funnel
Five precision points, and one linkage
A four-bar function generator through five prescribed input–output angle pairs: seven unknowns, seven quadratic equations, Bézout 128. 12 of those paths arrive at a finite solution, 4 of those are real, and 1 of those has four positive link lengths. Only the last number answers a designer's question.
How many answerswide
Where it is used
- Five positions, and what is left The problem backwards
- Three problems called synthesis The problem backwards
- Where an optimiser starts The problem backwards
- How many points may be prescribed The problem backwards
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