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2009 Vol. 35, No. 3

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Small unmanned aerial vehicle for polar research
Lei Xusheng, Wang Ting, Liang Jianhong, Wang Tianmiao
2009, 35(3): 267-271.
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Focusing on the high wind disturbance in the polar environment, an adaptive Kalman filter algorithm with radial basic function neural network was proposed to improve attitude information performance for the small unmanned aerial vehicle. Based on the unmanned aerial vehicle situation information and...
Feasibility study of MHD energy bypass scramjet
Zheng Xiaomei, Xu Dajun, Cai Guobiao
2009, 35(3): 272-275.
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Abstract:
The performance of magnetohydrodynamics(MHD) energy bypass scramjet was analyzed using quasi-one dimensional mathematical model. MHD application on ideal and un-ideal scramjet was investigated, the results show that for ideal scramjet there is no need to use MHD devices, for un-ideal scramjet the pe...
Effects of rotating induced forces on fluid flow and heat transfer in square channel
Liu Chuankai, Ding Shuiting, Tao Zhi
2009, 35(3): 276-279.
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Abstract:
Numerical simulations of turbulent flow and heat transfer in a rotating smooth radial outward flow passage were performed with rotation number from 0 to 0.24, density ratio from 0 to 0.22, and fixed Reynolds number of 25000. Effects of Coriolis force and Centrifugal force were analyzed with the thr...
Dynamical thermal analysis of microchannel cooling system for in-orbit nano-satellite
Liu Jia, Li Yunze, Wang Jun
2009, 35(3): 280-283.
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Abstract:
Considering the continually rising tendency of the power densities of nano-satellite, MEMS (micro electro mechanical systems)based pumped liquid microchannel cooling system was introduced. Dynamical thermal response model for the temperature changes of both the controlled object and the cooling devi...
CAN modeling and simulation based on OPNET
Li Xiaoting, Ding Fan, Xiong Huagang
2009, 35(3): 284-287.
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To analyze controller area network (CAN) protocol and evaluate CAN network performance, the CAN network modeling method was developed, based on the OPNET network simulation environment. Layered modeling method was adopted to implement CAN node model. Medium access control (MAC) module, error module ...
Single-phase forced convective heat transfer in swirl microchannels
Xi Youmin, Yu Jianzu, Xie Yongqi, Gao Hongxia
2009, 35(3): 288-291.
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The experiment of heat transfer in four swirl microchannel test pieces was conducted with ethylene glycol solution of 30% (volume concentration). The test pieces- cross section was rectangular with width 0.3mm and different depth. Constant heat flux was adopted as heating manner. Each test piece wa...
Information fusion algorithm in INS/SMNS integrated navigation system
Zhao Jingjing, Wang Y
2009, 35(3): 292-295.
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Abstract:
The problems, such as time alignment, multi-rate filter, unequal interval and measurement delay, were involved when information was fused in inertial navigation system /scene matching navigation system(INS/SMNS)integrated navigation system. In order to solve them, a solution, based on the fact that ...
Dynamics analysis and modeling of helicopter rotor test-bed
Xue Liangru, Wang Shaoping
2009, 35(3): 296-299.
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Abstract:

The helicopter rotor test-bed is one of the main equipments to test the helicopter rotors. The testing effect and control accuracy can be improved by making kinetics analysis and building the model of the helicopter rotor test-bed. The helicopter rotor test-bed structure and functions were introduce...
Solution for SMP cluster virtualization
Peng Jinbing, Long Xiang, Xiao Limin
2009, 35(3): 300-303.
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Cluster is a kind of important parallel computer architecture with the advantages of low cost and good scalability, but also with the pitfalls of poor programmability and difficult administration. By means of the virtualization technologies, a distributed cluster could be abstracted to a share-memor...
Broadband fiber source mean-wavelength control with optical power feedback
Yang Yuanhong, Shen Tong, Zhao Guancheng
2009, 35(3): 304-307.
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Abstract:
To promote the broadband fiber source temperature stability, the mean-wavelength stability of broadband fiber source was analyzed and the dependence between the mean-wavelength and the output optical power was revealed based on the simulation and experiment study on the change of mean-wavelength and...
Calculation of thermal load and impact factor analysis for hypersonic vehicle
Zhang Lizhen, Wang Xiaoming, Dong Sujun, Wang Jun
2009, 35(3): 308-312.
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Endothermal thermal protection system (TPS) and liquid N2 heat sink were chosen to calculate the characteristics of thermal control system (TCS) in hypersonic vehicle. The methods of radiation balance and double lumped parameter were adopted to obtain the thermodynamic model of adiabatic layer and c...
Numerical analysis of flow and heat transfer characteristics of Y-fractal-link micro channel networks
Xu Guoqiang, Wang Meng, Wu Hong, Tao Zhi
2009, 35(3): 313-317.
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Abstract:
A new fractal structure, Y-fractal-link micro channel network, was proposed for cooling the inside of cubic chip. Numerical simulations of laminar heat and flow transfer were conducted for both Y-fractal-link micro channel network and straight parallel micro channel network. In addition, the optimiz...
Numerical simulation on compressive yielding behavior of closed-cell metal foam with low density
Lu Zixing, Zhang Jialei
2009, 35(3): 318-321.
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Abstract:
It is an important means to simulate the deformation process of metal foam with low density numerically for investigating their mechanical behavior and failure. Based on the geometric model of Kelvin containing multiple cells, the finite element method was used to obtain the compressive yield streng...
Missile control systems design based on second order sliding mode theory
Chen Jie, Gu Wenjin, Zhou Shaolei
2009, 35(3): 322-325.
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As a novel nonlinear control method, over-load control has quickly developed in the field of missile control law design in the recent years, but during the design of the skid-to-turn(STT) supersonic cruise missile pitch channel control system based on over-load control, the system exits non-minimum ...
Two interval sculling compensation algorithm based on duality principle
Yu Yang, Zhang Hongyue
2009, 35(3): 326-329.
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Abstract:
The sculling compensation algorithms are designed generally using minimal error theory, under the typical sculling motion. The coning compensation algorithms can be designed using Goodman-Robinson finite rotations theory besides minimal error theory. An two intervals accurate sculling compensation a...
Multi-machine scheduling problem with multi-time windows: model and algorithm
Liu Wei, Meng Xin, Zheng Jianhua
2009, 35(3): 330-333.
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Abstract:
With regard to the multi-machine scheduling problem with multi-time windows for minimizing the cost,how to solve the question quickly and effectively remains to be a hard problem in combination optimization research field. Firstly two models were established to describe the simplified questions duri...
Mismatching judgment in simplex optimization for ICCP algorithm
Yang Yong, Wang Kedong
2009, 35(3): 334-337.
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Abstract:
Iterative closest contour point(ICCP) algorithm was applied into map aided navigation, in which simplex algorithm was used to estimate the optimal trace of vehicle. However, simplex algorithm was usually convergent at the local optimization so that there was mismatching or even diverging. The rule o...
Block diagram modeling and control of electro-hydrostatic actuator
Kang Rongjie, Jiao Zongxia, Wang Shaoping
2009, 35(3): 338-341.
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Abstract:
Power-by-wire (PBW) actuation is the future direction of flight control system in which the need for a central hydraulic system is eliminated. The electro-hydrostatic actuator (EHA) is a kind of PBW actuator that converts the electrical power into local hydraulic power and combines the benefits of t...
Parallel algorithm of anomalies detection in hyperspectral image with projection pursuit
Wang Wei, Zhao Huijie, Dong Chao
2009, 35(3): 342-346.
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Abstract:
Projection pursiut can extract non-Gaussian structure in hyperspectral data to reveal the anomalies information, but searching the best projection directions is a computational intensive task. To improve the process efficiency, a parallel process algorithm under cluster system was presented. The com...
On-spot camera calibration method based on flexible planar target
Yu Minglang, Wei Zhenzhong, Sun Junhu
2009, 35(3): 347-350.
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A flexible planar target method was proposed to perform on-spot camera calibration. In this method, only several characteristic points with known 3D coordinates are needed to be preset on the planar target, and among these preset characteristic points, the ones which are collinear could determine a ...
Numerical method to simulate rime ice accretions on an airfoil
Zhang Qiang, Cao Yihua, Li Dong
2009, 35(3): 351-355.
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Based on the Eulerian two-phase flow theory, a numerical method to simulate rime ice accretions on an airfoil has been developed. The semi-implicit method for pressure linked equations (SIMPLE) algorithm on a collocated grid was employed to solve the governing equations for the airflow. In order to ...
Entropy correction analyses for Roe scheme
Zhou Yu, Yan Chao
2009, 35(3): 356-360.
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Three types’ entropy fix formulations for the Roe scheme were analyzed in theory and assessed by three numerical tests which were shock tube problem, step flow and double Mach reflection. The results show that "Carbuncle phenomena" occurs when capturing strong shock because of the original Roe schem...
Experimental of effect of water mist nozzle injection pressure on fire extinguishing
Yang Lijun, Fu Qingfei, Wang Xiangdong, Liao Shengjie
2009, 35(3): 361-365.
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Abstract:
In order to investigate the effect of water mist nozzle to extinguish heptane fire under different injection pressure, a series of experiments were performed in an enclosed compartment of 4.6m×3.3m×4m with a certain type of water mist nozzle under various injection pressure. Thermocouples tree and g...
Technique of continuous auto-calibration of redundant strapdown inertial system
Lu Jiazhen, Zhang Chunxi, Zhu Lufeng
2009, 35(3): 366-370.
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Abstract:
A novel continuous auto-calibration technique was presented for redundant strapdown inertial navigation systems. Principles of the proposed technique were based on strapdown system error models, which indicated that velocity errors from the system could contain information related to inertial sensor...
Obstacle climbing analysis and simulation of wheel-legged robot
Chen Diansheng, Huang Yu, Wang Tianmiao
2009, 35(3): 371-375.
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A wheel-legged structure with insectival leg configuration in a ground mobile robot was presented in order to improve the terrain adaptability and obstacle climbing capability of the robot. An optimal wheel-legged configuration which enhances the movement stability of the robot was selected. The obs...
Paradox of set theory-universal logic
Du Guoping, Wang Hongguang, Li Na, Zhu Wujia
2009, 35(3): 376-379.
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Abstract:
A general formal language in which the value of formulas can be recursively defined can be given by a sextuple-model for n(2≤n≤n )-valued logic. It constitutes a universal logic system UL 1, which characterizes this kind of logic. Connectives like abstract negation, abstract implication and abstrac...
Avian radar system based on two scanning modes
Chen Weishi, Ning Huansheng, Li Jing, Mao Xia
2009, 35(3): 380-383.
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State of arts of researches on avian radar systems were introduced, including large avian radar system represented by avian hazard advisory system (AHAS) and airport-based avian radar system represented by Accipiter. An avian radar experimental system was built based on X-band marine radar, and its ...
Circuit for close-loop capacitive micro-accelerometers
Song Xing, Fang Jiancheng, Sheng Wei
2009, 35(3): 384-388.
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Abstract:

A circuit to detect the micro-differential capacitance of micro-silicon inertia sensors was designed,which can be successfully applied in the capacitive MEMS(micro electro mechanical system) accelerometer,especially in the sandwich structure MEMS accelerometers with differential capacitance．The good...
Numerical simulation of laser bending process
Wang Xiufeng, Guo Xiaoli, Chen Guangnan, Jurgen Silvanus
2009, 35(3): 389-392.
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Laser bending process was numerically simulated by the FEM software of MSC.Marc. The experiment results were compared with the simulation ones, and the temperature and displacement curves of experiment and calculation were in good accordance. The comparison indicates that, calculated model is regard...

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