Optimum Control for Nonlinear Dynamic Radial Deformation of Turbine Casing with Time-Varying LSSVM
Joint Authors
Fei, Cheng-Wei
Bai, Guang-Chen
Tang, Wen-Zhong
Choy, Yat-Sze
Source
Advances in Materials Science and Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-25
Country of Publication
Egypt
No. of Pages
9
Abstract EN
With the development of the high performance and high reliability of aeroengine, the blade-tip radial running clearance (BTRRC) of high pressure turbine seriously influences the reliability and performance of aeroengine, wherein the radial deformation control of turbine casing has to be concerned in BTRRC design.
To improve BTRRC design, the optimum control-based probabilistic optimization of turbine casing radial deformation was implemented using time-varying least square support vector machine (T-LSSVM) by considering nonlinear material properties and dynamic thermal load.
First the T-LSSVM method was proposed and its mathematical model was established.
And then the nonlinear dynamic optimal control model of casing radial deformation was constructed with T-LSSVM.
Thirdly, through the numerical experiments, the T-LSSVM method is demonstrated to be a promising approach in reducing additional design samples and improving computational efficiency with acceptable computational precision.
Through the optimum control-based probabilistic optimization for nonlinear dynamic radial turbine casing deformation, the optimum radial deformation is 7.865 × 10−4 m with acceptable reliability degree 0.995 6, which is reduced by 7.86 × 10−5 m relative to that before optimization.
These results validate the effectiveness and feasibility of the proposed T-LSSVM method, which provides a useful insight into casing radial deformation, BTRRC control, and the development of gas turbine with high performance and high reliability.
American Psychological Association (APA)
Fei, Cheng-Wei& Bai, Guang-Chen& Tang, Wen-Zhong& Choy, Yat-Sze. 2015. Optimum Control for Nonlinear Dynamic Radial Deformation of Turbine Casing with Time-Varying LSSVM. Advances in Materials Science and Engineering،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1053606
Modern Language Association (MLA)
Fei, Cheng-Wei…[et al.]. Optimum Control for Nonlinear Dynamic Radial Deformation of Turbine Casing with Time-Varying LSSVM. Advances in Materials Science and Engineering No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1053606
American Medical Association (AMA)
Fei, Cheng-Wei& Bai, Guang-Chen& Tang, Wen-Zhong& Choy, Yat-Sze. Optimum Control for Nonlinear Dynamic Radial Deformation of Turbine Casing with Time-Varying LSSVM. Advances in Materials Science and Engineering. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1053606
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1053606