A novel current sensor based on dual Hall chips

In this paper, a novel components model of dual-element combined with single air gap that produces a significant reduction in the sensor non-linearity and position errors is proposed. This design has improved anti-jamming capability and range of the sensor. A theoretical model for the current sensor output of the dual-element Hall voltage has also been established. In order to eliminate the ladder phenomenon in the frequency response of DC sensor, a dual-core current sensor program has also been proposed. Some factors that influences the magnetic properties of Hall current sensor has been evaluated using the finite element method (FEM). Theoretical analysis is consistent with experimental results, which indicates FEM is an effective tool for Hall current sensor design.