Advanced Search

2005 Vol. 31, No. 05

  Previous Issue | Next Issue 
Display Method:
Demand-oriented quality evaluation of common ammunitions
Song Zhidong, Li Yunhua
2005, 31(05): 485-488.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 1008
Abstract:
In order to play a good role in increasing the impact of military requirement, change the quality conception of our weapon equipments based on accordance with the designs for production to fit military requirement, increase the level of quality of our common ammunitions, evaluating scientifically th...
Multiplying nonlinear control in electrohydraulic complound system
Sun Weihua, Qiu Lihua, Qi Xiaoye, Wang Zhanlin
2005, 31(05): 489-493.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 689
Abstract:
A multiplying nonlinear model was built to the electro-hydraulic compound control of airborne actuation system. A new approach based on feedback linearization and receding horizon optimization was presented to the system. The relative degree was less than the order of the system, so nonlinear system...
Analysis of handover performance of mobile IPv6 and an implementation of its smooth handover framework
Kang Jianchu, Chen Yu
2005, 31(05): 494-498.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 1227
Abstract:
IPv4-based networks are faced with many problems like the lack of IP address, less security, and so on, which have limited the development of Internet, therefore, it is important to study the techniques of IPv6, so as to promote the construction of the next generation of Internet. The problems of ha...
Novel nonlinear prediction algorithm for fast fading channel
Sun Jiancheng, Zhang Taiyi, Liu Feng
2005, 31(05): 499-503.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 1162
Abstract:
Prediction of the rapidly fading mobile radio channel enables a number of capacity improving techniques such as the fast adaptive resource allocation or fast adaptive modulation. To predict the fast fading channel parameters, the embedding phase space was reconstructed by utilizing times delay techn...
Fractal-based covariance function description and classification of natural texture images
Wang Hua, Wang Qi
2005, 31(05): 504-507.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 966
Abstract:
To deal with the problem of charactering and classifying natural textures in images, a technique was employed which is based onthe fractional Brownian motion model and its covariance function. The covariance function of fractional Brownian motion was proposed to estimate the Hurst coefficient and co...
New star pattern recognition approach based on Hausdorff distance
Wang Guangjun, Fang Jiancheng
2005, 31(05): 508-511.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 898
Abstract:
A new star pattern recognition approach has been devoloped. Its based idea was first extraction the star pattern information, fitting together the information to a pending data set B, putting all star catalog information into a criterion data set A, then computing the relative Hausdorff distance of ...
Application of trigonometric series for rigid wakes analysis of rotor aerodynamics in hover
Chen Ming, Sun Junyong
2005, 31(05): 512-515.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 214
Abstract:
To describe the attachment vortex circulation distribution of blades, contacting blade element theory, trigonometric series was adopted and applied for the model of classical rotor vortex theory. Some studies have been done for the air-operated characteristic of single rotor and co-axial rotors in h...
Optimum design of the strategy of antimissile’s penetration
Jiang Yuxian, Chen Jinghua
2005, 31(05): 516-519.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 253
Abstract:
An application of genetic algorithms in the optimum design of the strategy of antimissile’s penetration was studied. The integrated process of antimissile’s penetration was divided into several stages; the optimum design of the integrated probability of penetration was transferred into the optimum d...
Application of genetic algorithm in high frequency 2-D scattering signatures analysis
Zheng Jun, Su Donglin
2005, 31(05): 520-523.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 214
Abstract:
To investigate the scattering features of radar target in high frequency, a joint time-frequency analysis method——the adaptive Gaussian basis representation (AGR) was introduced to simplify the 2-D scattering parameter model.To estimate the model parameters, Genetic algorithm (GA) was proposed. This...
Helicopter dynamic response to wind shear in forward flight
Hong Guanxin, Pang Jian
2005, 31(05): 524-528.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 218
Abstract:
In order to solve the problem of numerical simulation of the helicopter motion in wind shear and study the characteristics of the helicopter dynamic response to wind shear, one-dimensional and two-dimensional wind shear models were set up, nonlinear system mathematical model of helicopter flight dyn...
Numercial simulation of transonic axial compressor rotor flow with tip clearance using multi-block meshes
Li Minjiang, Gui Xingmin
2005, 31(05): 529-534.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 516
Abstract:
To investigate the tip clearance flow in transonic compressor rotor, a 3D numerical simulation code was developed. The 3D flow fields of a transonic axial compressor, NASA Rotor 37, with considering the tip clearance were simulated using Reynolds-averaged Navier-Stokes equations with high Reynolds-N...
Application of the hybrid BP/GA algorithm in simple integrated navigation system
Fan Yuezu, Zhang Yinan, Ma Haokai, Wen Xin
2005, 31(05): 535-538.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 193
Abstract:
Kalman filter is the most usual optimization filter with some limitation when applied in the integrated navigation system. Especially in simple global positioning system/ dead reckoning system (GPS/DRS ),the receiver and the inertial navigation units are low-cost and low-accuracy. To improve accurac...
On reliability model of FC interconnections
Xu Yajun, Zhang Xiaolin, Xiong Huagang
2005, 31(05): 539-543.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 281
Abstract:
To solve calculable problem of the reliability of fibre channel (FC) interconnection, based on basic FC interconnection model, a task based analysis method of system reliability was proposed, a reliability model of FC interconnection system was developed and the matrix of system reliability was used...
Animating virtual human for maintenance simulation with mixing control
Lü Chuan, Xu Hongqiang, Ma Lin, Zhou Dong
2005, 31(05): 544-547.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 142
Abstract:
There are two driving modes used to control virtual human during the process of virtual maintenance simulation. One mode that is called immersion simulation is to use virtual reality device, and the other mode that is not immersion simulation is to use algorithm. The two methods have different limit...
Grey relational analysis of fuzzy comprehesive evaluation of air quality in manned spacecraft
Pang Liping, Wang Jun
2005, 31(05): 548-551.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 267
Abstract:
The habitation module in manned spacecraft is a closed-chamber, and its air quality is increasingly attached importance along with longer time missions because it greatly influences the health of crew. It is necessary to put forward a new evaluation method of air quality. Based on the grading fuzzy ...
Stress relaxation of open-cell foamed plastics
Lu Zixing, Zhang Hui
2005, 31(05): 552-555.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 215
Abstract:
Open cell foamed plastics have better energy absorption characteristics and better cushioning properties so that they are extensively used in engineering areas. Thus, their visco-elastic behavior has attracted the most people attentions. Based on the Lederman model, the stress relaxation of open-cel...
Optimized evaluation point designing for R&D project
Wang Jing, Xi Yang, Han Yong
2005, 31(05): 556-560.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 255
Abstract:
Having been widely adopted in the management of research and development (R&D) projects, concurrent engineering can largely shorten the time limits for projects, however, its risk is higher. A risk model of implementing concurrent engineering was built. The optimum decision point is exactly the ...
Chirp Hartley, Chirp cosine and Chirp sine transforms
Bian Yong, Zhou Yinqing, Li Chunsheng
2005, 31(05): 561-565.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 211
Abstract:
The definitions of analog Chirp Hartley transform, analog Chirp cosine transform, and analog Chirp sine transform were given firstly. The definitions of discrete Chirp Hartley transform, discrete Chirp cosine transform, and discrete Chirp sine transform were given secondly. These transforms were use...
High precision interpolation algorithm for star pattern
Wang Guangjun, Fang Jiancheng
2005, 31(05): 566-569.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 187
Abstract:
To extract the star position and star magnitude, a new algorithm was developed. The algorithm regards the star imaging pattern as Gauss point spread function model. The coefficient of Gauss curved face function was getted using the combination of linearity interpolation method and least squares meth...
Visualized expansion of managed objects in dynamically constructed network management
Yang Rui, Qian Depei, Luan Zhongzhi, Chen Heng
2005, 31(05): 570-573.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 291
Abstract:
Facing ever expanding of the Internet and the increasing number of applications on the network, the traditional network management is not able to satisfy the new demands on managing changing networks and applications. A new network management model——dynamically constructed network management was the...
Dual-objective optimization design for cost and performance of a solid rocket motor
Yang Qing, Qiu Wanhua, Wang Liang
2005, 31(05): 574-577.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 327
Abstract:
To solve the problem of multiple attributes value optimization in the upper stage solid propellant rocket engines of a launch vehicle, parameter-cost models of motor parts were established and an improved pareto genetic algorithms(IPGA) that combines the NSGA-Ⅱ with local search algorithm was presen...
Interconnection between BACnet and Internet
Fang Yi, Xiong Zhang, Wang Zhongxin
2005, 31(05): 578-582.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 399
Abstract:
The comparison and analysis of two current interconnection technologies between a data communication protocol for building automation and control network(BACnet) and Internet, including BACnet/internet protocol packet-assembler-disassembler(B/IP PAD) and BACnet/IP, was carried out. The existing ques...
Enhanced mixing in 2D micro-channel electro-osmotic flows
Fang Li, Zhang Jinbai
2005, 31(05): 583-586.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 238
Abstract:
Micro electro-mechanical system (MEMS) elements are extremely small,soslow mixing due to low Reynolds number is the one of most significant performance limitations for micro-fluidic systems.The present work is a numerical study of the electro-osmotic flows (EOF) in micro-channel with non-uniform wal...
Decentralized robust reliable H∞ control of uncertain interconnected systems with delays in subsystems interconnection
Li Tong, Jia Yingmin
2005, 31(05): 587-591.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 235
Abstract:
Two kinds of typical problems frequently encountered in the control engineering were investigated, i.e. parameter uncertainty and control component failure. For a class of discrete-time uncertain interconnected systems with delays in subsystems interconnection, a linear matrix inquality(LMI)-based d...
Pressure characteristics and control method of wind tunnel for sand and dust test
Yuan Lingshuang, Li Yunze, Wang Jun
2005, 31(05): 592-594.
Abstract References Relative Articles Resource File Access Statistics iconViews $!{v.htmlCount} iconDownload 219
Abstract:
Pressure adjustment of wind tunnel for sand and dust test is different from general circumfluent one. In order to determine characteristics of pressure variation, dynamic model for controlling-pressure point, testing port andinjecting-sand-and-dust port was established, by the means of lumped parame...

Copyright © Journal of Beijing University of Aeronautics and Astronautics

Address: Editorial Department of Journal of Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing Post Code: 100191 Email: jbuaa@buaa.edu.cn

Supported by: Beijing Renhe Information Technology Co., Ltd.