变循环发动机稳态控制规律设计的新方法

发布时间：2018-03-02 13:42

本文选题：逆算法　切入点：核心机驱动风扇　出处：《推进技术》2017年10期 　论文类型：期刊论文

【摘要】：变循环发动机(VCE)具有较多的可调参数,为了进行变循环发动机的多变量稳态控制规律优化设计,提出了用于变循环发动机稳态控制规律优化设计的一种新方法-逆算法。该方法基于敏感性系数矩阵,采用可调参数替换传统部件级性能计算模型中的独立变量,在给定变循环发动机主要状态参数和部件参数的条件下,实现了可调参数的求解,进一步完成发动机稳态控制规律的优化设计。对比表明,逆算法的计算精度和收敛速度与传统算法一致,收敛性得到了改善。对带有核心机驱动风扇(CDFS)的双外涵变循环发动机亚声速巡航的节流状态控制规律优化后,使得巡航推力下的安装耗油率比定几何的双外涵和单外涵发动机分别下降7.8%和16.4%,而地面安装耗油率最大降低约3.4%。结果表明,逆算法是变循环发动机稳态控制规律优化设计的一种有效途径。
[Abstract]:Variable cycle engine (VCE) has more adjustable parameters. In order to optimize the multivariable steady state control law of variable cycle engine, In this paper, an inverse algorithm for the optimization of steady state control law of variable cycle engine is proposed. Based on the sensitivity coefficient matrix, the independent variables in the traditional component level performance model are replaced by adjustable parameters. Under the condition that the main state parameters and component parameters of the variable cycle engine are given, the adjustable parameters are solved, and the optimization design of the steady state control law of the engine is further completed. The accuracy and convergence rate of the inverse algorithm are consistent with those of the traditional algorithm, and the convergence is improved. After the optimization of the throttle state control law of the dual external culvert variable cycle engine with the core drive fan CDFS, the throttle state control law of the dual external culvert variable cycle engine is optimized. The fuel consumption of cruising thrust is reduced by 7.8% and 16.4than that of the double-culvert and single-culvert engines with fixed geometry, respectively, while the maximum fuel consumption on the ground is reduced by about 3.4. the results show that, Inverse algorithm is an effective way to optimize the steady state control law of variable cycle engine.
【作者单位】：西北工业大学动力与能源学院;
【分类号】：V233.7

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