Papers by Keyword: Elbow Joint

Abstract: Elbow joint is one of the body's important joints, most of the activities of the human body are inseparable from the elbow joint, and including taking and holding movements.In order to increase the workspace of elbow joint, a novel elbow joint rehabilitation parallel robot based on 2-DOF orthogonal spherical parallel mechanism is proposed. First, the position inverse solution equation of elbow joint is established. Further, the workspace of elbow joint is analyzed. The optimal structural parameters are obtained by use of the objective function of optimization method. Finally, the virtual prototype of elbow joint rehabilitation parallel robot is designed using optimal structural dimensions parameters.

Abstract: The muscle of the body’s joint always appears in the form of a pair of antagonistic muscles. Based on the establishment of the humanoid elbow joint’s mathematical model and focused on the force distribution of the antagonistic muscles, a force distribution system consisted of a fuzzy controller and a force distribution planner is proposed. The fuzzy controller is used to ensure the control performance of the whole system and the force distribution planner to implement the force distribution of the flexor and extensor. The simulation show that in the case of confirming the good control performance, the system can get different force distribution results through regulating the algorithm and parameters of the force distribution planner. Among these,we can find a more suitable and energy-efficient way to distribute the force.

Abstract: After a series of impactful predigestion,the paper established one elbow joint dynamic model in the sgittal plane when the humerus was not fixed. According to the results of the example, two conclusions were drawed: firstly, the joint reaction engendered when the humerus movable were far less than the situation of fixing;secondly, we suggested ,when upright position bend elbow strength training was making , desirable buckling shoulder angle position is at 10⁰~20⁰ .

Abstract: In this paper, the structure similar to the connection of two connecting rods of human elbow joints is proposed to construct coordinates of connecting rods and the transformation matrix of pose. Lagrange’s equation is used to build dynamic equations including the feature of dynamic equations of musculotendon. Simulation results show that the proposed model is effective and reasonable.