Infinitesimal displacement analysis of a parallel manipulator with circular guide via the differentiation of constraint equations

This paper considers several subproblems associated with solving the forward and inverse position and speed problems and defining singular configurations for a parallel robot with six degrees of freedom and six kinematic chains that move along a circular guide (rotopod). The solution of these subproblems is necessary for analyzing the topological features of the parallel robot and employing the results of such analysis in control algorithms design.