Type synthesis and reconfiguration analysis of a class of variable-DOF single-loop mechanisms

2015 ◽  
Vol 85 ◽  
pp. 116-128 ◽  
Author(s):  
Xianwen Kong ◽  
Martin Pfurner
Keyword(s):  
Type Synthesis ◽  
Single Loop

Type synthesis of 2R2T parallel mechanisms based on motion equivalent chain method

2014 ◽  
Vol 228 (17) ◽  
pp. 3209-3217 ◽  
Author(s):  
Wei Ye ◽  
Yuefa Fang ◽  
Sheng Guo ◽  
Haibo Qu
Keyword(s):  
Parallel Mechanism ◽  
Screw Theory ◽  
Parallel Mechanisms ◽  
Motion Pattern ◽  
Type Synthesis ◽  
Constraint Force ◽  
Single Loop ◽  
Loop Chain ◽  
Serial Chains

In this paper, the motion equivalent chain method is proposed and then applied to the type synthesis of a class of 2R2T parallel mechanism. The equivalent serial chains are synthesized for a specific 2R2T motion pattern based on screw theory. Feasible limb structures that provide a constraint couple and a constraint force are enumerated according to the reciprocity of the twist and wrench systems. Several motion equivalent single loop chains are constructed with the equivalent serial chains. Using motion equivalent single loop chains to replace the equivalent serial chains, a class of 2R2T parallel mechanisms is obtained based on the foundation of motion equivalent single loop chain structures.

Type synthesis of a class of novel 3-DOF single-loop parallel leg mechanisms for walking robots

2020 ◽  
Vol 145 ◽  
pp. 103695 ◽  
Author(s):  
Luquan Li ◽  
Yuefa Fang ◽  
Sheng Guo ◽  
Haibo Qu ◽  
Lin Wang
Keyword(s):  
Walking Robots ◽  
Type Synthesis ◽  
Single Loop ◽  
Leg Mechanisms

Type synthesis of spatial mechanisms on the basis of spatial single loop structural groups

1985 ◽  
Vol 20 (2) ◽  
pp. 95-101 ◽  
Author(s):  
Rasim I Alizade ◽  
E.T Hajiyev ◽  
George N Sandor
Keyword(s):  
Type Synthesis ◽  
Single Loop ◽  
Spatial Mechanisms

Type Synthesis of Single-Loop Overconstrained 6R Spatial Mechanisms for Circular Translation

2014 ◽  
Vol 6 (4) ◽  
Author(s):  
Xianwen Kong
Keyword(s):  
Parallel Mechanisms ◽  
Type Synthesis ◽  
Single Loop ◽  
Plane Symmetric ◽  
Research Areas ◽  
Revolute Joints ◽  
Spatial Mechanisms ◽  
Special Cases ◽  
Overconstrained Mechanisms ◽  
Self Motion

To discover single-degree-of-freedom (DOF) single-loop overconstrained mechanisms is still an open problem. This paper deals with the type synthesis of single DOF single-loop overconstrained 6RMCTs (6R spatial mechanisms for circular translation). These mechanisms provide alternatives to planar parallelograms and are also associated with self-motion of several translational parallel mechanisms. 6RMCTs are to be obtained using a construction approach in combination with the approaches to the type synthesis of parallel mechanisms. By imposing certain conditions on the hybrid overconstrained 6R (plano-spherical, plano-Bennett, double-spherical, and spherico-Bennett) mechanisms, Bricard plane symmetric mechanism, and Bricard line symmetric mechanism, six special cases of 6RMCTs are obtained. By combining planar parallelograms with these special mechanisms, the general cases of 6RMCTs are then constructed. Finally, 4R2H, 2R4H, and 6H mechanisms for circular translation are obtained from the above 6RMCTs by replacing one or more pairs of R (revolute) joints with parallel axes each with a pair of H (helical) joints with parallel axes and the same pitch. This work contributes to the research on overconstrained six-bar mechanisms and further reveals that the research areas of parallel mechanisms and single-loop overconstrained mechanisms are closely related.

Type synthesis of deployable single-loop overconstrained linkages based on Bennett linkages

2018 ◽  
Vol 120 ◽  
pp. 1-29 ◽  
Author(s):  
Hongwei Guo ◽  
Xiaoke Song ◽  
Lifang Li ◽  
Zongquan Deng ◽  
Rongqiang Liu ◽  
...  
Keyword(s):  
Type Synthesis ◽  
Single Loop ◽  
Overconstrained Linkages

A comparative study on the demodulation capability of a single loop optoelectronic oscillator with and without a dynamic band Pass filter

Optik ◽  
2021 ◽  
Vol 226 ◽  
pp. 165924
Author(s):  
Shantanu Mandal ◽  
Kousik Bishayee ◽  
Arindum Mukherjee ◽  
B N Biswas ◽  
Chandan Kumar Sarkar
Keyword(s):  
Comparative Study ◽  
Band Pass Filter ◽  
Optoelectronic Oscillator ◽  
Pass Filter ◽  
Single Loop ◽  
Band Pass
Sign in / Sign up

Export Citation Format

Share Document