Theoretical and Experimental Study on Magnetic Field Characteristics of Electromagnetic Buffer Under Intensive Impact Load

Abstract

Electromagnetic buffer is a braking device, which is widely used in braking systems in various fields. To study the magnetic field characteristics of permanent magnet cylindrical electromagnetic buffer under intensive impact load, an equivalent subdomain model combining the equivalent magnetic circuit method and the subdomain method is proposed. Then, the time-varying finite element model of the electromagnetic buffer is established, which simulated the working process of the electromagnetic buffer. Finally, a measurement system based on small prototype is designed and built. The experiment under intensive-impact load was carried out, and the dynamic magnetic field was measured. Through comparison and verification, the analytical model proposed in this article can accurately describe the static magnetic field distribution of the electromagnetic buffer. The finite element model established in this article can accurately simulate the working process of electromagnetic buffer.