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2006 Vol. 32, No. 05

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Target identification of different task weight under multi-interface and multi-task
Zeng Qingxin, Zhuang Damin
2006, 32(05): 499-502.
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Abstract:

Target identification for weapon equipment in human machine interface design must to be settled through the research of experiments and assessments. A target identification experiment of multi-interface and multi-task was developed, according to tasks what pilot need to operate during flying. This w...
Bi-point/bi-objective optimization design of ailfoil using N-S equations
Wang Xiaolu, Zhu Ziqiang, Liu Zhou, Wu Zongcheng
2006, 32(05): 503-507.
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Based on the computation of N-S equations and the technique of wake integration method, the sharp of the airfoil was paramerically modeled, the bi-point(BP)/bi-objective(BO) optimization design of ailfoil was discussed with the comparison of single-point(SP)/single-objective(SO) and single-point(SP)...
Application of design sensitivity in aeroelastic genetic optimization
Wan Zhiqiang, Yang Chao
2006, 32(05): 508-512.
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A design study aimed to optimize a composite wing in an aeroelastic way was presented using genetic algorithm and genetic/sensitivity-based hybridalgorithm. In order to increase the search efficiency of the above-mentioned two algorithms, a set of methods was put forward to fix primary and secondary...
Optimization of glide trajectory for a hypersonic vehicle
Zhou Hao, Chen Wanchun, Yin Xingliang
2006, 32(05): 513-517.
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According to hypersonic vehicle’s density model, dynamic model, areodynamic force models and the angle of attack considered as the input, the trajectory problem was cast as the optimal control problem and pontriaghin maximum principle was used to obtain first order necessary condition. A combined op...
Quantitative measuring method of pilots’ attention allocation
Liu Zhongqi, Yuan Xiugan, Liu Wei, Kang Weiyong
2006, 32(05): 518-520.
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Abstract:
Subjects finished three different flight simulation tasks in a simulator in the laboratory. Eye movement data was recorded with eye tracking system. Visual information sources were divided into two AOIs (area of interest): IP (instrument panel) AOI and OV (out view) AOI. The three eye movement indic...
Expert system of maintenance review board report based on CBR and RBR
Liu Ming, Zuo Hongfu, Geng Duanyang, Cai Jing
2006, 32(05): 521-525.
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Abstract:
According to the need of maintenance program development, a civil aircraft maintenance review board report (MRBR) development method was presented according as the latest maintenance steering group(MSG) ideals and the maintenance programs experiences of similar aircrafts. The method integrates case-...
Digital definition of aircraft structure product
Lu Hu, Fan Yuqing
2006, 32(05): 526-530.
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In order to meet the requirement of digital information system deployed in aircraft development, studying the aircraft structure product definition is very important. Based on anglicizing the method and process of aircraft development under the digital circumstance, the content and the form of aircr...
Dynamic characteristic of squeeze film based on finite element method
Deng Yin, Lin Li, Shi Yajie, Hong Jie
2006, 32(05): 531-535.
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SFD(squeeze film dampers) designed to provide proper amounts of damping and stiffness to alleviate the problem of vibration are used extensively in almost all high-speed rotating machines, such as aeroengine. A squeeze film analysis based on finite element method was proposed for solving the steady ...
Game behaviors and efficiency analysis under Chinese pricing system of military aviation products
Gao Yuanyang, Qian Yonggang, Wang Wenjie
2006, 32(05): 536-539.
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Abstract:

According to the current pricing system and procedure of military aviation product in China, a theoretical analysis model was built, which was used to describe and analyse the game behaviors of players in the market and their effects on efficiency under the current pricing system based on cost. The ...
Adaptive spectral estimation based acquisition for frequency hopping signals
Huang Dongwei, Shao Dingrong, Li Shujian
2006, 32(05): 540-543.
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Abstract:
A FH(frequency hopping) signal acquisition technology based on frequency estimation was introduced. An adaptive spectral-estimation model was established, and the frequency estimation was implemented by autoregressive and adaptive algorithm. However, for a fading and AWGN (additive-white Gaussian no...
Fault diagnosis of control electric component based on RBF neural network
Yuan Haiwen, Lü Hong, Yuan Haibin
2006, 32(05): 544-547.
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Abstract:
Based on nonlinear mapping relationship between fault symptom and fault type in control electric component, RBFNN(radial basis function neural network) approach was presented for fault diagnosis. Fault mechanism and failure behavior of control electric component was analyzed, then featured fault typ...
Design and realization of high reliability tri-redundancy digital actuator controller
Jin Hongtao, Jiao Zongxia, Wang Shaoping, Han Pengxiao
2006, 32(05): 548-552.
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Abstract:
To attain a high reliability, controller of the servo actuating system was developed with tri-redundancy. CCDL(cross channel data link), synchronization between different channels, setting voting/monitoring plane and other key technologies of redundancy were presented. A method of self-monitoring of...
EHA controller design based quantitative feedback theory
Ma Jiming, Fu Yongling, Gao Bo
2006, 32(05): 553-557.
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Abstract:
QFT (quantitative feedback theory) is a robust controller design method. It has good practicability and has been widely used in hydraulic servo control system. After creating the EHA(electrical hydrostatic actuator)’s model, the inner and outer loop controllers were designed based on QFT. Inner loop...
Computation of microwave RCS of various bodies
Pan Shunkang, Lü Shanwei, Feng Keming, Wang Wei
2006, 32(05): 558-560.
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Abstract:
The moment method was used to calculate the RCS (radar cross section) of cell of great metal various body which has two-dimension periodic configuration．Then antenna array technology was used to compute the RCS of whole various body．The method could both ensure the precision of calculation and solve...
Comparison between adaptive algorithms using in GPS receiver
Mohamed E A, Wang Yongfang, Tan Zhanzhong
2006, 32(05): 561-565.
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Abstract:
To compare the adaptive algorithms performance, such as power inversion (PI),multiple signal classification (MUSIC),and min-norm algorithms, the algorithms principle was analysed. In computer simulation, the algorithms were adopted in uniform linear array, the antenna gain in the useful signal and i...
Stability of time-delay fault tolerant control systems with markovian parameters
Gao Fei, Zhang Hongyue
2006, 32(05): 566-570.
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Abstract:
FDI (fault detection and isolation) is a crucial part in AFTCS (active fault tolerant control system), so how to model the FDI process and evaluate its influence upon the system is very important. Considering constant networked-induced time delay between sensor and controller in the transmission, tw...
Hydraulic simulator outer gimbal FNN controller design and simulation
Wang Kai, Wang Zhanlin, Qiu Lihua, Fu Yongling
2006, 32(05): 571-574.
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Abstract:
Taking hydraulic simulator outer gimbal as controlled object, direct adaptive fuzzy controller(DAFC) and synchronizing fuzzy controller(SFC) for outer gimbal to resolve disturbance from load and synchronizing drive of dual hydraulic motors, which are primary factors affected on the performance of hy...
Steel bar real-time recognition and tracking method
Zhang Yusheng, Fu Yongling
2006, 32(05): 575-579.
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Abstract:
Feature extraction and pattern matching are the key problems in recognition and tracking system of multiple objects. In order to extract the features of stacked steel bars in real production environment, a method was proposed, which consisted of connected objects segmentation and multiple objects re...
Local interference identification of multi-point machining
Wang Ruiqiu, Chen Wuyi, Jin Man
2006, 32(05): 580-584.
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Abstract:
In order to get rid of the local interference of the tool positions calculated using multi-point machining algorithm, the discriminant of local interference was derived after the analysis on the geometric match between the disc cutter with a concave end and the desired surface. The ratio of curvatur...
Approach to process improvement based on process failure knowledge and its implementation
Wei Li, Zheng Lianyu, Liu Rihui
2006, 32(05): 585-589.
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Abstract:
Process planning is a continued improving and optimizing process, and reverse process knowledge, namely process failure knowledge which is experience of process improving measures where process quality problems occur in production, is quite effective to improve and optimize process solution. A proce...
Method of stiffness equivalence for calculating three-layer thin shells
Guan Shiwei
2006, 32(05): 590-593.
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Abstract:
A relatively simple method for calculating three-layer shells was proposed for the complex problem of three-layer shell calculation, named as the method of stiffness equivalence, which was based on the research achievement of general thin-shell theory and could directly use those theoretical formula...
Mechanical model of two-dimensional cellular materials with negative Poisson’s ratio
Lu Zixing, Zhao Yabin
2006, 32(05): 594-597.
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Cellular materials with negative Poisson’s ratio have unique mechanical performance and a promising prospect of applications. A mechanical model of two-dimensional cellular materials with negative Poisson’s ratio, composed of partly re-entrant and partly regular hexagons, was proposed based on rotat...
Wavelet image compression based on support vector machines
Li Yuancheng, Jiao Runhai, Li Bo
2006, 32(05): 598-602.
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Abstract:

A novel image compression algorithm that combined SVM(support vector machines) regression and wavelet transform was presented. SVM regression could learn dependency from training data and realized compression by using fewer training point (support vectors) to represent the original data. Thus, wavel...
Implicit mapping mechanism in pen-based three-dimensional modeling system
Gong Yingkui, Fan Yuqing, Wu Zhifang
2006, 32(05): 603-606.
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The pen-based three-dimensional modeling system supports the user to sketch freely based on pen-paper metaphor so as to express three-dimensional models, and carries out corresponding three-dimensional modeling according to the user’s interaction intention. A kind of implicit mapping mechanism was p...
Novel scheme to locate software fault by aggregate analysis of program behaviors
Jia Xiaoxia, Wu Ji, Jin Maozhong, Liu Yongpo
2006, 32(05): 607-611.
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It is an interesting and noteworthy issue to locate rapidly and effectively the fault according to the input and the program behavior in case of software failure. A drill-down framework for fault localization was proposed, based on which the fault localization problem was expressed in a step-by-step...
Design of an infrared-imaging homing head simulator
Deng Ke, Hu Kai, Hu Jianping, Lu Xuerong
2006, 32(05): 612-616.
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Abstract:
The design and research of an advanced infrared-imaging homing head simulator were introduced, and its architecture,major performance parameter,track arithmetic and experiment results were provided. Based on succeed designedimaging identify and track circuit which contain two parallel microcomputers...
Fast motion estimation algorithm for H.264 with multi-references
Pu Juhua, Xiong Zhang, Liu Yongli
2006, 32(05): 617-620.
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H.264, in spite of its high quality, is very time-consuming due to its complex motion estimation. A fast motion estimation (FME) algorithm called valid-region-based FME (VRF) was proposed by exploring the motion continuity property in multiple reference frames (RFs). VRF used 3-step search(3SS) FME ...
Incremental recognition method for pen-based sketch
Gong Yingkui, Fan Yuqing, Wu Zhifang
2006, 32(05): 621-624.
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A method of two-dimensional sketch recognition based on incremental mode was proposed according to the characteristics of gesture interaction inpen-based three-dimensional modeling technology. The sketch recognition includes: on-line stroke recognition and conversion, automatic constraint catching a...

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