Measurement Error Analysis of Torpedo Magnetic Moment

Based on the measuring method of torpedo radiant electrom agneticfield, an error model for measuring the magnetic moment is set up. The influence of there lative factors on measurement error is calculated with the model via Matlab, and hence the selection principle of measuring sensor size and measured distance is presented. The relations of magnetic moment measurement error with measuring distance, sensor length and diameter are analyzed. Under the given measuremen t conditions, the curves of measurement error versus the above factors are obtained, which are helpful to determine the proper sensor diameter and measuring position, and there fore to reduce the measurement error of magnetic moment effectively. This research is expec ted to be a reference for the design of parameter measuring device for torpedo electro magnetic field.