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Journal : International Journal of Electrical and Computer Engineering

Implementation and design of new low-cost foot pressure sensor module using piezoelectric sensor in T-FLoW humanoid robot R. Dimas Pristovani; Dewanto Sanggar; Pramadihanto Dadet
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 1: February 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1531.541 KB) | DOI: 10.11591/ijece.v9i1.pp203-214

Abstract

Basically, human can sense the active body force trough the soles of their feet and can feel the position vector of zero moment point (ZMP) based on the center of pressure (CoP) from active body force. This behavior is adapted by T-FLoW humanoid robot using unique sensor which is piezoelectric sensor. Piezoelectric sensor has a characteristic which is non-continuous reading (record a data only a moment). Because of it, this sensor cannot be used to stream data such as flex sensor, loadcell sensor, and torque sensor like previous research. Therefore, the piezoelectric sensor still can be used to measure the position vector of ZMP. The idea is using this sensor in a special condition which is during landing condition. By utilizing 6 unit of piezoelectric sensor with a certain placement, the position vector of ZMP (X-Y-axis) and pressure value in Z-axis from action body force can be found. The force resultant method is used to find the position vector of ZMP from each piezoelectric sensor. Based on those final conclusions in each experiment, the implementation of foot pressure sensor modul using piezoelectric sensor has a good result (94%) as shown in final conclusions in each experiment. The advantages of this new foot pressure sensor modul is low-cost design and similar result with another sensor. The disadvantages of this sensor are because of the main characteristic of piezoelectric sensor (non-continuous read) sometimes the calculation has outlayer data.
Kinematics modeling of six degrees of freedom humanoid robot arm using improved damped least squares for visual grasping Muhammad Ramadhan Hadi Setyawan; Raden Sanggar Dewanto; Bayu Sandi Marta; Eko Henfri Binugroho; Dadet Pramadihanto
International Journal of Electrical and Computer Engineering (IJECE) Vol 13, No 1: February 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v13i1.pp288-298

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.
Co-Authors Abrari, Arya Rafi Achmad Basuki Achmad Basuki Adi Sucipto, Adi Adnan Rachmat Anom Besari Adytia Darmawan Afifah, Izza Nur AL BANNA, M. RIZQI HASAN Aldi Bayu Kreshnanda Ismail Alfan Rizaldy Pratama Alfan Rizaldy Pratama Pratama Ali Ridho Barakbah Amang Sudarsono, Amang Andri Permana W. ANUGERAH WIBISANA Apriandy, Kevin APRIANDY, KEVIN ILHAM Arif Hidayah Arif Hidayah Arini, Nu Rhahida Arna Fariza Bambang Sumantri Besari, Adnan Rachmat Anom Bima Sena Bayu Dewantara Darmawan, Adytia Dewanto Sanggar Dewanto, Raden Sanggar Dewanto, Raden Sanggar Dewanto, Sanggar Dewi Mutiara Sari Djoko Purwanto Edi Wahyu Widodo Eko Henfri Binugroho Eko Henfri Binugroho Eko Purbo Wahyono Endah Suryawati Ningrum Febby Ronaldo Hamida, Silfiana Nur Hary Oktavianto Huda, Achmad Thorikul Idris Winarno Ihsan Fikri Abdurahman Muharram Irene Erlyn Wina Rachmawan Ismail, Aldi Bayu Kreshnanda iwan Syarif Kevin Apriandy Luky Yanto M. Choirur Roziqin M. Unggul Pamenang Marta, Bayu Sandi Maulana, Himmawan Sabda Mentari Putri Jati Miyara, Akio MOCHAMAD ARI BAGUS NUGROHO Muhammad Ramadhan Hadi Setyawan Muharram, Ihsan Fikri Abdurahman Neny Kurniati Nurul Fahmi Nurul Fahmi Pamenang, M. Unggul R Sanggar Dewanto R. Dimas Pristovani R. Sanggar Dewanto Rachmawati, Oktavia Citra Resmi Raden Sanggar Dewanto Raden Sanggar Dewanto Riyanto Sigit Roziqin, M. Choirur Rudi Kurniawan Rully Sulaiman Rusli, Muhammad Rizani Ryan Satria Wijaya Samsul Huda Samsul Huda Sanggar Dewanto Sari, Dewi Mutiara Sesulihatien, Wahjoe Tjatur Setiawardhana Setiawardhana Setiawardhana, Setiawardhana Sigit Riyanto Sritrusta Sukaridhoto Subhan Khalilullah, Achmad Sukma Meganova Effendi Susanti, Puspasari Syadza Atika Rahmah Syahputra, Dimas Novian Aditia Teguh Hady Ariwibowo Tessy Badriyah, Tessy Tri Harsono ULURRASYADI, FAIZ W., Andri Permana Wahjoe Tjatur Sesulihatien Widodo, Edi Wahyu Wina Rachmawan, Irene Erlyn Wulandari Puspita Sari Wulandari Puspita Sari Yanto, Luky Zainal Arief