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Determination of static equilibrium conditions of a mobile terrestrial robotic complex

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Category: Geotechnical and mining mechanical engineering, machine building

Last Updated on 10 November 2019

Published on 26 October 2019

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Authors:

V.Strutynsky, Dr. Sc. (Tech.), Prof., orcid.org/0000-0001-5533-9915, National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A.Hurzhii, Academician of the National Academy of Sciences of Ukraine, Dr. Sc. (Tech.), Prof.,

orcid.org/0000-0001-6729-6254, National Academy of Pedagogical Sciences of Ukraine, Kyiv, Ukraine

L.Kozlov, Dr. Sc. (Tech.), Assoc. Prof., orcid.org/0000-0001-9652-1270, Vinnytsia National Technical University, Vinnytsia, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract:

Purpose. Determination of the location of a robotic complex and an object being manipulated.

Methodology. The applied theoretical methods are based on the solution of the problems of mechanical system statics, Monte-Carlo methods and analytical geometry with approbation of the obtained results on a robotic complex prototype.

Findings. The conditions of the static equilibrium of a mobile terrestrial robotic complex with a lever-type manipulator are established. They are based on the analytical correlation as the sum of moments of gravitational forces acting on the joints of the complex relative to the axes passing through the extreme supporing points of the chassis.

The location of the mass center of the robotic complex with the lever-type manipulator is determined. The area is created by the arc of a circle whose radius depends on the mass of the object captured by the manipulator. The influence of static chassis deformations on the permissible complex area location of the general mass center is defined. It is found how the complex location influenses the inclined surface of the tolerablearea of the mass center location in terms of the persistency. The efficientconditions of the large mass manipulated object location are set.

Originality. Necessary and sufficient conditions for the terrestrial robotic complex to remain in a static equilibrium when working with objects of significant mass are determined.The area of the general mass center of the complex with all possible positions of the manipulator and different mass of the object being manipulated on the basis of the Monte Carlo methods adapted to the solution of the static problem of the terrestrial robotic complex with a lever- type manipulator is established. In this case, the bearing system deformability of the chassis and the features of the position of the complex being located on an inclined plane are considered.

Practical value. The established conditions of the robotic complex static stability are the basis of the choice of its geometric parameters for providing maximum working capacity in different operating conditions.

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