Journal of Projectiles, Rockets, Missiles and Guidance >
Dynamic Characteristic Model Analysis of Ramjet Engine Based on the System Identification Method
Received date: 2016-07-20
Online published: 2025-05-28
The dynamic model of ramjet is fundamental for control system of ramjet. Furthermore, the accuracy of dynamic model directly impacts the viability of control scheme. In order to get control-oriented high accuracy dynamic model with low order, according to the test results, the transfer function model of the theoretical analysis, select the minimum error sum of squares as the system identification criterion, and to identify the model by using nonlinear least squares method, the transfer function model of fuel flow in fuel control system is generated. By combining this model with the engine air path model, the transfer function model of the engine thrust to the fuel flow is established. The time domain characteristic curve of the identification model is in good agreement with the test results, which can represent the main dynamic characteristics of the engine system.
LIANG Junlong , ZHANG Guitian , HU Baowen . Dynamic Characteristic Model Analysis of Ramjet Engine Based on the System Identification Method[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2017 , 37(3) : 147 -151 . DOI: 10.15892/j.cnki.djzdxb.2017.03.037
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