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机械故障模拟器(MFS)数据集,感应电机故障数据库

机械故障模拟器(MFS)数据集,感应电机故障数据库

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Industry,Electricity Classification

1.1.Introduction该数据库由SpectraQuest的机械故障模拟器(MFS)校准平衡振动(ABVT)上的传感器采集的1951个多变量时间序列组......

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    README.md

    1.1.Introduction

    该数据库由SpectraQuest的机械故障模拟器(MFS)校准平衡振动(ABVT)上的传感器采集的1951个多变量时间序列组成。1951包括六种不同的模拟状态:正常功能、不平衡故障、水平和垂直错位故障以及内外轴承故障。本节介绍数据库。

    1.2.Experimental Bench Specifications

    The used SpectraQuest Inc. Alignment/Balance Vibration Trainer (ABVT) Machinery Fault Simulator (MFS).

    SpecificationValueUnit
    Motor1/4CV DC
    Frequency range700-3600rpm
    System weight22kg
    Axis diameter16mm
    Axis length520mm
    Rotor15.24cm
    Bearings distance390mm
    SpecificationValueUnit
    Number of balls8
    Balls diameter0.7145cm
    Cage diameter2.8519cm
    FTF0.3750CPM/rpm
    BPFO2.9980CPM/rpm
    BPFI5.0020CPM/rpm
    BSF1.8710CPM/rpm

    1.3.Data Acquisition System

    • Three Industrial IMI Sensors, Model 601A01 accelerometers on the  radial, axial and tangencial directions:


      • Sensibility
             (±20%) 100 mV per g (10.2 mV per m/s2);

      • Frequency range
             (±3 dB) 16-600000 CPM (0.27-10.000 Hz);

      • Measurement range
             ±50 g (±490 m/s2).

    • One IMI Sensors triaxial accelerometer, Model 604B31, returning data  over the radial, axial and tangencial directions:


      • Sensibility
             (±20%) 100 mV per g (10.2 mV per m/s2);

      • Frequency range
             (±3 dB) 30-300000 CPM (0.5-5.000 Hz);

      • Measurement range
             ±50 g (±490 m/s2)

    • Monarch Instrument MT-190 analog tachometer

    • Shure SM81 microphone with frequency range of 20-20.000 Hz

    • Two National Instruments NI 9234 4 channel analog acquisition    modules, with sample rate of 51.2 kHz

    1.4.Sequences

    Each sequence was generated at a 50 kHz sampling rate during 5 s, totaling 250.000 samples. Below its a summary of each type of sequence:

    SequenceMeasurements
    Normal49
    Horizontal misalignment197
    Vertical misalignment301
    Imbalance333
    Underhang bearing
    Cage fault188
    Outer race184
    Ball fault186
    Overhang bearing
    Cage fault188
    Outer race188
    Ball fault137
    Total1951

    1.4.1. Normal Sequences

    There are 49 sequences without any fault, each with a fixed rotation speed within the range from 737 rpm to 3686 rpm with steps of approximately 60 rpm.

    1.4.2. Imbalance Faults

    Simulated with load values within the range from 6 g to 35 g. For each load value below 30 g, the rotation frequency assumed in the same 49 values employed in the normal operation case. For loads equal to or above 30 g, however, the resulting vibration makes impracticable for the system to achieve rotation frequencies above 3300 rpm, limiting the number of distinct rotation frequencies. The table below presents the number of sequences per weight.

    Weight (g)Measurements
    649
    1048
    1548
    2049
    2547
    3047
    3545
    Total333

    1.4.3. Horizontal Parallel Misalignment

    This type of fault was induced into the MFS by shifting the motor shaft horizontally of 0.5 mm, 1.0 mm, 1.5 mm, and 2.0 mm. Using the same range for the rotation frequency as in the normal operation for each horizontal shift, the table below presents the number of sequences per degree of misalignment.

    Misalignment (mm)Measurements
    0.5050
    1.0049
    1.5049
    2.0049
    Total197

    1.4.4. Vertical Parallel Misalignment

    This type of fault was induced into the MFS by shifting the motor shaft horizontally of 0.51 mm, 0.63 mm, 1.27 mm, 1.40 mm, 17.8 mm and 1.90 mm. Using the same range for the rotation frequency as in the normal operation for each vertical shift, the table below presents the number of sequences per degree of misalignment.

    Misalignment (mm)Measurements
    0.5151
    0.6350
    1.2750
    1.4050
    1.7850
    1.9050
    Total301

    1.4.5. Bearing Faults

    As one of the most complex elements of the machine, the rolling bearings are the most susceptible elements to fault occurrence. The ABVT manufacturer provided three defective bearing, each one with a distinct defective element (outer track, rolling elements, and inner track), that were placed one at a time in two different positions in the MFS experimental stand: between the rotor and the motor (underhang position), or in the external position, having the rotor between the bearing and the motor (overhang position). Bearing faults are practically imperceptible when there is no imbalance. So, three masses of 6 g, 20 g, and 35 g were added to induce a detectable effect, with different rotation frequencies as before.

    Underhang

    The table below presents the underhang cases with outer track faults.

    Weight (g)Measurements
    049
    648
    2049
    3542
    Total188

    The table below presents the underhang cases with rolling elements faults.

    Weight (g)Measurements
    049
    649
    2049
    3537
    Total184

    The table below presents the underhang cases with inner track faults.

    Weight (g)Measurements
    050
    649
    2049
    3538
    Total186

    The underhang has a total of 558 sequences.

    Overhang

    The table below presents the overhang cases with outer track faults.

    Weight (g)Measurements
    049
    649
    2049
    3541
    Total188

    The table below presents the overhang cases with rolling elements faults.

    Weight (g)Measurements
    049
    649
    2049
    3541
    Total188

    The table below presents the overhang cases with inner track faults.

    Weight (g)Measurements
    049
    643
    2025
    3520
    Total137

    The overhang sequences totaling 513.

    2. Machinery Fault Database

    DescriptionSize (GB)
    All Data13.0
    Normal (No fault)0.3
    Horizontal Misalignment1.4
    Vertical Misalignment2.1
    Imbalance2.3
    Underhang Bearing3.7
    Overhang Bearing3.4


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