Design and Kinematic Analysis of the Novel Almost Spherical Parallel Mechanism Active Ankle

2018 ◽  
Vol 94 (2) ◽  
pp. 303-325 ◽  
Author(s):  
Shivesh Kumar ◽  
Bertold Bongardt ◽  
Marc Simnofske ◽  
Frank Kirchner
2018 ◽  
Vol 7 (4.10) ◽  
pp. 90 ◽  
Author(s):  
Arockia Selvakumar A ◽  
. .

This paper presents a numerical approach on kinematic analysis of 3-DOF parallel manipulator (PM). The proposed mechanisms constitute of PRS (Prismatic-Revolute-Spherical) parallel mechanism with two rotations and one translation. The forward and inverse kinematic equations of the PM are derived by position vector method. A total of 48 solutions are obtained for the forward kinematic equations using MATLAB. 


2010 ◽  
Vol 33 ◽  
pp. 513-517
Author(s):  
Xiu Qin Huang ◽  
Hui Ping Shen ◽  
Xiu Mei Xin

The two novel 1-translation and 2-rotation parallel mechanisms are investigated. An analytic solutions corresponding to the forward and inverse position are obtained. The influences by the three input variables on the three output variables are analyzed carefully and the valid working ranges of input and output variables are given. The pros and cons are addressed by comparing with the two parallel mechanisms, and the optimal one of the two mechanisms is produced.The work of the paper provided a solid foundation for mechanical structural design and real-time controlling of the novel parallel mechanism.


2012 ◽  
Vol 220-223 ◽  
pp. 1740-1743
Author(s):  
Xiu Qin Huang ◽  
Hui Ping Shen ◽  
Xiu Mei Xin

A novel 1-translation and 2-rotation parallel manipulator is investigated. An analytic solutions corresponding to the forward and inverse position are obtained. The influences by the three input variables on the three output variables are analyzed carefully and the valid working ranges of input and output variables are given. The work of the paper provided a solid foundation for mechanical structural design and real-time controlling of the novel parallel mechanism by structural parameter discussion.


Author(s):  
DU Hui ◽  
GAO Feng ◽  
PAN Yang

A novel 3-UP3R parallel mechanism with six degree of freedoms is proposed in this paper. One most important advantage of this mechanism is that the three translational and three rotational motions are partially decoupled: the end-effector position is only determined by three inputs, while the rotational angles are relative to all six inputs. The design methodology via GF set theory is brought out, using which the limb type can be determined. The mobility of the end-effector is analyzed. After that, the kinematic and velocity models are formulated. Then, workspace is studied, and since the robot is partially decoupled, the reachable workspace is also the dexterous workspace. In the end, both local and global performances are discussed using conditioning indexes. The experiment of real prototype shows that this mechanism works well and may be applied in many fields.


2013 ◽  
Vol 816-817 ◽  
pp. 821-824
Author(s):  
Xue Mei Niu ◽  
Guo Qin Gao ◽  
Zhi Da Bao

Kinematic analysis plays an important role in the research of parallel kinematic mechanism. This paper addresses a novel forward kinematic solution based on RBF neural network for a novel 2PRRR-PPRR redundantly actuated parallel mechanism. Simulation results illustrate the validity and feasibility of the kinematic analysis method.


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