Brief description of the contactless measurement of a relative displacement or a relative positioning of a first object with respect to a second object, by induction.

摘要

The present invention relates to a process for the contactless measurement of a relative displacement or a relative positioning of a first object with respect to a second object, such as mirrors segmented of a telescope giant, in which: - it is excited at least a sending coil, placed on the first object, by an alternating excitation signal, - it is detected at least an ac voltage va, generated by mutual inductance in at least one receiver coil is placed on said second object, said at least one receiver coil is placed in a magnetic field created by the said at least a sending coil, and - it determines the relative displacement of the first object with respect to the second object of the said at least one voltage generated on the said at least one receiver reel.