J Type Of Prosthesis Based On Magnetorheological Damper Damping Buffer Analysis

As the development of the society and science, artificial limbs for thedisable are more and more continuous and nimble. The solid, stable andcomfortable ones are the best choice. Among the research in the field, bionicartificial limb is one of the popular research orientation of anthropomorphicrobot and recovery artificial limb. These years the research of artificial limbs hassignificant improvement mostly thinking of the stiffness and the movementmatching. To promote the comfort and fastness of artificial limb, a new artificialleg with MR was proposed. And the dynamic model was established based oncomplex nonlinear relationship of the elastic stiffness and the damping. Throughthe model, the feasibility of new strategy was confirmed.Firstly, according to the knowledge of anatomy and biomechanics in sports,mechanism of vibration controlling of human lower limb joints was discussed.Furthermore the energy storing effect of foot structure while standing andmoving was analyzing. Based on above work, compressible inverted pendulummodel for artificial legs was developed.Then, damping performance of Magnetorheological Damper erected inartificial legs was analyzed based on the hydromechanics, and J structuredynamic model was obtained according to the theory of “CompliantMechanisms”.Ultimately, simulation model in Matlab/Simulink was established toanalyze the vibration control effect of J structure with MagnetorheologicalDamper and soft silicon rubber under four conditions(at low,medium and fastmoving speed; and at jumping condition). The simulation results show that theproposed strategy in this study can improve the stability and comfort of artificiallimbs. This study can supply reference for artificial limb design.