A Method of Obtaining Micro Newton Calibration Force

Abstract

In order to obtain high-precision micro Newton electromagnetic calibration force, a micro Newton electromagnetic force generator is designed and implemented in this paper. Based on the principle of electromagnetic force generation, the sensitivity of each control variable to the influence of electromagnetic force is analyzed. Two parameters of electromagnet and the main control quantity of electromagnetic force are determined. An electromagnetic calibration device based on electronic balance is designed, which can adjust the current and air gap thickness at the same time. The experiment results show that the device can produce 100 ~ 2000 μN, The maximum resolution is 8 μN. The design result has a certain practical value.