System and method of the contactless measurement of a dyeing or relative positioning of two adjacent objects by capacitive channel, and an application to the control of mirrors

摘要

System (s) of the contactless measurement of a relative displacement or a relative position of a first object with respect to a second object, comprising a sensor module (1) comprising a plate fixed to the first object of the transmitter and a receiving plate connected to the second object, disposed substantially facing each other and provided with electrodes respectively emitting and réceptrices.les emitting and receiving electrodes are arranged so as to constitute a first capacitance which varies as a function of the distance separating the transmitter and receiver and a second capacitance which varies as a function of the misalignment relative to said plaques.un electronic module (500) is designed to carry out a computation analog (i) of a first signal representative of the inverse of the first capacitance and (ii) a second signal representative of the ratio of the second capacitance on the first capacitance.utilisation in particular for the control of the segmented mirrors in large telescopes