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For inductive coil launchers, adopting a split structure between the solid armature and the load can effectively reduce unnecessary loads and improve launch efficiency. The motion state of the solid armature limits its application scenarios. This paper employs finite element simulation to study the characteristics of the armature's response to changes in reverse force. It provides a reference for effectively utilizing the characteristics of the armature's response to reverse force and acceleration to achieve control strategies for the armature's motion state. The research results show that the number of drive coil turns and the initial velocity of the armature will affect the moment when the armature's induced current reverses direction. During the launch process, the direction of the electromagnetic force experienced by the armature changes several times, causing the armature's motion speed to oscillate gradually until it reaches a stable speed.

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Study on the Variation Characteristics of Reverse Force Acting on the Armature of Induction Coil Launcher

  • 会议论文

  • 发表日期：

    2026年

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  • Qingzhao Liu,
  • Chenbing Guo,
  • Wanting Xi,
  • Yawei Wang,
  • Xuguang He

摘要

For inductive coil launchers, adopting a split structure between the solid armature and the load can effectively reduce unnecessary loads and improve launch efficiency. The motion state of the solid armature limits its application scenarios. This paper employs finite element simulation to study the characteristics of the armature's response to changes in reverse force. It provides a reference for effectively utilizing the characteristics of the armature's response to reverse force and acceleration to achieve control strategies for the armature's motion state. The research results show that the number of drive coil turns and the initial velocity of the armature will affect the moment when the armature's induced current reverses direction. During the launch process, the direction of the electromagnetic force experienced by the armature changes several times, causing the armature's motion speed to oscillate gradually until it reaches a stable speed.