DETECTOR OF LINEAR MOVEMENTS Russian patent published in 1997 - IPC

FIELD: automatic control system. SUBSTANCE: device has main and additional magnetic circuits each of which has three bases 1-3 and 16-18, which are joined by corresponding shared rod magnetic circuit 4 and 19, pair of rod magnetic circuits 5, 6 and 20, 21, and pair of shared rod magnetic circuits 7 and 8. In addition main and additional magnetic circuits have excitation winding 9 and 22, measuring windings 10, 11, and 23, 24 and mobile member which is designed as two short-circuited screens 14, 15 and 27, 28 which are connected in series opposing. Middle bases 3 and 18 of magnetic circuit are connected to each by their ends. Through holes of bases of magnetic circuits contain measuring windings which are connected to provide separate bridge circuits which are connected in series aiding. Windings 12, 13 and 25, 26 are located in opposite arms of bridges. When mobile screens 14 and 27 are moved simultaneously, balance of magnetic bridges is upset and signal which is proportional to algebraic sum of movement of screens is output. Zero level of this signal is achieved by movement of mobile screens 15 and 28 towards same direction and by same distance as screens 14 and 27. EFFECT: increased functional capabilities. 1 dwg