电磁驱动式线圈发射器触发策略与实现

驱动线圈在电枢运动到最佳触发位置时的同步触发放电是多级感应线圈发射器研究过程中的难点.通过最佳触发位置特性分析，提出根据电枢初速得到最佳触发位置的触发策略，通过数值仿真得到电枢速度和驱动线圈最佳触发位置之间存在的函数关系，采用光电测速和软件延时相结合的控制策略，实现了任意速度下电枢的同步触发控制.设计了系统的光电测速电路、高压触发脉冲发生电路、控制电路和程序流程图，并通过试验验证了触发系统工作的可靠性和一致性.

Design and Test of the Trigger System for Multi-Stage Inductive Coil Launcher

Synchronizing trigger is a difficult problem which is eager to be solved during the research of multistage coil launcher. Based on the analysis of optimal trigger position characteristics, trigger strategy was proposed so that the optimal trigger position can be determined by initial velocity of armature. Relationship between armature velocity and optimal trigger position was obtained by simulation. Synchronization trigger was realized for the coil launcher at arbitrary armature velocity by the combination of real-time velocity measurement and time-delay program. The armature velocity measurement circuit is designed based on the photoelectric sensor, high voltage trigger pulse generating circuit, control circuit and the software flowchart. The reliability and compatibility of the system is verified by experimental results.