Threshold Measurement

[Baji]

Hi Friends, I am working on threhold measurement module.

Find the attached plot

Blue - Servo current signal, Black - Position Command and Red - Position Feedback.

I am trying to find the how much current consumed to reverse the direction, I highlighted my region of intrest in the plot maually and I need the sugession how to automate this threshold measurement. Your ideas are welcome.

[Henrik_Volkers]

What are the 'rules' you applied while positioning the markers?

next step is to put them into an LV diagram

for example use search minimum of position t_p_min and use the value corr(t_p_min) as a threshold (positive slope) at corr(t) ....

filtering the data can help.... or fitting ... and most important: understand the physics behind the process!

if you have your rules and fail to code them: Post your try and a dataset.

[Baji]

You can see a curve in the Servo current during the direction change, thats my region of intrest. I attached data files for more details.

[crossrulz]

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@Baji wrote:

You can see a curve in the Servo current during the direction change, thats my region of intrest. I attached data files for more details.

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Yes, we can see that.  Now you need to Quantify those rules.  Personally, I would go from the minumum of the position command to the minimum of the actual position.  You can then do an integration of the current to get your energy usage.

[Baji]

I will try the same and give you update soon.