SYSTEM AND METHOD FOR DETECTING LATERAL DEVIATION OF PERMANENT MAGNET SUSPENSION

摘要

Disclosed is a system for detecting lateral deviation of permanent magnet suspension. The system comprises a bogie (3) arranged above a permanent magnet rail (7) and used for bearing a load to realize operation or steering; a permanent magnet array (4) fixed on a lower surface of the bogie (3) and arranged opposite a magnetic pole on the permanent magnet rail (7), wherein a magnetic pole at a lower part of the permanent magnet array (4) is the same as the magnetic pole at an upper part of the permanent magnet rail (7), so as to interact with a magnetic field of the permanent magnet rail (7) to provide upward thrust for the bogie (3) so as to maintain the bogie (3) in a suspended state without direct contact relative to the permanent magnet rail (7); an insulating support (5) arranged on a lower side of the bogie (3) and arranged opposite the magnetic pole on the permanent magnet rail (7); and a coil (6) wound on the insulating support (5) in the same direction, wherein under the action of the magnetic field between the permanent magnet array (4) and the permanent magnet rail (7), the coil (6) generates electromagnetic induction and produces an induced current; the coil (6) is further connected in series to an amplifier (1) and a current detection unit (2) to form a detection circuit, and after the induced current is amplified by the amplifier (1), the current detection unit (2) detects the magnitude and/or direction of the induced current; the magnetic flux in the coil (6) is maintained within a first magnetic flux range in the state where there is no lateral deviation between the bogie (3) and the permanent magnet rail (7), and the induced current detected in the detection circuit is correspondingly maintained within a first current range; the magnetic flux in the coil (6) exceeds the first magnetic flux range in the state where lateral deviation occurs between the bogie (3) and the permanent magnet rail (7), and correspondingly, the induced current detected in the detection circuit exceeds the first current range; and the detection system detects, according to the magnitude and/or direction of the induced current, whether lateral deviation occurs and/or the direction of the lateral deviation and/or the displacement of the lateral deviation. Disclosed is a method for detecting lateral deviation of permanent magnet suspension.