How Can Scattered Data Impact Tool Performance Analysis?

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SUMMARY

The discussion centers on analyzing the performance of two soil engaging tools, A and B, used in a tillage machine, focusing on the impact of scattered data on force and speed measurements. The user faces challenges in establishing a reliable regression curve due to outliers and noise in the data. Suggestions include employing time-based filtering to eliminate impulse shocks and conducting statistical analyses to evaluate the spread of data, particularly the residuals from linear regressions. The need for more repetitions and controlled conditions is emphasized to improve data reliability.

PREREQUISITES
  • Understanding of linear regression analysis and residuals
  • Familiarity with statistical analysis techniques for variance evaluation
  • Knowledge of time-based data filtering methods
  • Experience with agricultural machinery performance metrics
NEXT STEPS
  • Learn about time-based filtering techniques for data noise reduction
  • Explore statistical methods for analyzing variance in experimental data
  • Investigate the use of 3D plots to visualize relationships between force, speed, and depth
  • Study the principles of quadratic regression models for force vs. speed analysis
USEFUL FOR

Researchers, agricultural engineers, and data analysts involved in performance testing of agricultural machinery, particularly those focused on optimizing tool efficiency and data analysis methodologies.

  • #31
I'm sorry, without thinking about it, I was using the time-series terminology "cross correlation". That was probably misguiding. It's just the correlation between the two variables that I was thinking of.
 
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  • #32
I have also computed the Pearson's correlation coefficient of the average values of draft with respect 'speed and depth, respectively. The correlation is higher with speed than with depth.

Instead, by computing the Pearson's correlation coefficient of the time based draft with respect 'time based speed and depth, respectively, sometimes, the reselts are pretty variable. Sometimes, the correlation is strong, other times the correlation is weak. Sometime, the correlation is stronger with speed, other times is stronger with depth.
 

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