凯斯西储大学

一、Apparatus&Procedures（实验与采集装置）

AsshowninFigure1above,theteststandconsistsofa2hpmotor(left),a

torquetransducer/encoder(center),adynamometer(right),andcontrol

electronics(notshown).point

faultswereintroducedtothetestbearingsusingelectro-dischargemachining

withfaultdiametersof7mils,14mils,21mils,28mils,and40mils(1

mil=0.001inches).ringswere

udforthe7,14and21milsdiameterfaults,andNTNequivalentbearings

ndandfanendbearing

specifications,includingbearinggeometryanddefectfrequenciesarelistedin

theBEARINGSPECIFICATIONS.

（如图所示，实验平台包括一个2马力的电机（左侧）（1hp=746W），一个转矩传感器（中

间），一个功率计（右侧）和电子控制设备（没有显示）。被测试轴承支承电机轴。使用电

火花加工技术在轴承上布置了单点故障，故障直径分别为0.007、0.014、0.021、0.028、

0.040英寸（1英寸=2.54厘米）。其中前三种故障直径的轴承使用的是SKF轴承，后两种

故障直径的轴承使用的是与之等效的NTN轴承。

Vibrationdatawascollectedusingaccelerometers,whichwereattachedtothe

rometerswereplacedatthe12o?clock

some

experiments,anaccelerometerwasattachedtothemotorsupportingba

ionsignalswerecollectedusinga16channelDATrecorder,

afilesareinMatlab

(*.mat)ldatawascollectedat12,000samplespercond,and

datawasalsocollectedat48,000samplespercondfordriveendbearing

ndhorpowerdatawerecollectedusingthetorque

transducer/encoderandwererecordedbyhand.

（实验中使用加速度传感器采集振动信号，通过使用磁性底座将传感器安放在电机壳体上。

加速度传感器分别安装在电机壳体的驱动端和风扇端12点钟的位置。在有些实验中，传感

器也被安放在电机支承底盘上。振动信号是通过16通道的DAT记录器采集的，并且后期

在MATLAB环境中处理。数字信号的采样频率为12000S/s，驱动端轴承故障数据同时也

以48000S/s的采样速率采集。

Outerracewayfaultsarestationaryfaults,thereforeplacementofthefault

relativetotheloadzoneofthebearinghasadirectimpactonthevibration

responofthemotor/rtoquantifythiffect,

experimentswereconductedforbothfananddriveendbearingswithouter

racewayfaultslocatedat3o?clock(directlyintheloadzone),at6o?clock

(orthogonaltotheloadzone),andat12o?clock

（外圈的故障是固定不变的，因此故障相对于轴承受载区域的位置对电机/轴承系统的振动

响应由直接的影响。为了对这个影响进行定量研究，实验中分别对驱动和风扇端的轴承外圈

布置3点钟、6点钟、12点钟方向的故障。

二、DownloadADataFile

Datawascollectedfornormalbearings,single-pointdriveendandfanend

scollectedat12,000samples/condandat48,000

samples/endbearingdata

wascollectedat12,000samples/cond.

nanddriveendvibrationdataaswell

files,thefollowingiteminthevariablename

indicates:

DE-driveendaccelerometerdata

FE-fanendaccelerometerdata

BA-baaccelerometerdata

time-timeriesdata

RPM-rpmduringtesting

Download:NormalBalineData

MotorLoad(HP)peed(rpm)NormalBalineData

0179797

1177298

2175099

31730100

Download:12kDriveEndBearingFaultData

*=Datanotavailable

Fault

Diameter

Motor

Load

(HP)

Approx.

Motor

Speed

(rpm)

Inner

RaceBall

OuterRace

PositionRelativetoLoadZone

(LoadZoneCenteredat6:00)

Centered

@6:00

Orthogonal

@3:00

Opposite

@12:00

0.007"30144156

11772158

21756159

31737160

0.014"97

**

198

**

2175

**

3173

**

0.021"34246258

11772219

21758260

31739261

0.028"5

***

06

***

27

***

38

***

Download:48kDriveEndBearingFaultData

*=Datanotavailable

Fault

Diameter

Motor

Load

(HP)

Approx.

Motor

Speed

(rpm)

Inner

RaceBall

OuterRace

PositionRelativetoLoadZone(Load

ZoneCenteredat6:00)

Centered

@6:00

Orthogonal

@3:00

Opposite

@12:00

0.007"35148161

11772112

21750163

31731164

0.014"01

**

202

**

2175

**

3173

**

0.021"38250262

239251263

21752264

31733265

Download:12kFanEndBearingFaultData

*=Datanotavailable

Fault

Diameter

Motor

Load

(HP)

Approx.

Motor

Speed

(rpm)

Inner

RaceBall

OuterRace

PositionRelativetoLoadZone

(LoadZoneCenteredat6:00)

Centered

@6:00

Orthogonal

@3:00

Opposite

@12:00

0.007"94298302

295299305

21750306

31731307

0.014"13310

*

*

309

*

21750276288

*

311

*

31730277289

*

312

*

0.021"15

**

*

316

*

21750272292

*

317

*

31730273293

*

318

*

（FaultSpecifications故障规格(Alldimension尺寸ininches)

BearingFaultLocationDiameterDepthBearingManufacturer

DriveEndInnerRaceway.007.011SKF

DriveEndInnerRaceway.014.011SKF

DriveEndInnerRaceway.021.011SKF

DriveEndInnerRaceway.028.050NTN

DriveEndOuterRaceway.007.011SKF

DriveEndOuterRaceway.014.011SKF

DriveEndOuterRaceway.021.011SKF

DriveEndOuterRaceway.040.050NTN

DriveEndBall.007.011SKF

DriveEndBall.014.011SKF

DriveEndBall.021.011SKF

DriveEndBall.028.150NTN

FanEndInnerRaceway.007.011SKF

FanEndInnerRaceway.014.011SKF

FanEndInnerRaceway.021.011SKF

FanEndOuterRaceway.007.011SKF

FanEndOuterRaceway.014.011SKF

FanEndOuterRaceway.021.011SKF

FanEndBall.007.011SKF

FanEndBall.014.011SKF

FanEndBall.021.011SKF

Bearinginformation轴承信息：

Driveendbearing驱动端轴承:6205-2RSJEMSKF,deepgrooveball

bearing深沟球轴承，Z=9。其中：2RS是双面密封，JEM无意义，SKF

（SvenskaKullager-Fabriken）是斯凯孚公司，NTN是日本公司。

Size尺寸:(inches)

Inside

Diameter

Outside

Diameter

Thickness

Ball

Diameter

Pitch节距

Diameter

0.98432.04720.59060.31261.537

Defectfrequencies故障频率:(multipleofrunningspeedinHz转速的倍数)

InnerRing内圈OuterRing外圈CageTrain保持架组

RollingElement

5.41523.58480.398284.7135

Fanendbearing风扇端轴承:6203-2RSJEMSKF,deepgrooveball

bearing深沟球轴承，z=8

Size尺寸:(inches)

InsideDiameterOutsideDiameterThicknessBallDiameterPitchDiameter

0.66931.57480.47240.26561.122

Defectfrequencies:(multipleofrunningspeedinHz)

InnerRingOuterRingCageTrainRollingElement

4.94693.05300.38173.9874