Extension of the Selective Precision Synthesis Method to theComputer-Aided Design and Optimization of Path Generating Spatial Mechanisms

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The synthesis of mechanisms is often based on the precision point approach, an extremely accurate method that has been used successfully in the past. However, the accuracy is not necessary nor attainable in real design. This research utilizes an alternative technique, the selective precision synthesis technique, whereby instead of precision conditions,realistic error envelopes are created for the mechanism parameters, thusenabling the designer to specify the levels of tolerance for the performance parameters. The method has been used successfully for planar mechanisms and is extended to spatial (three-dimensional) mechanisms in this project.