Mobility Analysis of Some “Paradoxical Mechanisms” Using a General Methodology

The “Modified Gru¨bler-Kutzbach Criterion” achieved success in calculating the mobility of some mechanisms. Recently, with continuous applications of the criterion, a systematic methodology not only a formula has finally formed. This paper briefly presents the systematical methodology and deals with the analysis of full-cycle mobility for four representative “paradoxical mechanisms”. The purpose of this paper is to show that the methodology is more feasible and general.