Turbine engine assembly for measuring vibrations experienced by rotating blades

摘要

A turbine engine assembly includes a housing and a bladed wheel rotatable within the housing. The bladed wheel includes a blade including a head opposite the housing. The head includes a magnet and the housing includes first and second electrical conductors. Each electrical conductor generates, across terminals thereof, an electrical voltage induced by the magnet of the head opposite the housing and that represents vibrations of the head of the blade when the bladed wheel is rotated. The first electrical conductor includes a first central portion extending around the rotational axis of the bladed wheel and includes two mutually facing ends, and the second electrical conductor includes a second central portion passing through a space left by the first central portion between the two ends thereof. The arrangement of the electrical conductors makes it possible to obtain two voltages for determining an axial vibration speed at the tip.