Squid Lubricity Rating: Difference between revisions

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=Scoring=
=Scoring=


Currently our rating system works on a scale of 0-100 and is based on time-aggregated data from 5 categories: [[Scar Size]], [[Operating Temperature]], [[Required Power]], [[Maximum Load]], and [[Dry Start]].
Currently our rating system works on a scale of 0-100 and is based on time-aggregated data from up to 5 categories: [[Scar Size]], [[Operating Temperature]], [[Required Power]], [[Maximum Running Load]], and [[Maximum Starting Load]].


The equation for all scoring works as follows:
The equation for all scoring works as follows:
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* [[Operating Temperature]] = 0.01
* [[Operating Temperature]] = 0.01
* [[Required Power]] = 0.2
* [[Required Power]] = 0.2
* [[Maximum Load]] = 0.08
* [[Maximum Running Load]] = 0.08
* [[Dry Start]] = 0.25
* [[Maximum Starting Load]] = 0.25


''i_c'' values are:
''i_c'' values are:
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* [[Operating Temperature]] = 260' F
* [[Operating Temperature]] = 260' F
* [[Required Power]] = 25 W (all scores below 20 W receive 100 pts.)
* [[Required Power]] = 25 W (all scores below 20 W receive 100 pts.)
* [[Maximum Load]] = 8,333 kg/cm^2; 120,000 psi (all scores above 120,000 psi receive 100 pts.)
* [[Maximum Running Load]] = 8,333 kg/cm^2; 120,000 psi (all scores above 120,000 psi receive 100 pts.)
* [[Dry Start]] = 1,406 kg/cm^2; 20,000 psi  (all scores above 20,000 psi receive 100 pts.)
* [[Maximum Starting Load]] = 1,406 kg/cm^2; 20,000 psi  (all scores above 20,000 psi receive 100 pts.)


''Why '''P'''ounds per '''S'''quare '''I'''nch (psi) when other measurements are metric?'' Similarly to Fahrenheit, psi has more convenient scaling for our uses than kg/cm^2 (kg per square centimeter). Numbers will be offered in both formats as often as possible.
''Why '''P'''ounds per '''S'''quare '''I'''nch (psi) when other measurements are metric?'' Similarly to Fahrenheit, psi has more convenient scaling for our uses than kg/cm^2 (kilograms per square centimeter). Numbers will be offered in both formats as often as possible.


The final point score is calculated using the following equation:
The final point score is calculated using the following equation:
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==SLR-2==
==SLR-2==
SLR-2 for the most part is the same as SLR-3, except it only used [[Scar Size]], [[Operating Temperature]], and [[Required Power]]. The equations and scalars are otherwise identical.


SLR-2 has been replaced by SLR-3.
SLR-2 used 3 categories for scoring: [[Scar Size]], [[Operating Temperature]], and [[Required Power]].
The weighting values for SLR-2 are:
* [[Scar Size]] = 1.2
* [[Operating Temperature]] = 1.0
* [[Required Power]] = .8


==SLR-3==
==SLR-3==
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* [[Operating Temperature]] = 1.2
* [[Operating Temperature]] = 1.2
* [[Required Power]] = .9
* [[Required Power]] = .9
* [[Maximum Load]] = .8
* [[Maximum Running Load]] = .8
* [[Dry Start]] = 1.1


As you can quickly tell, there's a greater chance to evenly microwave a slice of cold pizza than there is to score a perfect 100.
==SLR-4==


==SLR-4==
In SRL-4, the weighting values are:
* [[Scar Size]] = 1.2
* [[Operating Temperature]] = 1.2
* [[Required Power]] = .9
* [[Maximum Running Load]] = .8
* [[Maximum Starting Load]] = 1.1

Revision as of 16:31, 2 July 2020

Introduction

Scoring

Currently our rating system works on a scale of 0-100 and is based on time-aggregated data from up to 5 categories: Scar Size, Operating Temperature, Required Power, Maximum Running Load, and Maximum Starting Load.

The equation for all scoring works as follows:

Rating equation.png

Where:

  • P = Points
  • i = "Ideal" result
  • c = Category
  • R = Scalar
  • and 100 is the point offset (a maximum of 100 points available)

The 5 categories have a different scalar (R) to determine their scoring curve.

R_c values are:

i_c values are:

Why Pounds per Square Inch (psi) when other measurements are metric? Similarly to Fahrenheit, psi has more convenient scaling for our uses than kg/cm^2 (kilograms per square centimeter). Numbers will be offered in both formats as often as possible.

The final point score is calculated using the following equation:

Rating equation points.png

Where:

  • P = Points
  • W = Weighting value
  • c = Category
  • n = Variation number
  • t = Total
  • a = refers to the category number. SLR-3 having 5 total scoring categories.

SLR-2

SLR-2 has been replaced by SLR-3.

SLR-2 used 3 categories for scoring: Scar Size, Operating Temperature, and Required Power.

The weighting values for SLR-2 are:

SLR-3

In SRL-3, the weighting values are:

SLR-4

In SRL-4, the weighting values are:

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