Chebyshev's Lambda Mechanism

Tchebyshevs plantigrade machine
Lambda Mechanism

The Chebyshev's Lambda Mechanism[1] is a four-bar mechanism that converts rotational motion to approximate straight-line motion with approximate constant velocity.[2] The precise design trades off straightness, lack of acceleration, and what proportion of the driving rotation is spent in the linear portion of the full curve.[3]

The example to the right spends over half of the cycle in the near straight portion.

The Chebyshev's Lambda Mechanism is a cognate linkage of the Chebyshev linkage.

The linkage was first shown in Paris on the Exposition Universelle (1878) as "The Plantigrade Machine".[4][5]

The Chebyshev's Lambda Mechanism looks like the Greek letter lambda, therefore the linkage is also known as Lambda Mechanism.[6]

See also

References

  1. ↑ http://demonstrations.wolfram.com/ChebyshevsLambdaMechanism/
  2. ↑ Design of Machinery. 2011.
  3. ↑ DOM p134 Hoecken linkage (PDF).
  4. ↑ http://mech.spbstu.ru/Dzenushko_Dainis:_Walking_mechanisms_survey#The_Chebyshev_Walking_Mechanism
  5. ↑ "Archived copy". Archived from the original on 2014-11-29. Retrieved 2014-11-16.
  6. ↑ "Archived copy". Archived from the original on 2014-11-29. Retrieved 2014-11-16.
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