Abstract

The forward displacement analysis of redundant tetrahedron based variable geometry truss manipulators is obtained based on BP neural network, and then a solution to inverse displacement analysis problem is obtained. According to the above network model, the first- and second-order influence coefficients are derived, and the pseudo-inverse of Jacobian matrix is obtained by using a neural network. Finally the simulation calculation of kinematics for a seven celled tetrahedron-tetrahedron variable geometry truss manipulator is given for illustration.

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