National-instruments Order Analysis Toolset Manuel d'utilisateur Page 4
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© National Instruments Corporation v LabVIEW Order Analysis Toolset User Manual
Contents
About This Manual
How to Use This Manual ...............................................................................................vii
Conventions ...................................................................................................................vii
Related Documentation..................................................................................................viii
Chapter 1
Introduction to the LabVIEW Order Analysis Toolset
Overview of the LabVIEW Order Analysis Toolset......................................................1-1
Overview of the LabVIEW Order Analysis Start-Up Kit..............................................1-1
Important Considerations for the Analysis of Rotating Machinery...............................1-2
System Requirements ....................................................................................................1-3
Installation .....................................................................................................................1-3
Example VIs ..................................................................................................................1-4
Acquiring Data for Example VIs.....................................................................1-4
Configuring DAQ Hardware Used with Examples .........................................1-4
Acquire Data (Analog Tach) VI........................................................1-5
Acquire Data with PXI 4472 and TIO VI .........................................1-6
Chapter 2
Order Analysis
Order Analysis Definition and Application ...................................................................2-1
Order Analysis Basics....................................................................................................2-1
Effect of Rotational Speed on Order Identification .......................................................2-4
Constant Rotational Speed ..............................................................................2-4
Variable Rotational Speed...............................................................................2-6
Harmonic Analysis ..........................................................................................2-9
Order Analysis.................................................................................................2-9
Order Analysis Methods ................................................................................................2-9
Gabor Transform .............................................................................................2-10
Resampling ......................................................................................................2-13
Adaptive Filter.................................................................................................2-15
- Order Analysis Toolset 1
- User Manual 1
- Important Information 3
- Contents 4
- About This Manual 6
- Related Documentation 7
- Introduction to the 8
- Machinery 9
- System Requirements 10
- Installation 10
- Example VIs 11
- Acquire Data (Analog Tach) VI 12
- Order Analysis 16
- Chapter 2 Order Analysis 17
- 12.0 14.0 16.0 18
- 4 Coils 7 Blades 18
- 0.0 2.0 4.0 6.0 8.0 10.0 18
- Constant Rotational Speed 19
- Variable Rotational Speed 21
- Figure 2-6. Fan Run-Up 23
- Order Analysis Methods 24
- Gabor Transform 25
- Figure 2-7. Padding Schemes 26
- Figure 2-8. Padding Examples 27
- Resampling 28
- Adaptive Filter 30
- Gabor Transform-Based Order 31
- Tracking 31
- Extracting Orders 36
- Reconstructing the Signal 37
- Displaying Spectral Maps 38
- Figure 3-7. 2D Spectral Maps 39
- Resampling-Based Order 41
- Analysis 41
- Resampling Vibration Data 44
- Slow Roll Compensation 45
- Calculating Rotational Speed 47
- Averaging Pulses 49
- Gabor Expansion and 51
- References 57
- Technical Support and 58
- Professional Services 58
- Glossary 59
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