルスを一つ間引いて、これをパルスｂとする。パルスを間引いた時点ｔ1から、次
のパルスが発生する時点ｔ2まで、ＦＡＮの回転は止まる。それにより、パルスｂによっ
て発生する振動ｂも、振動が止まる。したがって、パルスを間引くことによって、振動ｂ
は、振動ａに比べてｔ2−ｔ1分、位相が遅れることになる。パルスを間引く個数を制御す
ることにより、振動の位相を制御することが出来る。 In (4), a method for controlling the phase of FAN vibration by changing the number of pulses will be described. One of the causes of FAN vibration is the deviation of the center of gravity due to the eccentricity of the shaft and the deviation of the weight of the parts. When the center of gravity deviates from the center of rotation, vibration is generated by the center of gravity moving periodically by the rotation. In this case, the period of vibration depends on the period of FAN. If the rotation angle of the FAN is controlled, the vibration phase of the FAN can be controlled. A pulse input to a certain FAN is a pulse a, and a vibration generated from the FAN is a vibration a. Temporarily, pulse
One pulse is subtracted from a and this is defined as pulse b. The rotation of the FAN stops from time t 1 when the pulse is thinned out to time t 2 when the next pulse is generated. Thereby, the vibration b generated by the pulse b also stops. Therefore, by thinning out the pulse, vibration b
Is delayed in phase by t 2 −t 1 compared to the vibration a. By controlling the number of thinned pulses, the phase of vibration can be controlled.

図５にて位相を制御することによって振動を低減する例を示す。位相をずらすことによ
り、合成された振動の振幅を抑えることが出来る。 FIG. 5 shows an example in which vibration is reduced by controlling the phase. By shifting the phase, the amplitude of the synthesized vibration can be suppressed.

本発明の一実施の形態であるシステム構成の一例を示すブロック図。The block diagram which shows an example of the system configuration | structure which is one embodiment of this invention. 本発明の一実施の形態であるＦＡＮ制御手段の一例を示すブロック図。The block diagram which shows an example of the FAN control means which is one embodiment of this invention. 本発明の一実施の形態であるシステムの最小構成の一例を示すブロック図。The block diagram which shows an example of the minimum structure of the system which is one embodiment of this invention. 本発明の一実施の形態であるＦＡＮ制御手段の一例を示す説明図。Explanatory drawing which shows an example of the FAN control means which is one embodiment of this invention. 本発明の一実施の形態であるシステムの一例を示すフロー図。The flowchart which shows an example of the system which is one embodiment of this invention.

符号の説明Explanation of symbols

１０…ＦＡＮ制御手段、１１…ＦＡＮ１、１２…ＦＡＮ２、１３…ＦＡＮ３、１４…Ｇ
センサ、２０…ＦＡＮ制御手段、２０ａ…マイコン、２０ｂ…パルス発生装置１、２０ｃ
…パルス発生装置２、２０ｄ…パルス発生装置ｎ、３０…ＦＡＮ制御装置、３０ａ…マイ
コン、３０ｂ…パルス発生装置１、３０ｃ…パルス発生装置２、３１…ＦＡＮ１、３２…
ＦＡＮ２、３３…Ｇセンサ。 10 ... FAN control means, 11 ... FAN1, 12 ... FAN2, 13 ... FAN3, 14 ... G
Sensor, 20 ... FAN control means, 20a ... Microcomputer, 20b ... Pulse generator 1, 20c
... pulse generator 2, 20d ... pulse generator n, 30 ... FAN controller, 30a ... microcomputer, 30b ... pulse generator 1, 30c ... pulse generator 2, 31 ... FAN1, 32 ...
FAN2, 33 ... G sensor.

Claims (1)

複数のＦＡＮを持つ装置において、装置の振動を検出する手段と、ＦＡＮの回転角を制
御する手段を設け、振動が少なくなるようにＦＡＮの回転角を制御することで、装置内外
の振動を低減できることを特徴とするＦＡＮ制御方法。 In an apparatus having a plurality of FANs, means for detecting the vibration of the apparatus and means for controlling the rotation angle of the FAN are provided, and the vibration inside and outside the apparatus is reduced by controlling the rotation angle of the FAN so as to reduce the vibration. FAN control method characterized by being able to do.
JP2007163299A 2007-06-21 2007-06-21 Fan control method Pending JP2009003665A (en)

Priority Applications (1)

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JP2007163299A JP2009003665A (en) 2007-06-21 2007-06-21 Fan control method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015099625A (en) * 2013-11-19 2015-05-28 富士通株式会社 Storage control device, storage control program, and storage control method
JP2021149465A (en) * 2020-03-18 2021-09-27 大訊科技股▲ふん▼有限公司 Server with vibration sensing function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09250497A (en) * 1996-03-13 1997-09-22 Ricoh Co Ltd Equipment cooling method and cooling device
JPH11282362A (en) * 1998-03-31 1999-10-15 Fujitsu General Ltd Plasma display device
JP2000242340A (en) * 1999-02-19 2000-09-08 Fujitsu General Ltd Pdp device
JP2002005099A (en) * 2000-06-27 2002-01-09 Fujitsu General Ltd Exhaust fan device
JP2006049382A (en) * 2004-07-30 2006-02-16 Toshiba Corp Cooling device and electronic equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09250497A (en) * 1996-03-13 1997-09-22 Ricoh Co Ltd Equipment cooling method and cooling device
JPH11282362A (en) * 1998-03-31 1999-10-15 Fujitsu General Ltd Plasma display device
JP2000242340A (en) * 1999-02-19 2000-09-08 Fujitsu General Ltd Pdp device
JP2002005099A (en) * 2000-06-27 2002-01-09 Fujitsu General Ltd Exhaust fan device
JP2006049382A (en) * 2004-07-30 2006-02-16 Toshiba Corp Cooling device and electronic equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015099625A (en) * 2013-11-19 2015-05-28 富士通株式会社 Storage control device, storage control program, and storage control method
US9384077B2 (en) 2013-11-19 2016-07-05 Fujitsu Limited Storage control apparatus and method for controlling storage apparatus
JP2021149465A (en) * 2020-03-18 2021-09-27 大訊科技股▲ふん▼有限公司 Server with vibration sensing function

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