International Journal of Electrical and Computer Engineering
Vol 13, No 1: February 2023

Kinematics modeling of six degrees of freedom humanoid robot arm using improved damped least squares for visual grasping

Muhammad Ramadhan Hadi Setyawan (Politeknik Elektronika Negeri Surabaya)
Raden Sanggar Dewanto (Politeknik Elektronika Negeri Surabaya)
Bayu Sandi Marta (Politeknik Elektronika Negeri Surabaya)
Eko Henfri Binugroho (Politeknik Elektronika Negeri Surabaya)
Dadet Pramadihanto (Politeknik Elektronika Negeri Surabaya)



Article Info

Publish Date
01 Feb 2023

Abstract

The robotic arm has functioned as an arm in the humanoid robot and is generally used to perform grasping tasks. Accordingly, kinematics modeling both forward and inverse kinematics is required to calculate the end-effector position in the cartesian space before performing grasping activities. This research presents the kinematics modeling of six degrees of freedom (6-DOF) robotic arm of the T-FLoW humanoid robot for the grasping mechanism of visual grasping systems on the robot operating system (ROS) platform and CoppeliaSim. Kinematic singularity is a common problem in the inverse kinematics model of robots, but. However, other problems are mechanical limitations and computational time. The work uses the homogeneous transformation matrix (HTM) based on the Euler system of the robot for the forward kinematics and demonstrates the capability of an improved damped least squares (I-DLS) method for the inverse kinematics. The I-DLS method was obtained by improving the original DLS method with the joint limits and clamping techniques. The I-DLS performs better than the original DLS during the experiments yet increases the calculation iteration by 10.95%, with a maximum error position between the end-effector and target positions in path planning of 0.1 cm.

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Journal Info

Abbrev

IJECE

Publisher

Subject

Computer Science & IT Electrical & Electronics Engineering

Description

International Journal of Electrical and Computer Engineering (IJECE, ISSN: 2088-8708, a SCOPUS indexed Journal, SNIP: 1.001; SJR: 0.296; CiteScore: 0.99; SJR & CiteScore Q2 on both of the Electrical & Electronics Engineering, and Computer Science) is the official publication of the Institute of ...