1. Mechatronics and Robotics Engineering Department, Egypt-Japan University of Science and Technology (E-JUST), Borg Elarab, Alexandria, Egypt
2. Department of Intermedia Art and Science, Waseda University, Tokyo, Japan
3. Electronics and Communications Engineering Department, Cairo University, Giza, Egypt
4. On leave from Mechanical Engineering Department, Assiut University, Assiut, Egypt