Biomechanical Pilot Properties Identification by Inverse Kinematics/inverse Dynamics Multibody Analysis

Pilot-vehicle interaction represents a critical aspect of aircraft design. In this work, experimental measurements of human body impedance, under realistic cockpit motion, are used to identify the direct transfer function between the motion of the seat and the controls inadvertently fed back into the rotorcraft, and the constitutive properties of the pilot's articulations. Only a reduced set of measurements is available, but the motion of the whole system can be reconstructed by means of inverse kinematics via kineto-static analysis in a multibody simulation framework, and the impedance of the articulations can be computed by direct parameter identification from the time histories of the reconstructed motion and the estimated forces. Preliminary applications to the aeroservoelastic simulation of rotorcraft are presented and discussed.