Inverse Acceleration Solution for Robot Manipulators using Harmony Search Algorithm
الباحثونHazim Nasir Ghafil
المجلةInternational Journal of Computer Applications
مختصر البحثInverse acceleration problem is very difficult for a serial robot having less than 6 degree of freedom (DOFs), this difficulty is due to the complexity of the inverse Jacobian matrix. For the sake of this problem an approach to solve inverse acceleration of a robot was introduced in this paper, in which harmony search algorithm (HSA) was used to calculate the inverse problem without calculating inverse Jacobian matrix. It is proved that it is applicable by simulation inverse acceleration for a 3-DOF robot. ANSYS 15.0 was used as a simulation software package.
Vibration Analysis of a Generator Anti-Vibration
Rubber Mounts
الباحثونHazim Nasir Ghafil
المجلةJournal of Computer Science & Computational Mathematics
مختصر البحثThe aim of this study is to measure the vibration and the
stresses developed in the anti-vibration rubber mounts of a
generator resulted from vibration of a generator at duty cycle. This
is done by measuring the acceleration of the engine case using
accelerometer; piezoelectric sensor. The stresses were calculated
numerically by finite element analysis using ANSYS 15.0 software
package.
Cracks Measurement On The Basis Of Machine Vision
الباحثونحازم ناصر غافل، دعاء محمود بدر
المجلةInternational Journal of Video&Image Processing and Network Security IJVIPNS-IJENS
مختصر البحثIn this paper a method for measuring crack dimensions was introduced based on machine vision. this method was used because of the irregularity of the crack shape and difficulty of measuring crack dimensions by the traditional ways, A combination of operations were used to calculate surface crack length after filtering the binary image obtained from captured one, the key factor for best results is using the correct order of the operations on the image. This done by MATLAB image processing tool box. A proposed formula was introduced to improve the accuracy of the crack measurement. The accuracy of the measurement greatly depends on the resolution of the captured image and camera type. Many samples were measured and the results showed the error percentage in this method fluctuates between 0.3%-1.9%
A Virtual Reality Environment for 5-DOF Robot Manipulator based on XNA Framework
الباحثونحازم ناصر غافل، د. علي حسين محمد
د. نبيل حسن هادي
المجلةInternational Journal of Computer Applications
مختصر البحثThis work presents a complete solution for the Forward and Inverse Kinematics for a 5DOF robot manipulator and use XNA game studio as a simulator. The work include mathematical modeling of the robot Kinematics which it used in a 3D virtual environment. This text show that it can be use XNA GS as an excellent tool to simulate robots behavior.
Dynamic differential annealed optimization: New metaheuristic optimization algorithm for engineering applications
الباحثونHazim Nasir Ghafil، Károly Jármai
المجلةElsevier
التاريخ2020-08-01
مختصر البحثThis work proposes a novel optimization algorithm which can be used to solve a wide range of mathematical optimization problems where the global minimum or maximum is required. The new algorithm is based on random search and classical simulated annealing algorithm (it mimics the modern process of producing high-quality steel) and is designated dynamic differential annealed optimization (DDAO). The proposed algorithm was benchmarked for 51 test functions. The dynamic differential annealed optimization algorithm has been compared to a large number of highly cited optimization algorithms. Over numerical tests, DDAO has outperformed some of these algorithms in many cases and shown high performance. Constrained path planning and spring design problem were selected as a practical engineering optimization problem. DDAO converged to the global minimum of problems efficiently, and for spring design problem DDAO has found the best feasible solution than what is found by many algorithms.
Optimization for Robot Modelling with MATLAB
الباحثونHazim Nasir Ghafil، Károly Jármai
المجلةSpringer Nature
التاريخ2025-08-30
مختصر البحثThis book addresses optimization in robotics, in terms of both the configuration space and the metal structure of the robot arm itself; and discusses, describes and builds different types of heuristics and algorithms in MATLAB.