Sequential Orthogonal Optimization Design Method of High-Speed Electromagnetic Induction Coilgun Based on Armature Updating

Abstract

The launch performance of an electromagnetic induction coilgun is influenced by the structural parameters of the coils and the armature, as well as the timing of the trigger parameter. These parameters are interdependent, making optimization design challenging. To address these issues, this article proposes a sequential orthogonal optimization design method for high-speed electromagnetic induction coilgun based on armature updating, which uses the trigger strategy of the sequential advance of position and determines optimization indices and their weight by analytic hierarchy process (AHP), including peak velocity, maximum launch efficiency, and waveform stability. By updating the armature sequentially, an orthogonal table for five structural parameters and one trigger parameter is optimized. By setting constraints on armature length, coil turns, and power supply voltage, the optimization design of a 10-stage high-speed induction electromagnetic coilgun is realized. The results show that after optimization, with constant total energy storage and the number of stages, the peak speed increased from 501.03 to 832.60 m/s, and the maximum launch efficiency improved from 13.24% to 25.56%.