Mr. Shoujun Zhao received Master of Degree in Mechanical Engineering of Sichuan Union University (current Sichuan University), China, 1997. He has been working on the research and development of the aerospace actuators and their components to gimbal launcher engines, mostly flight-proven, and is a research director in Beijing Institute of Precision Mechatronics and Controls. His research experiences and interests reside in the system design, modelling, simulation, control algorithm, electro-hydraulic, electro-hydrostatic, and electro-mechanical actuators, servo-valves, pumps, electric motors, etc.