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ME 392 Chapter 5 Spin Balancing February 21, 2012 week 7 part 2

ME 392 Chapter 5 Spin Balancing February 21, 2012 week 7 part 2. Joseph Vignola. Approach to Lab Measurements. In the first lab basic approach I like to use for experiments. Approach to Lab Measurements. In the first lab basic approach I like to use for experiments

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ME 392 Chapter 5 Spin Balancing February 21, 2012 week 7 part 2

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  1. ME 392Chapter 5Spin BalancingFebruary 21, 2012week 7 part 2 Joseph Vignola

  2. Approach to Lab Measurements In the first lab basic approach I like to use for experiments

  3. Approach to Lab Measurements In the first lab basic approach I like to use for experiments All measurements parameters defined as LabVIEW controls and passed into a data file along with the data.

  4. Approach to Lab Measurements In the first lab basic approach I like to use for experiments All measurements parameters defined as LabVIEW controls and passed into a data file along with the data.

  5. Approach to Lab Measurements In the first lab basic approach I like to use for experiments All measurements parameters defined as LabVIEW controls and passed into a data file along with the data.

  6. Approach to Lab Measurements In the first lab basic approach I like to use for experiments All measurements parameters defined as LabVIEW controls and passed into a data file along with the data. Literal file and variable names “smith_lab1_filter.vi” “smith_lab1_filter.m” “smith_lab1_data.mat” “sampling_frequency” “accelerometer_data” “iteration_number”

  7. Approach to Lab Measurements In the first lab basic approach I like to use for experiments All measurements parameters defined as LabVIEW controls and passed into a data file along with the data. Literal file and variable names Fully automated Matlab script for processing, plotting and saving results in final form

  8. Approach to Lab Measurements In the first lab basic approach I like to use for experiments All measurements parameters defined as LabVIEW controls and passed into a data file along with the data. Literal file and variable names Fully automated Matlab script for processing, plotting and saving results in final form Save unprocessed data in LabVIEW

  9. This Week Assignment 4 is due Friday, February 24

  10. This Week Assignment 4 is due Friday, February 24 Lab 2 is due next Friday, March 2

  11. This Week Assignment 4 is due Friday, February 24 Lab 2 is due next Friday, March 2 In both case you will record accelerometer signals

  12. This Week Assignment 4 is due Friday, February 24 Lab 2 is due next Friday, March 2 In both case you will record accelerometer signals The accelerometers have a sensitivity of something like

  13. Assignment 4 Your assignment 4 submission should have MS Word file that explains what you did for each part of the assignment One or more LabVIEW VIs that you used for the assignment Several different m-files, one for each part of the problem You can work with only one other person, list their name in the MS Word file as your lab partner Each of you should collect and process different data

  14. Lab 2 In the second lab you will be asked you reduce imbalance induced vibrations in a spinning disk

  15. Lab Reports You should follow the structure used for the first lab report for the next three lab reports You can’t use any text from lab report 1 unless you wrote it You must: write all your own text make your own figure collect your own data

  16. Lab Reports You should follow the structure used for the first lab report for the next three lab reports Make sure your figures are readable

  17. Lab Reports You should follow the structure used for the first lab report for the next three lab reports Label axes with physical units like displacement (m) or time (s) rather than voltage (V) Make sure your figures are readable

  18. Lab Reports You should follow the structure used for the first lab report for the next three lab reports Label axes with physical units like displacement (m) or time (s) rather than voltage (V) Make sure your figures are readable

  19. Lab Reports You should follow the structure used for the first lab report for the next three lab reports No titles above the plots Label axes with physical units like displacement (m) or time (s) rather than voltage Make sure your figures are readable

  20. Lab Reports You should follow the structure used for the first lab report for the next three lab reports No titles above the plots Label axes with physical units like displacement (m) or time (s) rather than voltage Make sure your figures are readable Used numbers captions below the figure Figure 1. The displacement response of the …

  21. Lab Reports You should follow the structure used for the first lab report for the next three lab reports No titles above the plots Label axes with physical units like displacement (m) or time (s) rather than voltage Make sure your figures are readable Used numbers captions below the figure Figure 1. The displacement response of the …

  22. Lab 2 In the second lab you will be asked you reduce imbalance induced vibrations in a spinning disk Step 1) measure the vibration induced your spinning disk By measuring the acceleration for the motor frame AC couple the data and integrate double integrate the data to get displacement. Calculate the RMS displacement, Ro

  23. Lab 2 In the second lab you will be asked you reduce imbalance induced vibrations in a spinning disk Step 2) make three more measurements with a trial mass at 0°, 120° and 240° And calculate the RMS displacements, R1, R2 and R3

  24. Lab 2 In the second lab you will be asked you reduce imbalance induced vibrations in a spinning disk Step 3) calculate the imbalance parameters using Note the separation angle is

  25. Lab 2 In the second lab you will be asked you reduce imbalance induced vibrations in a spinning disk Step 4) using T, the weight of your trial mass and the equation below, calculate a correction mass and angular location Note used atan2.m Where ru is the radial distance to the correction mass rtis the radial distance to the trial masses

  26. Lab 2 In the second lab you will be asked you reduce imbalance induced vibrations in a spinning disk Step 5) Determine the RMS displacement (presumably reduced) with the correction mass. Note: all five measurements should be made at the same motor speed.

  27. Lab 2 In the second lab you will be asked you reduce imbalance induced vibrations in a spinning disk Step 5) Determine the RMS displacement (presumably reduced) with the correction mass. Note: all five measurements should be made at the same motor speed. Punch line statement for the conclusions How much did the imbalance induced vibration change from step 1 to step 5?

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