USE OF ORTHOGONAL ARRAYS IN MECHANISM SYNTHESIS

No single optimization method exists that is best suited to solve all path generation problems effectively [Erdman 1991]. Graphical illustra tions of the mechanism design space, given in this paper, attest to th e difficulties encountered in the optimization of path generation task s. An example has also been provided to illustrate the importance of a good initial guess in achieving proper convergence. Use of experiment al design techniques that are based on statistically designed orthogon al arrays is suggested in this paper, as an alternate method to solve mechanism design tasks. It will also be beneficial to use this method to obtain a good starting point for the traditional optimal synthesis procedures. Also, when a theoretical solution is translated into physi cal reality, manufacturing tolerances, joint clearances, and elasticit y in link members cause variations in mechanism performance. Orthogona l arrays and the related robust design procedures, suggested here, acc ount for such variations as well. Design examples are given to illustr ate the use of orthogonal arrays.