The Experiment Study On Human Gait Model

Walk is the most repetitive and complex integral movement in human daily life, its manner and style are called as gait. Generally speaking, one man's gait is a surface representation of self structure and function, motion regulation system, individual behavior and mental activity during walking. The study of the human gait feature during human walking has important science significance not only in understanding human motion law and discovering coordination decision among limbs, but also in the fields of clinical treatment, rehabilitation treatment, man-machine engineering, sports science, bionic mechanism hominine robot and so on. Therefore, the world attaches importance to these fields. The paper is sponsored by National Natural Science Foundation "Research on several critical techniques about lower limbs rehabilitative robot." The research method, process and conclusion about human gait model were demonstrated and analyzed in detail. On the basis of analysis on the human gait motion measurement methods at home and abroad, a new measurement method is proposed, which could detect 4 DOF spatial motion of pelvis. The comprehensive gait experiment platform is developed, which could measure simultaneously the 4 DOF spatial motion of pelvis, hip, knee, ankle joint angular rotation and gait time-phase.Gait experimental research taking the health young man as subject is carried out, Gait time phase, 4 DOF spatial motion of pelvis and hip, knee, ankle joint angular rotation are described by graphic method. Each of the gait motion features are analyzed and concluded.Based on the experiment data and responding curves, sin function is proposed to descript the pelvis motion in X and Y direction, extended exponential function to descript the pelvis motion in Z direction; extended sigmoid function to descript the pelvis tilt angle around the vertical. Segment function in consist of function and extend is used to descript the sigmoid function to knee joint motion. Compound segment function is used to descript the ankle joint rotation. The feasibility study was clarified by the residual analysis.Correlation analysis is carried out on the relationship between amplitude variable, phase variable of gait mode and subjects' height, walking speed. Regression analysis is carried out on distinctive characteristic variable, further more, extended the above gait model. According to the relativity between the gait motion feature and the height and walking speed. To check the correlation analyses, the experimental tests are carried out in turn, the results proved the practicality of the gait model and its extended model.