克隆选择原理在LRE启动过程仿真中的应用  

Application of Clone Selection Mechanism in Simulation for Start-up Process of Liquid Rocket Engine

作　　者：杨永生 明安波[2] 杨正伟[2] 

机构地区：[1]陕西行政学院,西安710068 [2]第二炮兵工程学院,西安710025

出　　处：《弹箭与制导学报》2010年第4期126-130,共5页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：针对液体火箭发动（LRE）启动过程中推力变化大、仿真精度低的问题，用部分试车数据建立仿真模型．分析建模数据的变化特征．构造出非线性搜索函数；并用未建模的试车数据对模型进行验证。结果表明：克隆选择原理建模方法仿真精度高，不需要训练；与BP算法相比，总误差更小，而且对于启动过程中推力变化较大的采样点，仿真精度也有较大的提高。For the problem of low accuracy simulation caused by quickly and quantitatively alterative force in start-up process of liq- uid rocket engine （LRE）, the clone selection mechanism of artificial immune system was introduced. Constructing the simulation model with parts of the test data and analyzing the characters of the data, a non-linear searching function was established firstly. Then the model was validated with the test data that were not used in model constructing and parameters were optimized. The results show that the model of clone selection mechanism is a high precision and does not need training simulation model, Compared with BP algorithm, the precision of clone selection mechanism model is improved in the period of biggish force alteration during the start-up process and the total error is lower.

关 键 词：液体火箭发动机 克隆选择算法 启动过程仿真 参数优化 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]