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为了实现爆震波压力的软测量,依据碳氢焰离子形成原理及爆震波高速传播的特点,在分析爆震波离子形成机理的基础上,根据爆震波离子电流与压力信号的相似性,提出基于离子电流的爆震波压力非线性模型建模思路。采用RBF网络建立爆震波非线性模型,并给出网络结构、样本选取原则和预处理方法。开展了单次脉冲爆震试验,利用试验数据建立该压力非线性模型,并通过试验数据和模型输出的对比校核模型的有效性和准确性。
In order to realize the soft measurement of the detonation wave pressure, based on the formation principle of the hydrocarbon flame and the characteristics of the high speed propagation of the detonation wave, based on the analysis of the detonation wave ion formation mechanism and based on the similarity between the detonation wave ion current and the pressure signal, Current Nonlinear Model of Detonation Pressure Modeling. Nonlinear model of detonation wave was established by using RBF network, and the network structure, sample selection principle and pretreatment method were given. A single pulse detonation test was carried out. The pressure nonlinear model was established by using experimental data. The validity and accuracy of the model were verified by comparing the experimental data with the model output.