| 摘要 |
The invention relates to a magnetic field transducer with quadrature excitation, including: at least two coils with non-linear cores, which are substantially identical; and at least two alternating current generators for exciting said coils. According to the invention: the excitation currents in the two groups of coils are out-of-phase such that the groups of coils produce detection signals in antiphase in the arrangements in which the interference signals picked up by induction are in-phase, or produce in-phase detection signals in the arrangements in which the interference signals picked up by induction are in antiphase; and the detection signals output by the two groups of coils are added or subtracted in order to reject the interference signals induced by transformer effect in said coils. |
