Non-contact linear position sensor for motion control applications with inductive attenuating coupler

摘要

A non-contact linear position center has juxtaposed transmit and receive sections with a coupler or slider section interposed therebetween carrying a symmetrical attenuating conductive pattern. The inductive coupling of coils on the transmitter and receive sections is attenuated in accordance with the linear position of the pattern on the coupler. A unique sinusoidal signal is generated whose phase is indicative of the linear position of the coupler.