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Platform Robots: Gradation of Mechanisms Based on Their Structural Error Performance
Technical Paper
2001-01-0983
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
Robot arms which received greater attention in the recent past are open chain linkages. Each joint in these robot arms, is actuated independently. While possessing many advantages such as large workspace and maneuverability, they do suffer from disadvantages like less rigidity, accumulation of mechanical errors from shoulder to end effector, control problems etc. The alternative to the open chain robot arms is the in - parallel actuator arrangement often referred to as the platform-type whose successful application is reported by many investigators. Multi-degree-of-freedom linkage Mechanisms are now receiving active consideration for application as platform type robots. In fact in the literature, a number of distinct multi degree of freedom planar linkage mechanisms are available and all of them can be considered as platform type Robots. In this paper numerical measures are proposed to compare all the distinct planar linkage mechanisms at the conceptual stage of design in the category of 9 link, 2 degree of freedom and 10 link,3 degree of freedom, from the view point of structural error performance. The proposed method is based on the deployment of design parameters in different topological features of the chain Viz., links, Joints and loops.
Authors
Citation
Pathapati, V. and Rao, A., "Platform Robots: Gradation of Mechanisms Based on Their Structural Error Performance," SAE Technical Paper 2001-01-0983, 2001, https://doi.org/10.4271/2001-01-0983.Also In
References
- Castelli V.Parenti and InnocentiC., “Forward Displacement Analysis of Parallel Mechanisms: Closed form solution of PPr 35 and PP r -35 structures”, ASME journal of Mechanical Design, 114 (1992) PP.68-72.
- HuntK.H., “Structural Kinematics of In -Parallel Actuated Robot Arms,” ASME journal of Mechanism, Transmission and Automation in Design, 105(1983), PP: 705 -712.
- Thing K.L. and Tsai G.H., “Mobility and synthesis of Five - bar programmable Linkages,” 9th applied Mechanism conference, Missouri PP: 1111 -1118.
- PennockG.R. and Kassner D.I., “Kinematic Analysis of a planar Eight - Bar Linkage - Application to a platform type robot,” ASME journal of Mechanical Design, 144 (1992) PP: 87 -95
- RaoA.C., “On the flexibility of spatial kinematic chains,” Canadian society of mechanical Engineers, 10 (1986) PP. 213 -218.
- Rao A.C., “On the performance of kinematic chains,” Canadian society of Mechanical Engineers, 80 (1988) PP.99-103.
- RaoA.C., “Comparison of plane and spatial kinematic chains for structural error performance using Pseudo Hamming distances,” Indian journal of Technology, 26 (1988) PP. 155-160.
- RaoA.C., “Structure Dependent Dynamic Behaviour of Linkages,” Indian journal of Technology, 30(1992) PP.381 -386.
- RaoA.C. and RaoC.N., “Loop Based Pseudo Hamming values -I,”Mechanism and Machine Theory, 28(1993) PP. 113-127.
- RaoA.C. and RaoC.N., “Loop Based Pseudo Hamming Values -II,” Mechanism and Machine Theory, 28(1993) PP. 129-143.
- RaoA.C., “Topological Characteristics of Linkage Mechanisms with particular reference to Plat form - Type Robots,” Mechanism and Machine theory, 30(1995)PP.33 -42.
- RaoA.C., “Platform type planar robots: Topology based selection for rigidity and workspace,” Journal of Robotic systems, 14(1997) 355-364.
- RaoA.C., “Structure - based Dynamic Characteristics of planar Linkages including platform - Type Robots,” Journal of Robotic systems 14(1997) PP.621 -629.
- RaoA.C., and JagadishA., “Topology based characteristics of Kinematic Chain:Work space, Rigidity, Input joint and Isomorphism,” Mechanism and Machine theory, 33(1998)PP.625-638.
- FreudensteinF., “An analytical approach to the design of four bar mechanism,” ASME Transactions, 76(1954), PP.483-492.
- FreudensteinF., “Approximate synthesis of four bar linkages,” ASME Transactions, 77(1955), PP.853.
- McLarnan, C.W., “Synthesis of Six -Link mechanisms by Numerical Analysis,” ASME J. Engg. Industry, (1963) P.P.5-11.
- RaoA.C. and Pathapati V.V.N.R.Prasad Raju, “Loop based detection of Isomorphism among chains, Inversions and type of freedom in Multi Degree of freedom Chains,” ASME Journal of Mechanical Design,122(2000) PP.31 -42.
- Tischler, C.R., Samuel, A.F., and Hunt, K.H., “Kinematic chains for Robot Hands -1 orderly Number synthesis,” Mechanism and Machine Theory, 30(1975) PP.1193 -1215.