电容驱动型多级感应线圈炮模型简化  

Simplification of capacitance driven multistage coilgun model

作　　者：郭灯华[1] 史铎林 关晓存[1] 管少华[1] 吴彪 GUO Deng-hua;SHI Duo-lin;GUAN Xiao-cun;GUAN Shao-hua;WU Biao(National Key Laboratory of Science and Technology on Vessel Integrated Power System,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,湖北武汉430033

出　　处：《电机与控制学报》2022年第5期8-16,共9页Electric Machines and Control

基　　金：国家自然科学基金(51777212)。

摘　　要：针对电容驱动型线圈炮以电流丝法为基础的建模中,由于感应线圈炮驱动回路放电过程存在非线性和受力复杂导致的模型精度差、计算效率低等问题,采用等效电阻和开关函数代替晶闸管开通关断的方法,在实现对过程特性准确模拟的基础上,有效避免晶闸管开关的非线性工作状态对数学模型建立过程产生的影响。将基于有限元获取的电流丝法中电枢与驱动线圈的互感矩阵导入感应线圈炮的数学模型中,结合查表法,简化了受力计算,提高了计算效率,实现了场路模型的有效结合。研究电枢运动时的受力特点,使用位置与速度的最优触发策略。建立发射数学模型与有限元模型进行比较,并进行实验。仿真与实验结果比较相差7%,在实验可接受的误差范围内,验证了该模型的正确性。Aiming at the problems of poor model accuracy and low calculation efficiency caused by nonlinearity and complex stress in the discharge process of capacitance driven multistage coilgun model based on current wire method,the method of equivalent resistance and switching function instead of thyristor switching on and off was adopted.On the basis of realizing accurate simulation of process characteristics,the influence of nonlinear working state of thyristors on the establishment of mathematical model was effectively avoided.The mutual inductance matrix of armature and driving coil in current wire method obtained based on finite element was introduced into the road model of induction coilgun,and the force calculation was simplified by using the look-up table method,the calculation efficiency was improved,the effective combination of field and road models was realized.The force characteristics of armature movement was studied,and the optimal trigger strategy of position and speed was used.The launch mathematical model was established and compared with the finite element model,and the experiment was carried out.The difference between simulation results and experimental results is 7%,and within the acceptable error range of the experiment,correctness of the model is verified.

关 键 词：感应线圈炮 发射模型 电流丝法 等效电阻 电感梯度 触发策略 

分 类 号：TM153[电气工程—电工理论与新技术]