Direct Surge Margin Control for Aeroengines Based on Improved SVR Machine and LQR Method
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-25
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
A novel scheme of high stability engine control (HISTEC) on the basis of an improved linear quadratic regulator (ILQR), called direct surge margin control, is derived for super-maneuver flights.
Direct surge margin control, which is different from conventional control scheme, puts surge margin into the engine closed-loop system and takes surge margin as controlled variable directly.
In this way, direct surge margin control can exploit potential performance of engine more effectively with a decrease of engine stability margin which usually happened in super-maneuver flights.
For conquering the difficulty that aeroengine surge margin is undetectable, an approach based on improved support vector regression (SVR) machine is proposed to construct a surge margin prediction model.
The surge margin modeling contains two parts: a baseline model under no inlet distortion states and the calculation for surge margin loss under supermaneuvering flight conditions.
The previous one is developed using neural network method, the inputs of which are selected by a weighted feature selection algorithm.
Considering the hysteresis between pilot input and angle of attack output, an online scrolling window least square support vector regression (LSSVR) method is employed to firstly estimate inlet distortion index and further compute surge margin loss via some empirical look-up tables.
American Psychological Association (APA)
Zhang, Haibo& Sun, Fengyong. 2013. Direct Surge Margin Control for Aeroengines Based on Improved SVR Machine and LQR Method. Mathematical Problems in Engineering،Vol. 2013, no. 2013, pp.1-17.
https://search.emarefa.net/detail/BIM-1032427
Modern Language Association (MLA)
Zhang, Haibo& Sun, Fengyong. Direct Surge Margin Control for Aeroengines Based on Improved SVR Machine and LQR Method. Mathematical Problems in Engineering No. 2013 (2013), pp.1-17.
https://search.emarefa.net/detail/BIM-1032427
American Medical Association (AMA)
Zhang, Haibo& Sun, Fengyong. Direct Surge Margin Control for Aeroengines Based on Improved SVR Machine and LQR Method. Mathematical Problems in Engineering. 2013. Vol. 2013, no. 2013, pp.1-17.
https://search.emarefa.net/detail/BIM-1032427
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1032427