Huang Z,Fang Y F.Kinematic characteristics and analysis of 3-DOF actuated pyramid mechanisms[J].Mechanism and Machine Theory,1996,31 (8):1 009~1 018.
[3]
Carretero J A,Podhorodeski R P,Nahon M A,et al.Kinematic analysis and optimization of a new three degree-of-freedom spatial parallel manipulator[J].Mechanical Design,2000,122 (3):17~24.