Calibration of a 3D working space by multilateration

Martin Camboulives (1, 2) , Claire Lartigue (1) , Pierre Bourdet (1) , José Salgado (2)

1 LURPA - Laboratoire Universitaire de Recherche en Production Automatisée
2 LCM - Laboratoire commun de métrologie LNE-CNAM

This paper deals with a calibration procedure of a 3D working space based on multilateration using a unique tracking interferometer. The key point of the procedure , detailed for a Cartesian CMM, is the definition of a reference measuring system built from the successive locations of a single tracer independently of the machine kinematics. Procedure limits are thus highlighted and can be classified into three types : limits of the devices (interferometer and measuring rule performances), limits linked to the use of a single tracer (reflector reorientation for visibility purposes), and limits linked to the algorithm. To evaluate associated uncertainties, a virtual measurement module has been developed which simulates a realistic 3D calibration and allows the study of the influence of each uncertainty component on the calibration procedure. The approach applied to the calibration of a virtual CMM proves that the simulation module is an efficient tool to investigate uncertainties associated with calibration procedures based on multilateration using a single tracer.

Mots clés: Multilateration; CMM calibration; Tracer interferometer; Uncertainties; Volumetric errors

Domaines: Génie mécanique [physics.class-ph]

Martin Camboulives, Claire Lartigue, Pierre Bourdet, José Salgado. Calibration of a 3D working space by multilateration. Precision Engineering, 2015, ⟨10.1016/j.precisioneng.2015.11.005⟩. ⟨hal-01256972⟩