Error compensation method based on positive and negative sequence separation

The invention discloses an error compensation method based on positive and negative sequence separation, and relates to the field of error compensation of positive and negative sequence separation, and the error compensation method comprises the following two aspects: S1, AC error compensation, and S2, DC error compensation. A direct current error in a rotation angle calculation process is eliminated by using a minimum current method based on perturbation and observation, and the influence of non-ideal factors on Hall rotation angle calculation is thoroughly eliminated; hall voltage output by the linear Hall sensor is in direct proportion to magnetic induction intensity, weak magnetic signals are converted into analog quantity to be output, and a corresponding compensation structure is designed in a peripheral signal processing circuit of the linear Hall sensor, so that the linear Hall sensor has high detection precision; multiple times of arc tangent calculation can be avoided, and the position of the motor