The main content of this paper is to analyze and study the electromagnetic attraction generation mechanism, structural form, numerical calculation of electromagnetic attraction and parameter optimization design of the solenoid type stepping proportional electromagnet magnetic field. In order to make the armature perform long-stroke reciprocating linear motion, a solenoid type electromagnet without a stopper is used in the structure, so that the electromagnetic attraction is mainly generated by the leakage flux. From the Maxwell electromagnetic force formula, it can be inferred that the magnitude and direction of the force can obtain a relatively large electromagnetic attraction. In addition, this paper also conducts orthogonal optimization tests on other factors affecting the electromagnetic attraction: yoke radius, armature radius, slot size and shape, etc., to clarify the degree of influence of each factor on the electromagnetic attraction, and further uses the Tabu search method to globally optimize each factor, and obtain the optimal combination of each parameter. After factory practice verification, the result is ideal. This paper also calculates and analyzes the dynamic characteristics of the electromagnet, that is, the relationship between the electromagnetic attraction, movement speed, displacement and movement time during the entire stepping movement process, so that the factory can better control the power-on time and movement process of the electromagnet.
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