On adjustable spherical four-bar motion generation for expanded prescribed positions

Wen Tzong Lee, Kevin Russell, Qiong Shen, Raj S. Sodhi

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

This work formulates and demonstrates a method to synthesize two-phase adjustable spherical four-bar mechanisms to approximate substantially more prescribed rigid-body positions than with conventional motion generation methods [C.H. Suh, C.W. Radcliffe, Kinematics and Mechanism Design, John Wiley and Sons, New York, 1978]. An alternate set of mechanism constraint equations are formulated using the Method of Least Squares and solved for the adjustable spherical mechanism moving pivot variables. The example included demonstrates the synthesis of an adjustable spherical four-bar mechanism to approximate twice the number of prescribed rigid-body positions per phase than with a conventional method [C.H. Suh, C.W. Radcliffe, Kinematics and Mechanism Design, John Wiley and Sons, New York, 1978].

Original languageEnglish (US)
Pages (from-to)247-254
Number of pages8
JournalMechanism and Machine Theory
Volume44
Issue number1
DOIs
StatePublished - Jan 1 2009

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications

Keywords

  • Adjustable mechanisms
  • Four revolute spherical mechanisms
  • Method of least squares
  • Motion generation
  • Spherical mechanisms

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