Analysis of the conditions of movement of mobile devices of magnetic type on a ferromagnetic working surface

Mobile devices of magnetic type are used in technical systems for inspection, diagnostics, cleaning and repair of ferromagnetic working surfaces of various functional purposes. When moving such devices, it is necessary to ensure the constant contact of their working elements with the surface, as well as the minimum adhesion force that affects the accuracy and time of movement on the surface on which the device is installed. The task of analyzing and determining the geometric conditions, the relationship between the forces of adhesion and gravity, which ensure the possibility of functioning of a mobile device of magnetic type on an inclined surface, is set. To solve this problem, physical and mathematical models are proposed. They describe the relationship between the geometric and power parameters of a mobile device. The nature of the dependence of the required force of the electromagnet on the angle of inclination of the ferromagnetic surface and the adhesion coefficient is established. It is shown that with an increase in the adhesion coefficient, the force developed by the electromagnet decreases non-linearly and tends to a certain limit. The electromagnet can be omitted when the mobile device is moving on a horizontal surface and the coefficient of adhesion is high.

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