The general procedure for the sine sweep is as follows:
1. Attach dynamometer to load train. Allow dynamometer to stabilize. Exercise dynamometer through the load range to be recorded.
2. Set frame to zero load per load cell. Allow dynamometer to stabilize.
3. With load cell at zero load, zero dynamometer.
4. Record synchronized timed data, including load cell force and dynamometer force, at the frequencies and the load range desired.
5. For the sweep, begin recording at or below the frequency of interest. Then increase the frequency at a slow rate, monitoring the test machine to ensure it controls properly, reaching the intended peak and valley endlevels. A suitable rate may be 0.25 Hz / s. When the frequency has met the maximum desired, recording and cycling may be stopped.
This comment thread accumulates notes about the general sine sweep testing and analysis process. Replies to this comment include individual comments for each step of the process. Also additional material that may be helpful. Thus if you have issues with a specific step you can reply to the step specific comment. If you have general issues you can reply to this comment.
Use the first line of this comment in any new email thread so that you can find those discussions too.
If you would like to start an email thread that discusses any comment here in more detail use the first line of that comment as the subject of your email thread. To start an email thread for one of the step specific items, use the first line of that comment as your subject line.
Fundamentally, what you are doing is making sure that the topic and the unique ID for any comment is used as the subject of the first email of a conversation. In that manner when you search your emails for the ID you will find both your initial email thread and any replies to that. Additionally by letting your collaborators know about the importance of the ID, they can put that as the first line of the first email of any topic conversation they start. Then all this material will be found when searching for the ID.
1) Get the starter workbook from the ASTM collaboration site for this collaboration (80292). Save the zip file in the same folder as your data files. Then you can unzip a copy for each data file to be evaluated.
2) Give the workbook a Notes ID, like these other notes, so that a user will know how to quicly get to your markups. Simply include in the Notes part of the workbook a link to the Top comment for your workbooks comments/notes. From there the user will use your ID to do a find on the web page for your specific notes.
3a) Import your data file into a blank worksheet.
3b) Next, copy the header cells above the column titles and paste that into the Notes worksheet. Plan ahead by inserting some blank rows in the Notes worksheet so that there is room for the header information.
3c) Then remove from the imported data sheet any header row other than the column titles, after first appending the units to each column name.
4a) After inserting all the columns you want to use, extend the Item column to have an item number for each row of the imported data.
4b) Move the item column to be next to the left most calculation column.
4c) fix the Force Adj and Dyn Adj column calculations for the first row, so that they point to the correct data columns.
5) Lastly. select those first 3 cells and then double-click on the small black square to the lower right of them. That will do a fill down for those updated calculations. You might have to do it twice. First to fill the existing cells. Then to do again from the last existing cell to fill the empty cells below that row.
6) Delete unneeded data (i.e. the new sheet used for the import, and the no longer needed data columns on the data sheet)
7) Update the file name that is the second line of each plots title
At this point you are operational. Move on now to (ssss) to do the plot reviews.
Fundamentally, a Material test system, Boos the position of its actuator piston rod. If something is attached to the piston rod, a force is generated in that object. The first subsection of this topic will cover motions. What moves when the piston rod moves. The second subsection will discuss how the machines motions and or applied forces very depending on the desired magnitude of the parameter and the frequency of operation.
Use the hyperlink at the end of this comment to take you directly to the theory of operation section of the document.
This is for helping users adjust the phasing, scaling, and offset of the force and dynamometer signals so as to minimize error in a specific range of the sweep. Put the first line of this comment into an email that starts a thread to discuss this issue.
This is a random collection of emails that get shared in support of helping people get started using the material in this post. I sent the first email, with the above ID at the top of the message. You should be able to do a search in your email client and find any emails from that thread just by searching for the ID (fjaa184048).
If you are reading this on your mobile phone, please be aware of the following. It appears that the comment link is not properly handled by the Substack application on the iPhone. It was taking me to just a generic location and sub tech. What I found works as the following.
1) hold my finger on the link until a pop-up menu appears
2) instead of choosing open in Substack I picked open in Safari.
3) Safari opened quickly. It took a little while ago before the comments page opened up, but it did open without me having to do anything more other than be patient.
Once it opened, I was able to read the comments. In fact was also able to add his comment directly from my mobile phone. Pretty slick if you ask me!
I just sent an email to Kirk with this tutorial ID and some introductory material. In theory now he and I will go about our normal activities as we figure out how to draw in others to this sine sweep method evaluation. The emails should all tie together just like the comments in this thread. In the future once a next step is clear that can be folded into the primary. documentation at an appopriate location.
This is intended as the starting point for a reader of this document. As of today, June 28, 2025 The basic information is there. Please add requests and suggestions by replying to this comment where you find you need additional information.
Click on the post link below to jump directly into the document at the summary section. Be sure to take advantage of the links below the section titles as quick ways to move around the document.
As you become more familiar with the document, you will probably also find that using the FIND function in the document gives you another quick way to go to specific spots you were interested in reading.
The general procedure for the sine sweep is as follows:
1. Attach dynamometer to load train. Allow dynamometer to stabilize. Exercise dynamometer through the load range to be recorded.
2. Set frame to zero load per load cell. Allow dynamometer to stabilize.
3. With load cell at zero load, zero dynamometer.
4. Record synchronized timed data, including load cell force and dynamometer force, at the frequencies and the load range desired.
5. For the sweep, begin recording at or below the frequency of interest. Then increase the frequency at a slow rate, monitoring the test machine to ensure it controls properly, reaching the intended peak and valley endlevels. A suitable rate may be 0.25 Hz / s. When the frequency has met the maximum desired, recording and cycling may be stopped.
Proposed Process (fjaa110012)
********
This comment thread accumulates notes about the general sine sweep testing and analysis process. Replies to this comment include individual comments for each step of the process. Also additional material that may be helpful. Thus if you have issues with a specific step you can reply to the step specific comment. If you have general issues you can reply to this comment.
========
Primary Process Steps
*) Collect data (N149811588)
*) Integrate with workbook (N149811290)
*) Compute Full Error (N149810991)
*) Plot full error signal (N149810674)
*) Select target region (N149810173)
*) Adjust phasing, scale, and offset (N149809805)
*) Check dyno scale (N149809455)
*) Proceed with test (N149808798)
========
Special Topics
*) Email discussions (N149853436)
========
Post: https://albrightj.substack.com/i/165973034/proposed-process
Tasks for Proposed Process (N154925750)
********
********
Here:
https://albrightj.substack.com/p/pvs002f-analysis/comment/154925750
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Email discussions (N149853436)
********
Use the first line of this comment in any new email thread so that you can find those discussions too.
If you would like to start an email thread that discusses any comment here in more detail use the first line of that comment as the subject of your email thread. To start an email thread for one of the step specific items, use the first line of that comment as your subject line.
Fundamentally, what you are doing is making sure that the topic and the unique ID for any comment is used as the subject of the first email of a conversation. In that manner when you search your emails for the ID you will find both your initial email thread and any replies to that. Additionally by letting your collaborators know about the importance of the ID, they can put that as the first line of the first email of any topic conversation they start. Then all this material will be found when searching for the ID.
********
Here:
https://albrightj.substack.com/p/pvs002f-analysis/comment/149853436
Collect data (N149811588)
********
Kirk is working this issue. See the following comment thread:
https://albrightj.substack.com/p/pvs002f-analysis/comment/138030093
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Integrate with workbook (N149811290)
********
Import your test data (N150156101)
Fix the calculations (N150155989)
Study plot(s) (N150155833)
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Import your test data (N150156101)
********
1) Get the starter workbook from the ASTM collaboration site for this collaboration (80292). Save the zip file in the same folder as your data files. Then you can unzip a copy for each data file to be evaluated.
2) Give the workbook a Notes ID, like these other notes, so that a user will know how to quicly get to your markups. Simply include in the Notes part of the workbook a link to the Top comment for your workbooks comments/notes. From there the user will use your ID to do a find on the web page for your specific notes.
3a) Import your data file into a blank worksheet.
3b) Next, copy the header cells above the column titles and paste that into the Notes worksheet. Plan ahead by inserting some blank rows in the Notes worksheet so that there is room for the header information.
3c) Then remove from the imported data sheet any header row other than the column titles, after first appending the units to each column name.
4a) After inserting all the columns you want to use, extend the Item column to have an item number for each row of the imported data.
4b) Move the item column to be next to the left most calculation column.
4c) fix the Force Adj and Dyn Adj column calculations for the first row, so that they point to the correct data columns.
5) Lastly. select those first 3 cells and then double-click on the small black square to the lower right of them. That will do a fill down for those updated calculations. You might have to do it twice. First to fill the existing cells. Then to do again from the last existing cell to fill the empty cells below that row.
6) Delete unneeded data (i.e. the new sheet used for the import, and the no longer needed data columns on the data sheet)
7) Update the file name that is the second line of each plots title
At this point you are operational. Move on now to (ssss) to do the plot reviews.
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/149811290
Fix the calculations (N150155989)
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/149811290
Study plot(s) (N150155833)
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/149811290
Compute Full Error (N149810991)
********
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Plot full error signal (N149810674)
********
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Select target region (N149810173)
********
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Adjust phasing, scale, and offset (N149809805)
********
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Check dyno scale (N149809455)
********
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Proceed with test (N149808798)
********
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/129906683
Sine Sweep Trainer
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/sine-sweep-trainer
Region D
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/region-d
Region C
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/region-c
Region B
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/region-b
Region A
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/region-a
Outline
********
Comments TBD
========
Post: LinkTBD
Theory of Operation
********
Fundamentally, a Material test system, Boos the position of its actuator piston rod. If something is attached to the piston rod, a force is generated in that object. The first subsection of this topic will cover motions. What moves when the piston rod moves. The second subsection will discuss how the machines motions and or applied forces very depending on the desired magnitude of the parameter and the frequency of operation.
Use the hyperlink at the end of this comment to take you directly to the theory of operation section of the document.
========
Post: https://albrightj.substack.com/i/165973034/theory-of-operation
Performance Curves
********
Comments TBD
========
Post: LinkTBD
Motions
********
Comments TBD
========
Post: LinkTBD
Introduction
********
Comments TBD
========
Post: LinkTBD
Features and Methods
********
Reply to this comment when talking about the Features and Methods section.
========
Post: https://albrightj.substack.com/i/165973034/features-and-methods
Tutorials
********
Check the replies for tutorials. A partial listing will be added here as time goes by.
1) fjaa184048: Getting started with PVS002f (email thread)
2) fjaa103216: Making adjustments (email thread)
========
Post: https://albrightj.substack.com/i/165973034/tutorials
Document Navigation
TopicID: fjaa124705
********
This is for helping users navigate the documentation.
********
Post: https://albrightj.substack.com/i/165973034/document-navigation
fjaa103216: Making adjustments
********
This is for helping users adjust the phasing, scaling, and offset of the force and dynamometer signals so as to minimize error in a specific range of the sweep. Put the first line of this comment into an email that starts a thread to discuss this issue.
********
Post: https://albrightj.substack.com/i/165973034/making-adjustments
fjaa184048: Getting started with PVS002f
********
This is a random collection of emails that get shared in support of helping people get started using the material in this post. I sent the first email, with the above ID at the top of the message. You should be able to do a search in your email client and find any emails from that thread just by searching for the ID (fjaa184048).
========
Post: https://albrightj.substack.com/i/165973034/getting-started
If you are reading this on your mobile phone, please be aware of the following. It appears that the comment link is not properly handled by the Substack application on the iPhone. It was taking me to just a generic location and sub tech. What I found works as the following.
1) hold my finger on the link until a pop-up menu appears
2) instead of choosing open in Substack I picked open in Safari.
3) Safari opened quickly. It took a little while ago before the comments page opened up, but it did open without me having to do anything more other than be patient.
Once it opened, I was able to read the comments. In fact was also able to add his comment directly from my mobile phone. Pretty slick if you ask me!
I just sent an email to Kirk with this tutorial ID and some introductory material. In theory now he and I will go about our normal activities as we figure out how to draw in others to this sine sweep method evaluation. The emails should all tie together just like the comments in this thread. In the future once a next step is clear that can be folded into the primary. documentation at an appopriate location.
Settings Table
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/settings-table
Method Summaries
********
Comments TBD
========
Post: LinkTBD
Offsetting
********
Comments TBD
========
Post: LinkTBD
Scaling
********
Comments TBD
========
Post: LinkTBD
Phase Shifting
********
Comments TBD
========
Post: LinkTBD
Sine Sweep
********
Follow the Post link to get more details.
========
Post: https://albrightj.substack.com/i/165973034/sine-sweep
Kirk has provided instructions here.
https://open.substack.com/pub/albrightj/p/pvs002f-analysis?comments=true&commentId=137910163
********
Up:
https://albrightj.substack.com/p/pvs002f-analysis/comment/127502623
Taper Off-Amplitude Dependence
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/taper-off-amplitude-dependence
Blip A-Distortion
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/blip-a-distortion
Blip B-Adjust
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/blip-b-adjust
Pinch Zone-Adjust
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/pinch-zone-adjust
Launch Peaks-Adjust
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/launch-peaks-adjust
Cycle-Adjust
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/cycle-adjust
Ramp Up-Adjust
********
Comments TBD
========
Post: https://albrightj.substack.com/i/165973034/ramp-up-adjust
Figures-Regions
********
Reply to this comment when talking about the Figures-Regions section.
========
Post: https://albrightj.substack.com/i/165973034/figures-regions
Launch Region
********
Dogleg Region
********
Pinch Zone Region
********
Blip B Region
********
Blip A Region
********
Taper Off Region
********
Figures-Zoom
********
Reply to this comment when talking about the Figures-Zoom section.
========
Post: https://albrightj.substack.com/i/165973034/figures-zoom
Final Phase Shift
Blip A
Blip B
Pinch Zone
Dogleg
Launch Peaks
Full Sweep
Summary
TopicID: fjaa113036
********
This is intended as the starting point for a reader of this document. As of today, June 28, 2025 The basic information is there. Please add requests and suggestions by replying to this comment where you find you need additional information.
Click on the post link below to jump directly into the document at the summary section. Be sure to take advantage of the links below the section titles as quick ways to move around the document.
As you become more familiar with the document, you will probably also find that using the FIND function in the document gives you another quick way to go to specific spots you were interested in reading.
========
Post: https://albrightj.substack.com/i/165973034/summary
Frame Motions / Performance Envelope (fjaa134550)
********
Attach comments by replying to this comment.
Sample Error Plots (fjaa134642)
********
Attach comments by replying to this comment.