Ultra-fast Characterization of Detection Electrode Errors under Whole-angle Mode in 10 Seconds

This paper describes the ultrafast characterization method of detection electrode errors under the whole-angle mode. The angle estimation errors, as a direct effect of detection electrode error, are investigated through experiments and theoretical analysis under different detection gain and angle errors. Besides, the consistency of experimental and simulation results proves that the sin and cos components of angle estimation error can be used to characterize detection gain and angle errors respectively. The ultrafast characterization method is proposed based on the analysis of angle estimation error to obtain the compensation parameters of detection electrode errors. After the compensation of detection electrode errors, the angle estimation error has decreased about 200 times to the noise level.