Identification of the Mechanical Impedance at the Human Finger Tip

摘要: Rapid transients were applied to the outstretched human index finger tip, which resulted in motion primarily at metacarpophalangeal (MCP) joint extension and abduction. A second-order linear model was fit approximately 20 milliseconds of force displacement data determine effective mechanical impedance tip. Ranges mass, damping, stiffness parameters estimated over a range mean tip (2-20 N for extension, 2-8 abduction). Effective translational mass each subject relatively constant levels greater than 6 throughout abduction trials. Stiffness increased linearly with muscle activation. The damping ratio trials about 1.7 times