Lower limb walking state under different road conditions verified with virtual reality technology
Wang Pei-pei
Yang Peng
Abstract： BACKGROUND:In the process of studying intel igent lower limbs prosthesis control er, the identification results of road conditions are usually abstract and not easy to understand no matter what measure is taken such as making use of electromyographic signal or combining kinematic with dynamic information.
<br> OBJECTIVE:To il ustrate the differences and similarities between different road conditions from the direct kinematics analysis, and to make models and simulate various road conditions by using virtual reality technology in order to make recognition results visualize.
<br> METHODS:The mechanical modeling modules Simmechanics under Simulink were used to build model diagram of human lower limbs and then we carried out kinematics analysis to the output. The differences and similarities of kinematic information were compared between different road conditions;various road conditions and scenes were built with the help of virtual reality toolbox, and drove the model by kinematics information to achieve validated simulation of different road conditions.
<br> RESULTS AND CONCLUSION:The results showed that it has a certain limitation to identify various road conditions by using intuitive kinematics analysis. More means and information should be used. Virtual reality toolbox could represent the corresponding movement scene wel which is belonging to corresponding data. Simulation results showed that virtual reality modeling method can reproduce the true image of walking conditions of lower limb walking in the plains, slopes and stairs, and make the movement state reflected with data no longer monotonous abstract. This method can make the identified results visualize and can be taken as a measure to validate the results of road conditions identification, which can provide a good validated display platform for the identification of intel igent prosthetics mode.
Keywords：bone and joint implantsbiomechanics of bone and jointhuman lower limbsvirtual realitykinematics analysisidentification of road conditionssimulationNational Natural Science Foundation of China
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 6293-6299 )