This partial calculator sorts and totals four selected angular values only. It does not classify a spherical 4R linkage or predict crank rotation, assembly or binding.
Partial · Selected Spherical-Arc Ledger
Sort and total four selected angular values without asserting spherical-linkage closure or rotatability.
Equation Used
- Angles are selected positive values in degrees.
- No minimum-representation reduction is inferred.
- Closure, assembly, singularities and rotatability are excluded.
The figure is an angular ledger, not a closed spherical linkage.
Supported angular bookkeeping
The four selected values are sorted to report their minimum, maximum, total and range. No antipodal reduction, loop closure or rotatability test is applied.
Use and boundary
Use the ledger to inspect selected angular data before a fully defined spherical-linkage analysis.
Selected-value identities
minimum=min(ai); maximum=max(ai); total=sum(ai); range=maximum-minimum.
Default example
For 70, 35, 80 and 60 degrees, minimum is 35 degrees, maximum is 80 degrees, total is 245 degrees and range is 45 degrees.
Unsupported classification removed
The former single sorted-arc inequality was not a complete spherical rotatability or binding test.
Questions
Is this a spherical Grashof test?
No.
Does the figure close a spherical loop?
No.
References
References & Further Reading
- Wikipedia contributors. Four-bar linkage. Wikipedia
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