Reduce Positioning Error for Robot Manipulator with Intelligent Technique

Author:

Barati Maryam1,Khoogar Ahmad Reza2,Nasiriyan Mehrzad3

Affiliation:

1. Ferdowsi University and Space Scientific Research Institute

2. Islamic Azad University

3. Khaje Nasiredin Toosi University and Space Scientific Research Institute

Abstract

Using robot manipulators for high accuracy applications require precise value of the kinematics parameters. Since measurement of kinematics parameters are usually corrupted with errors and their accurate measurements are usually expensive, automatic calibration of robot link parameters makes the determination of kinematic parameters much simpler. In this paper a simple and easy to use algorithm is introduced for correction and calibration of robot kinematics parameters. Actually, at several end-effecter positions, the corresponding joint variables are measured simultaneously. This information is then used in three different algorithms; the Least Square (LS), the Particle Swarm Optimization (PSO) and the Genetic algorithms (GA) for automatic calibration and correction of the kinematics parameters. This process was also tested experimentally using a three degree of freedom manipulator which was actually built as a coordinate measuring machine (CMM). The experimental Results show that the intelligent algorithms provide better results for both parameter identification and calibration of the link parameters.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference23 articles.

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2. R.J. Horning, a comparison of identification techniques for robot calibration. Thesis Master of Science, case Western Reserve University, (1998).

3. X.L. Zhong, J.M. Lewis, A New Method for Autonomous Robot Calibration,. IEEE Int. Conf. on Robotic and Automation. (1995).

4. J. Kennedy, R. Eberhart and Y. Shi, Swarm Intelligence, Morgan Kaufman Publishers, USA, (2001).

5. M. Abderrahim, A. Khamis, S. Garrido, L. Moreno, Accuracy and Calibration Issues of Industrial Manipulators, Industrial Robotics: Programming, Simulation and Application, Edited by: Low Kin Huat. Germany, (2006).

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