以气压传动动力学和机构动力学为理论基础 ,建立氮气弹射系统动特性数字仿真模型 ,提出了基于导弹俯仰角和俯仰角速度的双目标优化函数 ,利用小波算法中的奇异性检测原理 ,求得系统优化中的最佳初始迭代点 ,再用混合罚函数法求得系统最优解 ,并用试验对优化设计结果进行了验证 Based on the theory of pneumatic transmission dynamics and mechanism dynamics, a numerical simulation model of dynamic characteristics of nitrogen ejection system was established. Based on the pitch angle and pitch angular velocity of missile, a bi-objective optimization function was proposed. Using the principle of singularity detection in wavelet algorithm, The optimal initial iteration point in system optimization, and then use the mixed penalty function method to obtain the optimal system solution, and test the results of the optimization design was verified