In order to study the influence of key structural parameters on the efficiency of augmented high pulse current linear drive device, based on COMSOL and MATLAB, the variation tendency of drive efficiency with the number of rails, the distance between metal shell and rail, the rail distance, the length of rail, the height of rail and the width of rail is analyzed by parameter scanning, and the genetic algorithm is used to solve optimal efficiency of the drive device. In general, the efficiency tends to present a unimodal distribution when the rail cross-section parameters vary. Based on the research method and conclusion, it has a positive guiding significance for the design of drive structure parameters for different launch requirements.

High pulse current; linear drive; parameter calculation; structure optimization; efficiency.