...Jian-Dong Ke; Yu-Jen Wang; Jhy-Cherng Tsai In this paper, two models were proposed to estimate the positioning error of a 3-translational prismatic–universal–universal parallel kinematic mechanism. The two models were a kinematic error model (KEM) and a backpropagation neural network (BPNN) model...

...Lingmin Xu; Xinxue Chai; Ye Ding This article presents a hybrid robot for machining the inner cavity of large-scale workpiece, and it is composed of three parts: a mobile device with 1T degree-of-freedom (DoF), a serial module with 1R1T DoFs, and a 2RRU-RRS parallel kinematic mechanism (PKM...