Human lift-up motion generation based on identification of time-variant performance index

This paper deals with the method to generate human whole body motion by identifying performance index to be optimized. Most of the human motion in daily life, including a "lift-up an object" motion, is complex and the performance index are regarded to vary during the motion. Lift-up an object motion is generated by solving inverse kinematics. The experimentally measured trajectory of the hand is given and the rest of the degree of freedom is determined by optimizing a performance index that blends several sub-functions. The coefficients for each sub-function are identified through the motion generation simulation.