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Chebyshev linkage - two questions

Emerald III

Chebyshev linkage - two questions

I have two questions to one Chebyshev (Tchebyshev - Чебышёв) linkage (see more https://en.wikipedia.org/wiki/Chebyshev_linkage)

1. Do you know how to change lengths of links in to get one (strictly) straight line of motion for point 4 or other curve? See please first animation and files in attach - Mathcad 15. I have a plan use the MinErr function but not too simple!

2. Why I have an error by changing L14? See the animation two. When I use not the solve operator but the Find (numeric) function - no problem (see the animation 3)

Tcheb-1.gifTcheb-2.gifTcheb-3.gif

1 REPLY 1

Re: Chebyshev linkage - two questions

I have solved the problem by I am waiting more simple!

Tcheb-2-Opt.gif

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