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2011 Chinese Control and Decision Conference（CCDC）

作者： Jianguo Cui1,Jianqiang Shi1,Yuezhong Li2,Shiliang Dong3,Xiao Cui4,Tao Huang5 (1.school of Automation,shenyang aerospace university,shenyang 110136,china 2.school of northern science and technology,shenyang aerospace university,shenyang 110136,china 3.shenyang Aircraft Design & Research Institute,shenyang 110035,china 4.school of Information science and Engineering,shenyang university of technology,shenyang 110870,china 5.school of Management and Economics,shenyang aerospace university,shenyang 110136,china)

Aero-generator life prediction is an important problem to solve in aviation *** paper proposes a variable weight combination model,which is Based on MGM(1,n) model and LSSVM model,to predicts the life of *** the use of special accelerating life test platform for a certain type of real aero-generator,test data of the input speed,fuel injection pressure,load,inlet oil temperature as well as other life characteristic parameters of generator are *** an in-depth analysis of these parameters,the variable weight combination model is built,to solve the problem that the prediction accuracy of traditional single life prediction model is not *** use the combination model to predict the life parameters of *** results show the superiority of combination model that the prediction accuracy of the variable weight combination model is better than each single prediction *** variable weight combination model may accurately achieve the purpose of aero-generator life prediction and has good practical engineering value.

关键词： Aero-generator Life Prediction MGM(1 n) LSSVM Variable Weight Combination Model

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C^0 and C^1 theories and test functions for FEM patch test in microstructures

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science china(Physics,Mechanics & Astronomy) 2010年第6期53卷 1086-1093页

作者： CHEN WanJi Institute for Structural Analysis of Aerocraft,shenyang aerospace university,shenyang 110136,china 1. Institute for Structural Analysis of Aerocraft Shenyang Aerospace University Shenyang 110136 China

Among many theories and categories in microstructures,rotation-displacement used as "independent" or "dependent" variables,is a noticeable topic. In FEM,it is called C0 and C1 theory. The convergence criteria of finite elements for microstructures are less mature than those for the conventional thin plate bending problem. In this paper,the patch test functions for assessing convergence of the C0 and C1 finite elements in microstructures is established based on the enhanced patch test theory. The author has further explored the C0 and C1 finite element theories and investigated the difference and correlation between their finite element formulations. Newly proposed finite element theories for microstructures are as follows:(1) the displacement-rotation dependent C1 element that requires the element function satisfying both C0 and C1 continuity;(2) the displacement-rotation independent C0 element which requires new convergence criteria,such as non-zero constant shear stress patch test and zero constant shear stress patch test for approximating C1 element.

关键词： couple stress theory displacement-rotation dependent theory displacement-rotation independent theory finite element method for microstructures test function for patch test

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Nonholonomic mapping theory of autoparallel motions in Riemann-Cartan space

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science china(Physics,Mechanics & Astronomy) 2010年第9期53卷 1707-1715页

作者： GUO YongXin1,LIU Chang2,WANG Yong3,LIU ShiXing1 & CHANG Peng2 1 College of Physics,Liaoning university,shenyang 110036,china 2.school of aerospace Engineering,Beijing Institute of technology,Beijing 110081,china 3 school of Basic Medical science,Guangdong Medical College,Dongguan 523808,china 1. College of Physics Liaoning University Shenyang 110036 China2. School of Aerospace Engineering Beijing Institute of Technology Beijing 110081 China3. School of Basic Medical Science Guangdong Medical College Dongguan 523808 China

The method of nonholonomic mapping is utilized to construct a Riemann-Cartan space embedded into a known Riemann-Cartan space,which includes two special cases that a Weitzenbck space and a Riemann-Cartan space are respectively embedded into a Euclidean space and a Riemann *** means of this mapping theory,the nonholonomic corresponding relation between the autoparallels of two Riemman-Cartan spaces is *** particular,an autoparallel in a Riemann-Cartan space can be mapped into a geodesic line in a Riemann space and an autoparallel in Weitzenbck space be mapped into a geodesic line in Euclidean *** on the Lagrange-d'Alembert principle,the equations of motion for dynamical systems in Riemman-Cartan space should be autoparallel equations of the *** applications,the problem of autoparallel motion of spinless particles,Chaplygin's nonholonomic systems and a rigid body rotating with a fixed point are investigated in space with torsion.

关键词： nonholonomic mapping Riemann-Cartan space connection torsion autoparallel

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维普期刊数据库

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Analysis on the Securities Industry and Capital Market Development Situation of Jilin Provinces

Analysis on the Securities Industry and Capital Market Devel...

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2011 3rd IEEE International Conference on Information Management and Engineering(ICIME 2011)

作者： Wei Lan The Economic and Management school shenyang aerospace university shenyang china Jiang Xiaoyang The Economic and Management school shenyang aerospace university shenyang china

The securities industry in Jilin Province make great efforts to accelerate the pace of company listing,growth the ranks of listed companies,by going public through buying a shell and so on,a variety of ways to expand the size of direct *** paper is on the basis of the analyzed the status of the securities in Jilin Province;we use the principal component analysis,giving the score for the development of provincial securities.

关键词： comparative analysis securities industry principal component analysis

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Fault Detection of Rolling Element Bearing Based on Principal Component Analysis

Fault Detection of Rolling Element Bearing Based on Principa...

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第24届中国控制与决策会议

作者： Liying Jiang, Xinxin Fu, Jianguo Cui, Zhonghai Li school of Automation, shenyang aerospace university, shenyang 110136, china

The Principal Component Analysis （PCA） has been widely used to detect and diagnose the faults of industry processes. However, this technique is rarely applied to the fault detection and diagnosis of rolling element bearing. The main reason is that PCA is a kind of multivariate statistical technology, but bearing vibration signal is one dimensional time series. A new method of fault detection based on PCA for rolling element bearing is proposed in this paper. Firstly, the vibration signal is mapped into a high dimensional space. Then, PCA is applied in this space. The proposed method is tested with experimental data collected from drive end ball bearing of a 2 hp Reliance Electric motor driven mechanical system. The simulation results show the PCA-based method of bearing fault detection is effective and is superior to the traditional PCA-based approach.

关键词： Vibration Signals PCA Rolling Bearing Fault Detection

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A Clonal Selection Adaptive Local Search Operator for multi-objective optimization evolutionary algorithm

A Clonal Selection Adaptive Local Search Operator for multi-...

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第24届中国控制与决策会议

作者： Yong Li 1 , Yu Wang 2 , Yuxian Zhang 1 , Yuejun An 1 1. school of Electrical Engineering, shenyang university of technology, shenyang 1108702. Department of Automatic Control, shenyang aerospace university, shenyang 110136

A clonal selection adaptive local search operator for multi-objective optimization evolutionary algorithm is proposed in order to enhance the search capability and expedite convergence speed of the multi-objective evolutionary algorithms. A crossover based adaptive local search algorithm including a method to change the clonal scale of different individuals adaptively according to their position in the whole population is proposed. Test functions with two objectives and three objectives are selected to confirm the performance of the operator. Results show that the clonal selection adaptive local operator makes multi-objective optimization evolutionary algorithm has better performance in convergence and distribution.

关键词： Clonal selection. Adaptive local search operator. Multi-objective optimization evolutionary algorithm.

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An Adaptive Immune Genetic Algorithm and Its Application for FJSP

An Adaptive Immune Genetic Algorithm and Its Application for...

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2010 4th International Conference on Intelligent Information technology Application (IITA2010)

作者： Jia Ma1 school of Economic and Management shenyang aerospace university shenyang china Jia Ma2 shenyang Institute of Automation Chinese Academy of sciences shenyang china Yunlong Zhu shenyang Institute of Automation Chinese Academy of sciences shenyang china Gang Shi school of Information science and Engineering Northeastern university shenyang china

This paper presents a kind of adaptive immune genetic algorithm（AIGA） to deal with flexible job-shop scheduling problem. This algorithm adopts the immune operator and adaptive regulation strategy to improve greatly the diversity of antibodies population. Experimental results showed that the proposed AIGA can rise above efficiently such difficulties of SGA as precocious convergence and poor local search ability and provide well the global converging ability to enhance both global convergency and convergence rate, thus solving effectively the FJSP problem. the diversity of antibodies population.

关键词： flexible job-shop scheduling problem immune genetic algorithm adaptive strategyvaccine

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The Condition Trend Analysis of Aircraft Key Components Based on D-S Evidence Theory

The Condition Trend Analysis of Aircraft Key Components Base...

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第24届中国控制与决策会议

作者： Jianguo Cui 1 , Jianqiang Shi 1 , Shiliang Dong 2 , Liying Jiang 1 , Rui Lv 2 , Haigang Liu 2 1. school of Automation, shenyang aerospace university, shenyang 110136, china2. shenyang Aircraft Design & Research Institute, shenyang 110035, china

In order to improve and heighten the accuracy of condition trend analysis to key components of aircraft, to grasp their running state in time and avoid accidents, In the beginning, the paper analyze a lot of characteristic dates of running state from a large number of long-term tests deeply. On this basis, two condition trend analysis models: GM（1,1） and ARMA model are established, using these two models to analyze the condition trend of key components of aircraft, and operating the decision-level fusion of the results of the above models with D-S evidence theory. The research shows that both of GM（1, 1） model and ARMA model can predict the condition trend of key components of aircraft, and we can get the better result after using D-S evidence theory fusion. So this paper gives a good trend analysis method, and it has a good value of engineering application.

关键词： Key Components of Aircraft Condition Trend Analysis GM (1 1) ARMA (n m) D-S Evidence Theory

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Dynamic Nonlinear Search Technologies Based on Military Strength Model in Surakarta

Dynamic Nonlinear Search Technologies Based on Military Stre...

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第24届中国控制与决策会议

作者： QIU Hongkun 1 , GAO Fuxiang 2 , WANG Yajie 1 , LIU Cheng 1 , GU Leitao 1 1. shenyang aerospace university, shenyang 110136, china2. Institute of Information science and Engineering, Northeastern university, shenyang 110819, china

In the traditional Surakarta game, the single objective search technology which has to degrade the search depth to meet the single time constraint is often used .So dynamic nonlinear search technology, based on the "military strength" fuzzy set, is used to find the best answer to meet with the search time and the multi-objective search depth. The fuzzy model of the "military strength" is established by following a large number of experiments’ data. And according to the changes of the game, global evaluation value is adjusted. And then, combined with the experiments we get the empirical equation. So the rule of multilevel search depth is established after multiple linear regression statistics. Multilevel search depth can also be adjusted to get the optimal solution of dynamic search under the multiple constraint conditions. The experiment proves that the overall strength is distinctly improved in the computer game of Surakarta by using the technology. And it is verified by the experiment.

关键词： Surakarta Computer game military strength dynamic search fuzzy set

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Improved Rotation Invariant Template Matching Method Using Relative Orientation Codes

Improved Rotation Invariant Template Matching Method Using R...

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第三十届中国控制会议

作者： LI Zhonghai~1,LIU Chunyu~1,CUI Jianguo~1,SHEN Weifeng~2 1.school of Automation,shenyang aerospace university,shenyang 110136,P.R.china 2.Hanwang science and technology Limited Company,Beijing 100080,P.R.china

＜正＞Orientation code is the quantization of pixel gradient orientation,which is illumination invariant,and has become an important template matching *** order to improve accuracy and real time ability,we present conception of relative orientation code,and design template matching method based on relative orientation *** method first selects candidate target points using relative orientation codes histogram matching,then calculate the rotation angle of candidate subimage and rotate the sub image,finally match the relative orientation codes in the sub *** experiment show that this method is robust when the image is rotated by any angle,and the candidate points are selected and matched accurately,and the computing time is less than original method.

关键词： Orientation Code Rotation Invariant Template Matching Histogram Matching

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