Development a model of robot movement with five degrees of freedom for a warehouse

Authors

DOI:

https://doi.org/10.15587/2706-5448.2021.240261

Keywords:

robot control algorithm, degrees of freedom, orthonormal coordinate system, Denavit-Hartenberg transformations

Abstract

The object of research is a mathematical model describing the movement of a robot with five degrees of freedom for a warehouse. The work was aimed at analyzing the kinematic structure of the manipulator, on the basis of which the base and local coordinate systems were selected, as well as further formalized recording of the kinematic equations in matrix form. It is noted that one of the most problematic places is that the algorithms for controlling the robot most often contain local rules for the interaction of robots between themselves and the external environment, and emergent behavior is manifested as a result of the application of these rules, which does not have a formal description. Therefore, it is important to modernize the models describing the motion of a robot with five degrees of freedom for a warehouse. Using the matrix method, the sequence of constructing coordinate systems is described and its mathematical description is given, which will make it possible to eliminate this drawback in the future. The computer implementation of the developed algorithms was carried out using methods for processing matrix data structures. The principle of constructing a kinematic model of a robot is presented, with the help of which the main coordinate transformation matrices are obtained for robot with five degrees of freedom, and the possibility of taking into account the size of the gaps in the joints is shown. The resulting model is obtained, which is proposed for use in building control algorithms for a robot with an automatic gap selection, as well as in robot calibration. This is due to the fact that the proposed model has a number of features, in particular, the basic coordinate system and the coordinate system of each link of robot with five degrees of freedom are taken into account. This makes it possible to obtain the values of the indicators for the projection of the robot position vector in the initial state, in the rotation of the fourth link at a well-defined angle and in the case of a vertically straightened manipulator. Compared to similar known studies, this provides advantages such as minimizing errors in position, speed and motion accuracy.

Author Biographies

Volodymyr Shvets, National Technical University «Dnipro Polytechnic»

Postgraduate Student

Department of Cyberphysical and Information-Measuring Systems

Viktor Tkachov, National Technical University «Dnipro Polytechnic»

Doctor of Technical Sciences, Professor, Head of Department

Department of Cyberphysical and Information-Measuring Systems

References

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Published

2021-10-08

How to Cite

Shvets, V., & Tkachov, V. (2021). Development a model of robot movement with five degrees of freedom for a warehouse. Technology Audit and Production Reserves, 5(1(61), 12–17. https://doi.org/10.15587/2706-5448.2021.240261

Issue

Vol. 5 No. 1(61) (2021): Industrial and technology systems

Section

Mechanical Engineering Technology: Reports on Research Projects

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Copyright (c) 2021 Volodymyr Shvets, Viktor Tkachov

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