Study on the Gait Motion Model of Human Lower Limb Joint

Accurately simulating the biomechanical parameters of human lower extremity movement is very important to analyze the biomechanical characteristics of human lower limbs. In this paper, the joints of the lower limbs of the human body are simplified to a seven-rigid body model in the sagittal plane, and the kinematics of the lower limbs of the human body and the dynamic model of the supporting period are established by the D-H method and the Lagrange method. In order to verify the above model, this paper builds a simulation model of human rigid body based on SimMechanics. Finally, comparing the experimental data of FAB measurement with the simulation data, it is found that the kinematics and dynamics models used in this paper are accurate enough to complete the measurement of the mechanical properties of the human lower limbs.