Acquisition of a 3D Motion Analysis System

University Of Missouri-Columbia, Columbia MO

Investigators

Abstract

Abstract 1 The overall objective of the proposal is to acquire a VICON 612 Motion Analysis System (MAS) and to 1) integrate it into existing research setups of the PIs, 2) strengthen new collaborative research among the PIs, 3) develop new measurement techniques, 4) integrate it into selected undergraduate and graduate courses in the two departments of the PIs, and 5) make the equipment available to other researchers at the University. A MAS uses high-resolution CMOS cameras to capture pictures of a dynamical system when visible red digital LED strobes light up tiny retro-reflective markers that are fixed on the system. Instantaneous three-dimensional coordinates of each retro-reflective marker that is seen by at least two cameras are automatically calculated using photogrammetry, and displacements, velocities, and accelerations of all makers are available for performing dynamic animation and further signal processing for dynamics characterization, damage detection, and control. Physically different from common point sensors (e.g., accelerometers and proximity sensors) and profile sensors (e.g, video recorders), the MAS offers simultaneous, non-contact, and accurate measurements of 3D coordinates of as many as 100 points on a mechanical system undergoing large motions. This work will solve critical experimental issues and develop advanced experimental techniques for the testing, design verification, damage detection, modeling, and rapid prototyping of HFSs and other mechanical and aerospace systems. This work will advance the knowledge of nonlinear statics, dynamics, control, and design of deployable/inflatable space structures and other mechanical systems. The system will dramatically enhance research-intensive learning environments for training engineering students in the areas of 1) vibration testing and analysis of mechanical and aerospace systems, 2) testing and characterization of deployable/inflatable space structures, 3) motion control of mechanical systems, 4) design of active structures, and 5) modeling of human movement. The potential impact of this work on the design of modern space, aerospace, mechanical, and civil systems is expected to be very significant and broad.