By Marco Ceccarelli, Victor A. Glazunov
This lawsuits quantity comprises papers which have been chosen after overview for oral presentation at ROMANSY 2014, the twentieth CISM-IFToMM Symposium on conception and perform of Robots and Manipulators. those papers disguise advances on a number of facets of the broad box of Robotics as relating concept and perform of Robots and Manipulators.
ROMANSY 2014 is the 20 th occasion in a sequence that begun in 1973 as one of many first convention actions on the earth on Robotics. the 1st occasion used to be held at CISM (International Centre for Mechanical technological know-how) in Udine, Italy on 5-8 September 1973. It was once additionally the 1st subject convention of IFToMM (International Federation for the advertising of Mechanism and laptop technology) and it used to be directed not just to the IFToMM community.
Proceedings volumes of ROMANSY were continually released to be to be had, additionally after the symposium, to a wide public of students and architects with the purpose to provide an outline of recent advances and traits within the idea, layout and perform of robots.
This court cases quantity, like prior ones of the sequence, comprises contributions with achievements masking many fields of Robotics as idea and perform of Robots and Manipulators that may be an proposal for destiny developments.
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Extra info for Advances on Theory and Practice of Robots and Manipulators: Proceedings of Romansy 2014 XX CISM-IFToMM Symposium on Theory and Practice of Robots and Manipulators
Convex cones in screw spaces. Mech. Mach. Theory 40, 710–727 (2005) 11. : Constraint and singularity analysis of the exechon tripod. In: Proceedings of the ASME IDETC&CIE, DETC2012-71184 (2012) Singularity Analysis of 3-DOF Translational Parallel Manipulator Pavel Laryushkin, Victor Glazunov and Sergey Demidov Abstract In this paper we analyze singularities of the 3-DOF translational parallel mechanism with three kinematic chains, each consisting of five revolute joints. Both Jacobian and Screw theory methods are used to determine singular points of different types.
Bidaud The eigenvalues of the matrix JJt are the roots its characteristic polynomial, which can be determined by: PðXÞJJt cos2 h2 À X À sin h cos h 2 2 0 ¼ det 0 0 0 cos2 h2 À X ¼ det À sin h2 cos h2 0 À sin h2 cos h2 sin2 h2 þ 1 À X 0 0 0 0 À sin h2 cos h2 sin2 h2 þ 1 À X 0 0 0 1ÀX 0 0 0 0 0 0 1ÀX 0 0 0 0 0 1ÀX 1ÀX 0 0 1 À X 0 1ÀX 0 Á det 0 0 1ÀX 0 0 0 0 0 0 1ÀX 0 0 ¼ ð1 À XÞ4 ðX 2 À 2X þ cos2 h2 Þ: ð2Þ The eigenvalues of the matrix JJt are thus: & X ¼ 1; X ¼ 1 Æ j sin h2 j ð3Þ Therefore we can obtain the conditioning number of the mechanism as follow: sﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃﬃ 1 K¼ 1 À j sin h2 j ð4Þ where h2 represents the varus/valgus angular position, which is limited to 20° here.
If n = 2 this results in a plane image (a circle inversion of the straight model) with a single point at infinity and a finite point blown-up. In Sects. 4 and 5 we use two models which map a three-system onto exactly such an image: a single-point-compactified plane with one other point blown-up. 3 The Ball Circle of the General Two-System The screw system, P1 ¼ PðA2 Þ, of a two-dimensional subspace A2 & seð3Þ, is classified as general, when it has a pair of generators, A2 ¼ Span ðn1 ; n2 Þ, on the principal screws of the system, with different finite pitches, h1 [ h2 , and intersecting perpendicular axes.
Advances on Theory and Practice of Robots and Manipulators: Proceedings of Romansy 2014 XX CISM-IFToMM Symposium on Theory and Practice of Robots and Manipulators by Marco Ceccarelli, Victor A. Glazunov