可变转速工况的压气机分布式动态模型与仿真

doi:10.13675/j.cnki.tjjs.190050

推进技术 ›› 2020, Vol. 41 ›› Issue (3): 675-684.DOI: 10.13675/j.cnki.tjjs.190050

可变转速工况的压气机分布式动态模型与仿真

陈亚新¹,苏三买¹

西北工业大学动力与能源学院，陕西西安710072

发布日期:2021-08-15
作者简介:陈亚新，硕士生，研究领域为航空发动机主动稳定控制。E-mail：2237585183@qq.com
基金资助:
航空科学基金（2013ZB53019）。

Compressor Distributed Dynamic Model and Simulation under Non-Constant Speed

School of Power and Energy,Northwestern Polytechnical University，Xi’an710072,China

Published:2021-08-15

摘要/Abstract

摘要： 针对目前压气机动态模型用于主动稳定控制时，存在既不反映压气机变转速工况又不能模拟压气机内部周向位置失速信号发展过程的不足，在一维状态变量描述的压气机失稳动态模型基础上，以喷气装置作为执行装置，通过傅里叶变换，采用多维状态变量描述压气机动态过程，建立了含喷气执行装置的压气机系统变转速工况下分布式动态模型。仿真结果表明，所建模型可实现定转速和变转速工况下的压气机不稳定行为动态仿真，采用该模型进行压气机主动稳定控制，可使压气机失速模态幅值由0.28减小为1×10^-5，能有效抑制压气机失速的发生，增强了模型的适用性。

关键词: 压气机;失速;失稳;分布式动态模型;主动稳定控制

Abstract: For present compressor model which is applied for active stability control is not capable of simulating at non-constant speed and capturing compressor stall signal development process at discrete positions in the circumferential direction of the compressor, based on the one-dimensional compressor dynamic model, the distributed compressor system model under non-constant speed with air injector was established. Air injector model was conducted to serve as the actuator. Then by Fourier series solutions, multi-dimensional state variables were used for describing compressor dynamic process. Simulation results show that the model can analyze compressor unstable dynamic under non-constant speed and constant speed. Moreover, using this model in compressor active stability control, it can reduce the stall mode amplitude from 0.28 to 1×10^-5, effectively suppress the occurrence of compressor stall, and enhance the applicability of the model.

陈亚新,苏三买. 可变转速工况的压气机分布式动态模型与仿真[J]. 推进技术, 2020, 41(3): 675-684.

CHEN Ya-xin¹,SU San-mai¹. Compressor Distributed Dynamic Model and Simulation under Non-Constant Speed[J]. Journal of Propulsion Technology, 2020, 41(3): 675-684.

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可变转速工况的压气机分布式动态模型与仿真

Compressor Distributed Dynamic Model and Simulation under Non-Constant Speed

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