Simulation study on the exit velocity control scheme of coaxial coil electromagnetic launchers

DOI:	10.11809/bqzbgcxb2023.08.015
Keywords:	coaxial coil launcher; asynchronous mode; synchronous mode; joint speed regulation; two dimensional simulation model; speed compensation control
Abstract:	In order to cope with the situation where the armature exit speed needs to be adjusted flexibly and precisely, this paper proposes a joint speed regulation scheme which uses an asynchronous coil launcher as the main acceleration device and a synchronous coil launcher as the governor at the tail for speed control. A two dimensional simulation model of placing the governor at the exit of the single segment asynchronous coil launcher is established in ANSYS. The distance between the coil of the last turn of the asynchronous launcher and the coil of the synchronous governor as well as the length of the coil of the governor are respectively simulated and analyzed for the physical design. The model is used to verify that changing the initial voltage of the pulse power supply can control the speed range of the governor, and changing the trigger time of the switch can control the governor to achieve the required armature speed compensation. The design scheme of the control loop is further given, which lays a theoretical foundation for the application of tail armature speed control in electromagnetic coil propulsion.
Published:	2023-08-28
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