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The used of the programmable sensor about automotive electronic accelerator pedal, changing the position of the pedal which is converted to linear analog voltage output, having the advantages of good product consistency and long life span, is more and more widely used. The wrong position of pedal’s magnets position is easy to cause the abnormal sensor calibration and the output signal’s nonlinear problem, analyzing the pedal rotating permanent of magnet magnetic. And magnetic field finite element analysis was carried out by using ANSYS software modeling and simulation, analyzing the influencing factors between the pedal rotation angle and position sensor installed, which is verified in the electronic accelerator pedal’s testing system. The experimental results show that the dual type electronic accelerator pedal’s output linearity is 1.45%, synchronous index is 0.12%, which is conformed to the product technical standard.