Document Outline

• LabVIEW Order Analysis Toolset User Manual
• Support
  • Worldwide Technical Support and Product Information
  • National Instruments Corporate Headquarters
  • Worldwide Offices
• Important Information
  • Warranty
  • Copyright
  • Trademarks
  • Patents
  • WARNING REGARDING USE OF NATIONAL INSTRUMENTS PRODUCTS
• Contents
• About This Manual
  • How to Use This Manual
  • Conventions
  • Related Documentation
• Chapter 1 Introduction to the LabVIEW Order Analysis Toolset
  • Overview of the LabVIEW Order Analysis Toolset
  • Overview of the LabVIEW Order Analysis Start-Up Kit
  • Important Considerations for the Analysis of Rotating Machinery
  • System Requirements
  • Installation
  • Example VIs
    • Acquiring Data for Example VIs
    • Configuring DAQ Hardware Used with Examples
      • Acquire Data (Analog Tach) VI
      • Figure 1-1. Acquire Data (Analog Tach) VI Configuration Tab
      • Figure 1-2. Acquire Data (Analog Tach) VI Acquisition Tab
      • Acquire Data with PXI 4472 and TIO VI
      • Figure 1-3. Acquire Data with PXI 4472 and TIO VI Configuration Tab
      • Figure 1-4. Acquire Data with PXI 4472 and TIO VI Acquisition Tab
• Chapter 2 Order Analysis
  • Order Analysis Definition and Application
  • Order Analysis Basics
    • Figure 2-1. Order and Frequency Domain Display of a Shaft Rotating at 3,000 rpm
    • Figure 2-2. Order Spectrum of a PC Fan with Seven Blades and Four Coils
  • Effect of Rotational Speed on Order Identification
    • Constant Rotational Speed
      • Figure 2-3. PC Fan Running at Constant Speed
    • Variable Rotational Speed
      • Figure 2-4. Constant Frequency
      • Figure 2-5. Frequency Changes Over Time
      • Figure 2-6. Fan Run-Up
    • Harmonic Analysis
    • Order Analysis
  • Order Analysis Methods
    • Gabor Transform
      • Figure 2-7. Padding Schemes
      • Figure 2-8. Padding Examples
    • Resampling
      • Figure 2-9. Resampling
      • Figure 2-10. Spectrum of Angle Samples
    • Adaptive Filter
• Chapter 3 Gabor Transform-Based Order Tracking
  • Overview of Gabor Order Analysis
    • Figure 3-1. Frequency-Time Spectral Map of a Vibration Signal
    • Figure 3-2. Gabor Order Analysis Diagram
  • Extracting the Order Components
    • Figure 3-3. Constant Frequency Bandwidth and Constant Order Bandwidth
  • Masking
    • Extracting Orders
      • Figure 3-4. Gabor Coefficients
    • Reconstructing the Signal
      • Figure 3-5. Original Signal and Extracted Order Component
      • Figure 3-6. Spectrum of Reconstructed Signal
  • Displaying Spectral Maps
    • Figure 3-7. 2D Spectral Maps
  • Calculating Waveform Magnitude
• Chapter 4 Resampling-Based Order Analysis
  • LabVIEW Order Analysis Toolset Resampling Method
    • Figure 4-1. Resampling-Based Order Analysis Diagram
  • Determining the Time Instance for Resampling
    • Figure 4-2. Original Time Sequence and CIC Interpolation Filter with an Interpolation Factor of Eight
  • Resampling Vibration Data
    • Figure 4-3. hs(t) with fs = 1
  • Slow Roll Compensation
    • Figure 4-4. Slow Roll Compensation
• Chapter 5 Calculating Rotational Speed
  • Digital Differentiator Method
    • Figure 5-1. Tachometer Signal and Rotation Angle
  • Averaging Pulses
    • Figure 5-2. Cumulative Revolution and Rotational Speed
• Appendix A Gabor Expansion and Gabor Transform
  • Gabor Expansion and Gabor Transform Basics
  • Discrete Gabor-Expansion-Based Time-Varying Filter
• Appendix B References
• Appendix C Technical Support and Professional Services
• Glossary
  • Numbers/Symbols
  • A-D
  • F-O
  • R-W
• Index
  • A-I
  • K-W