Abstract
The purpose of this paper is to deeply study the actual contact state of sealed relay contact surface, restore the contact spots of contact pair, and make up for the deficiency of establishing contact model of contact pair only by theoretical simulation. In this paper, the electrical contact high‐speed camera system is selected to record the kinematic parameters during the pull‐in process of the contact, and the deflection angle and deformation amount when the contact is complete are calculated. The surface height of the contact surface is collected through the non‐contact morphology scanner, and the actual contact morphology is corrected and restored. Finally, the actual contact spots are analyzed by reconstructing the contact difference‐plane. The method studied in this paper can provide a reference for the further study of contact analysis. Establishing the actual contact state of the contact pair of the micro level has a certain guiding role in the establishment of the contact resistance model. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.
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