| Popis: |
The human body has many joints, and joint injuries frequently occur in various sports. To explore the biomechanical state of ligaments or muscles in human joints before and after damage, and to help doctors judge the damage and repair of joints, this article proposes a seven-degree-of-freedom platform based on three rotations spherical parallel mechanism for simulating human joint motion. Taking the knee joint as an example, this article simplified its model, and performed kinematics simulation by ADAMS to verify the feasibility of this mechanism. And based on the TRIO motion controller, we established the physical testing system. The correctness is finally verified by experiment in kind, which proves the feasibility of the joint motion simulation platform. And in terms of accuracy, it also performances very well. For example, when it needs to rotate 30∘ around the Y-axis, its actual rotation angle is 29.6∘, the error is less than 2%, and its translation error is also within 3%. |
