发动机进气压力控制系统噪声抑制方法

白克强; 张松; 但志宏; 钱秋朦

doi:10.7527/S1000-6893.2021.25779

航空学报 >

2022 , Vol. 43 >Issue 8: 125779 - 125779

DOI: https://doi.org/10.7527/S1000-6893.2021.25779

流体力学与飞行力学

发动机进气压力控制系统噪声抑制方法

白克强 ,
张松 ,
但志宏 ,
钱秋朦

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1. 西南科技大学信息工程学院, 绵阳 621010;
2. 特殊环境机器人技术四川省重点实验室, 绵阳 621010;
3. 中国航发四川燃气涡轮研究院高空模拟技术重点试验室, 绵阳 621703;
4. 中国航发四川燃气涡轮研究院, 绵阳 621703

收稿日期: 2021-05-11

修回日期: 2022-01-12

网络出版日期: 2021-08-25

基金资助

四川省科技计划(2021YJ0334)

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Noise suppression method of intake pressure control system for aircraft engine

BAI Keqiang ,
ZHANG Song ,
DAN Zhihong ,
QIAN Qiumeng

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1. School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
2. Robot Technology Used for Special Environment Key Laboratory of Sichuan Province, Mianyang 621010, China;
3. Science and Technology on Altitude Simulation Laboratory, AECC Sichuan Gas Turbine Establishment, Mianyang 621703, China;
4. AECC Sichuan Gas Turbine Establishment, Mianyang 621703, China

Received date: 2021-05-11

Revised date: 2022-01-12

Online published: 2021-08-25

Supported by

Sichuan Science and Technology Program (2021YJ0334)

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摘要

高空台进气压力控制系统具有大时滞特性,被控对象受到输入噪声、相位延迟等不确定因素的影响,导致控制系统难以精准控制,给控制器的设计带来挑战。针对该问题,首先采用基于跟踪微分器(TD)的测量噪声抑制对系统输入噪声进行估计, 通过引入基于跟踪微分器与Fal函数滤波算法的相位补偿进行了补偿器设计。然后对高空台进气压力控制系统设计了跟踪微分器的测量噪声抑制算法, 并进行了滤波特性分析。在设计相位补偿方法时,不仅考虑了测量信号中随机噪声的分离,还对微分信号中的抖动信号进行了滤波,使得系统初始信号和滤波后的光滑微分信号重新构成新的有用信号,最终解决了输出信号的相位滞后对控制精度影响的问题。通过数值模拟对经典fhan算法和提出的Fast+PA(Phase Advancer)算法进行了比较,验证了Fast+PA算法噪声抑制的优势。结果表明,Fast+PA算法通过调整重要参数滤波因子h₀和向前预报补偿因子λ的值既能消除颤振及保证滤波的效率,又具有较好的相位补偿和动态响应能力。

关键词： 高空台; 进气压力控制; 噪声抑制; 跟踪微分器; 相位补偿器设计

本文引用格式

白克强 , 张松 , 但志宏 , 钱秋朦 . 发动机进气压力控制系统噪声抑制方法[J]. 航空学报, 2022 , 43(8) : 125779 -125779 . DOI: 10.7527/S1000-6893.2021.25779

Abstract

The intake pressure control system of the high altitude platform has the characteristics of large time delay. The controlled object is affected by uncertain factors such as input noise and phase delay, which leads to the problem that the control system is difficult to control accurately, and thus brings challenges to the design of the controller. To solve this problem, firstly, the measurement noise suppression based on Tracking Differentiator (TD) is used to estimate the system input noise, and the compensator is designed by introducing phase compensation based on tracking differentiator and Fal function filtering algorithm. Then, the measurement noise suppression algorithm of tracking differentiator is designed for the intake pressure control system of high altitude platform, and the filtering characteristics are analyzed. When designing the phase compensation method, not only the separation of random noise in the measurement signal is considered, but also the jitter signal in the differential signal is filtered, so that the system initial signal and the filtered smooth differential signal reconstitute a new useful signal, and finally solve the problem of the influence of the phase lag of the output signal on the control accuracy. Through numerical simulation, the classical fhan algorithm is compared with the proposed Fast + PA (Phase Advancer) algorithm, and the advantages of Fast + PA algorithm in noise suppression are verified. The results show that Fast + PA algorithm, through adjusting the important parameters filter factor h₀ and forward prediction compensation factor λ value, can not only eliminate chatter and ensure the efficiency of filtering, but also has good phase compensation and dynamic response ability..

Key words： high altitude platform; intake pressure control; noise suppression; tracking differentiator; phase compensator design

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