Abstract
This study is dedicated to explore dynamic characteristic of double-body system at free falling. To imitate cat’s landing process, design a landing mechanism and posture control theorem. In order to provide the motion of animal’s backbone, we emphasize designing active joint to realize landing posture control mechanism. In this study, a complete dynamic model of double-body system, analyzing degree of motion and Euler-coordinate, combining homogenous transformation matrix and energy method to establish function of dynamic. Using ADAMS to build system’s model then simulation dynamic performance. In experiment scheme, we try to design an active joint to provide two degree of torque and controller design. Finally this mechanism would application in anti-drop of electric product.