ANOTHER APPROACH ANALYZING THE CROSSTALK MATRIX FOR A PRECISE FORCE-TORQUE TRANSDUCER

Koji Ogushi, Sebastian Baumgarten, Dirk Röske

Abstract

A new multi-component facility for force and torque, which can simultaneously realize precise axial force (<i>F</i>_z) and torsional moment (torque, <i>M</i>_z), is being developed in PTB. Moreover, precise two-axis measuring devices (force-torque transducers) as transfer standards must be also developed for the establishment of the measurement traceability of screw testing machines. Authors have calibrated a new-developed force-torque transducer in each direction of force and torque, separately. The crosstalk matrixes have been obtained by ordinal way, where the normal square-inverse matrix (2 by 2) was used. In this paper, authors tried to obtain the crosstalk matrix by means of another approach, pseudo-inverse matrix, where the data was used as many as possible (2 by 18 or 2 by 26), and the useful crosstalk matrix could be determined in one value.

Keywords

multi-component measurement, force, torque, screw testing machine, pseudo-inverse matrix

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IMEKO-WC-2015-TC3-068.pdf

DOI

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IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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