电容近炸引信探测电极的有限元分析

将有限元理论引入三电极电容引信探测电极的设计中,采用有限元方法计算出引信与目标之间的电容,从而为探测电路的设计和仿真提供依据. 突破了以往"设计--试制--修正"的设计方法,在设计阶段就能对系统电容进行精确计算及性能预测,可节省大量的设计试验费用. 对某迫弹电容引信用ANSYS有限元软件计算2 m下电容,并将计算数据进行电路仿真得出检波电压,其变化趋势与实测吻合.

FE Method of Analysing Detecting Electrode of Capacitance Proximity Fuze

The finite element method is first introduced into the design process of detecting electrodes of three electrode capacitance fuze, the mutual capacitance of the fuze and target is calculated by the finite element method, which provides the parameters for simulation circuit and design of detecting electrode. The finite element method pierces the traditional method of designing detecting electrode-design, test and adjustment. The system capacitance can be calculated accurately and the performance can be predicted in the design period of the detecting electrode, which saves a lot of research fee. The capacitances of a mortar shell fuze above ground 2 m and lower are given. After putting the computing data into simulating circuit, the demodulation voltage can be obtained, its changing trend is in agreement with the tested result.