Doan Ngoc Chi Nam received the B.S. degree majored in Mechatronics from the Department of Mechanical Engineering, University of Technology, Ho Chi Minh city, Viet Nam, in 2008. He is currently a PhD. Candidate under an integrated program at Graduate School of Mechanical and Automotive Engineering, University of Ulsan, Ulsan, Korea. His research interests are: smart materials/actuators, robotics, fluid power control, nonlinear control, and energy harvesting system.