The low coupling compliant straight -line mechanisms structure and parameter analysis

Aiming at the characteristics of large coupling error and complex structure of the single direction translation micro-displacement mechanism,some compliant mechanisms´ theoretic anysis and Finite element tests are discussed. The symmetric four bars structure which has the advantages of simple structure, good linearity and high sensitivity is determined as the basic forms of low coupling compliant straight -line mechanisms. Based on the relationship between the incision contour and the output displacement, the vertical incision contour is determined as the ideal hinge type, and effecting on output displacement of coupling compliant straight -line mechanisms by parameters is studied by method of finite element.