Design And Implementation Of Biomechanical Simulation Of Astronaut's Muscle-skeletal System

With the development of aviation in our country,people pay more and more attention to the astronaut's physical state in the space environment,while exploring the space.Human muscle-skeletal system is not only the basis of the body movement,but also the interaction between human body and the outside world.Because of this,in this paper,a biomechanical simulation system of human muscle-skeletal system is established to analyze the mechanical process of movement.According to the analysis of the process,the system can be divided into three parts: The kinematic analysis system of the generation of human motion modeling,the dynamic analysis system of the calculation of the force and the moment of each part of the human body and the muscle mechanics analysis system of all human body muscle.The calculated results obtained by this method are compared with the popular motion analysis software in abroad.And the results of the two are highly consistent,which can be used to verify the correctness of the method.The kinematic analysis system combined human motion parameters,which can be obtained by human motion capture system,with anthropometric data Marker labeling method,to generate 3D motion model of human body.And by using physical analysis of the motion of the rigid body,we can get the motion parameters of each major part.In the same way,we can calculate the force of each joint by loading the acceptance data of the external force plate.Based on the linear modeling by obstacle-setting method,we add the regression optimization method to the modeling of human muscle.And by measuring the electromechanical signals of human body,two methods of static and dynamic are used to optimize the mechanical process of the human body muscles.Because of lacking a general method for the prediction of muscle force.In this paper,the accuracy of the method is verified by comparing the results of the mechanical and electrical signals measured with the use of a few specific muscles.It can be seen from the experimental results,the dynamic algorithm is more accurate than the static algorithm.The static algorithm is more efficiency and can reflect the trend of the changes in muscle strength to a certain extent.