补偿脉冲发电机放电波形优化方法  

Pulse shaping method for compulsator

作　　者：陶雪峰 刘昆[2] Tao Xucfcng;Liu Kun(Department of Graduate Management,Space Engineering University,Beijing 101400,China;College of Aerospace Science and Engineering,National University of Defense Technogogy,Changsha 410073,China)

机构地区：[1]航天工程大学研究生院,北京101400 [2]国防科技大学空天科学学院,长沙410073

出　　处：《强激光与粒子束》2018年第9期66-70,共5页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：基于一台两相四极空心补偿脉冲发电机,研究了多相脉冲电机放电波形调节的最优化问题。对补偿脉冲发电机的三种典型负载:电磁轨道炮、脉冲激光器和电热化学炮的基本特性进行了阐述,针对这三种负载分别提出了相应的优化指标,分析了量化脉冲波形对负载的适用程度,并将波形优化问题转化为函数优化问题。在建立了脉冲电机放电数学模型的基础上,使用差分进化算法对优化问题进行求解,找到最优点火角组合。对电磁轨道炮,优化指标为弹丸加速度比。将加速度比的概念进行拓展,可得到适用于脉冲激光器的尖顶脉冲。对电热化学炮,提出了"形状方差"的概念,消除了电流幅值的影响,能够较好地衡量脉冲形状的适用性。仿真结果表明,提出的脉冲波形优化指标是有效的,在智能优化算法的帮助下,能够通过控制量的组合得到不同类型负载的最优波形。Based on a two phase four poles air core compulsator, the discharge pulse shape optimization problem is studied. The characteristics of three typical kinds of loads for compulsator： electromagnetic rail guns, flashlamps and electro thermal chemical guns are analyzed, whose requirements for pulse shape are significantly different. Optimization indexes are proposed for different loads to quantify the fitness of discharge pulse, transferring the pulse shaping problem into function optimization prob lem. For electromagnetic rail guns, the optimization index is the ＂acceleration ratio＂ of the projectile, which is the ratio of maxi mum acceleration and average acceleration during launch process. The larger acceleration ratio is, the flatter the waveform is. By expanding the concept of acceleration ratio, this index can be applied on flashlamps. For electro thermal chemical guns, the con cept of ＂shape variance＂ is proposed to measure the pulse shape. Simulation results show that the proposed optimization indexes are effective. With the help of intelligent optimization algorithm, we can get the optimized discharge pulse for different loads. Simultaneously, it is verified that the two phase compulsator has strong flexibility in waveform adjustment.

关 键 词：补偿脉冲发电机 脉冲波形调节 优化算法 负载特性 点火角 

分 类 号：TM301[电气工程—电机]