Noise suppression method of intake pressure control system for aircraft engine

BAI Keqiang; ZHANG Song; DAN Zhihong; QIAN Qiumeng

doi:10.7527/S1000-6893.2021.25779

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

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

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

Fluid Mechanics and Flight Mechanics

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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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

Cite this article

BAI Keqiang , ZHANG Song , DAN Zhihong , QIAN Qiumeng . Noise suppression method of intake pressure control system for aircraft engine[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022 , 43(8) : 125779 -125779 . DOI: 10.7527/S1000-6893.2021.25779

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