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2014 Vol. 40, No. 6

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Integrated guidance and control design for a class of missile with networked packet dropouts
Wang Qing, Qi Chengdong, Dong Chaoyang
2014, 40(6): 721-726. doi: 10.13700/j.bh.1001-5965.2013.0408
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An integrated guidance and control (IGC) algorithm for a class of missile with networked packet dropouts was researched. Considering that a number of ground-based radars were used to observe on the target simultaneously and the target information was shared with the missile through the network. Netw...
Optimization model of VTS radar station location problem
Cao Desheng, Lü Jing, Ai Yunfei, Zhang Lili
2014, 40(6): 727-731. doi: 10.13700/j.bh.1001-5965.2013.0706
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The location result of vessel traffic services (VTS) radar station has an important influence on the normal functioning of the entire system. The multi-level fuzzy comprehensive evaluation method was used to select the candidate points of radar stations. Based on the set covering model, a dual-objec...
Dynamic critical friction of landing gear shock absorber binding
Wei Xiaohui, Song Xiaochen, Li Lirong, Nie Hong
2014, 40(6): 732-736. doi: 10.13700/j.bh.1001-5965.2013.0418
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In order to explore the design criterion of landing gear shock absorber binding, based on the method in aircraft design manual, takeoff and landing system design, the static and dynamic critical friction coefficients of a certain unmanned aerial vehicle's main landing gear were analyzed. The analysi...
Development for portable system of solar cell parameters acquisition
Xiao Wenbo, Zhuo Rusheng, Cao Qijun, Cao Huaxiang
2014, 40(6): 737-741. doi: 10.13700/j.bh.1001-5965.2013.0428
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In order to fulfill rapid and accurate acquisition of the solar cell photoelectric characteristic eleven parameters (including the photocurrent, reversed saturation current, ideality factor, series resistance, shunt resistance, short circuit current, open circuit voltage, maximum output power, best ...
Dent resistance test method and system for auto-body panel
Wang Liang, Li Dongsheng, Chen Lianfeng, Li Tao
2014, 40(6): 742-748. doi: 10.13700/j.bh.1001-5965.2013.0395
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For the auto-body panel parts characteristics, a test method of dent resistance was introduced. Based on the test method, an automatic tester system for dent resistance test was developed. The tester indenter can be adjustable with arbitrary posture in space and load reliably by integrating "5-axis ...
2D/3D video conversion method based on piece-wise structure from motion
Liu Wei, Li Gongyan, Ding Kai, Wu Yihong
2014, 40(6): 749-755. doi: 10.13700/j.bh.1001-5965.2013.0437
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To alleviate the shortage of 3D media sources, a piece-wise structure from motion method was designed to provide depth cues for the 2D/3D video conversion. Videos were decomposed into subsequences of different scenes and key frames of non-degenerate were extracted in each subsequence with optimizati...
Short takeoff performance optimization based on simulation model
Wu Dawei, Li Hanbing, Li Shu, Hu Jizhong
2014, 40(6): 756-761. doi: 10.13700/j.bh.1001-5965.2013.0420
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Short takeoff performance is important for all kinds of special aircrafts because they can accommodate more pay load and get higher safety during short takeoff and landing than vertical takeoff and landing. Short takeoff simulation model was established for a small unmanned tilt rotor aircraft based...
Fuzzy robust tracking control within full envelope for unmanned aerial vehicle
Liu Zhi, Wang Yong
2014, 40(6): 762-768. doi: 10.13700/j.bh.1001-5965.2013.0396
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The fuzzy robust tracking controller within full envelope of unmanned aerial vehicle (UAV) was proposed for the problems of wide variation of aerodynamic characteristics, experiencing parameter uncertainty and external disturbances during the flight in large envelope. With fuzzy c-means clustering, ...
Oil gap loss and mechanical efficiency of axial piston electro-hydraulic pump
Li Zhufeng, Shao Yunbin, Fu Yongling, Fan Dianliang
2014, 40(6): 769-774. doi: 10.13700/j.bh.1001-5965.2013.0438
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From the innovation perspective, the structure and working process of axial piston EHP were described. With various mechanical losses analyzed, the mechanical efficiency calculation model of EHP was established and the oil gap loss as well as mechanical efficiency varying with speed, pressure and te...
Multi-type ribs of turbine blade modeling method fitting bowed-twist wall
Yang Jiong, Xi Ping, Hu Bifu, Zhang Baoyuan
2014, 40(6): 775-781. doi: 10.13700/j.bh.1001-5965.2013.0440
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Considering the geometric features of ribs in a bowed-twist cooling passage, a modeling method based on equidistant was presented. It generated rib tools, which was a tablet trimmed by equidistant surfaces of walls in intracavity of blade and pressure slide or suction slide, and then conducted model...
Rapid structure design and automated adjustment of civil aircraft fuselage
Chen Bai, Luo Mingqiang, Wu Zhe
2014, 40(6): 782-787. doi: 10.13700/j.bh.1001-5965.2013.0391
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To improve the quality and efficiency of civil aircraft design, it would be better to take structure design into account earlier, instead of beginning structure design in later preliminary design phase or detail design phase. A method to implement fuselage structure rapid design, modeling, and autom...
Experiments of separated structure mechanical vapor compression system
Li Yulong, Wu Hong, Qiao Mai, Chen Jiang
2014, 40(6): 788-791. doi: 10.13700/j.bh.1001-5965.2013.0393
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Due to the disadvantages of the traditional mechanical vapor compression (MVC) system, a new MVC system which has the separated structure was presented. The new system was studied experimentally on a single effect system with a rated capacity of 1.5 m3/d. The experiment system consists of two sets o...
Functional principal component regression for continuous spectra data
Huang Lele, Wang Huiwen, Zhu Jia
2014, 40(6): 792-796. doi: 10.13700/j.bh.1001-5965.2013.0409
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The method treating the smooth spectra as functional data was proposed and regression analysis was carried out based on functional principal components of spectra curves to obtain regression models without discretization. In modeling, the derivative curves of spectra can be introduced and bootstrap ...
Experimental investigation on critical stall stage of counter-rotating fan at different speed ratio
Wang Zhuoqi, Lu Lipeng, Yuan Wei, Song Xizhen
2014, 40(6): 797-802. doi: 10.13700/j.bh.1001-5965.2013.0425
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Theoretical analysis on a low-speed counter-rotating fan shows that the critical stall stage is determined by two parameters, one is the critical stall mass flow coefficient of each rotor, the other is the real mass flow coefficient of the two rotors at stall point. An experiment was taken to confir...
UAV lateral guidance law for tracking of maneuvering target
Wang Shulei, Wei Ruixuan, Guo Qing, Wei Wenjie
2014, 40(6): 803-809. doi: 10.13700/j.bh.1001-5965.2013.0453
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The existing lateral guidance law for standoff target tracking either converges slowly or has a large steady state error when tracking a maneuvering target. The reference point guidance (RPG) for path following problem was modified as lateral guidance law of unmanned aerial vehicle (UAV) for trackin...
Fast calculation method for helicopter reachable domain in forward flight
Zhuang Nanjian, Luo Zhangping, Ren Yiru, Xiang Jinwu
2014, 40(6): 810-814. doi: 10.13700/j.bh.1001-5965.2013.0632
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Helicopter reachable domain can be used to generate airspace security situation and improve the helicopter safety level in a low-altitude complex environment. In order to meet the demand on real-time performance and accuracy, a fast calculation method was proposed. The helicopter control zone was co...
Shape optimization of supercavitating torpedo
Li Fuyuan, Zhang Yuwen, Teng Penghua, Zhang Yi
2014, 40(6): 815-818. doi: 10.13700/j.bh.1001-5965.2013.0444
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In order to optimize supercavitating torpedo shape and get the maximum vehicle volume under the same cavitation number, the formula for the best radius of the vehicle under the optimizing shape was deduced based on the empirical formula, by simplifying the cavity shape of disk cavitator and analyzin...
Thermal stress induced composite laminate delamination analysis and experiment verification
Ran Zhiguo, Yan Ying, Li Jianfeng, Cong Qiang, Chen Haifeng, Kuang Naihang
2014, 40(6): 819-823. doi: 10.13700/j.bh.1001-5965.2013.0485
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To solve thermal stress induced delamination in composite laminates that used in flying vehicles, experimental tests and numerical analysis were carried out. Bilinear controlled cohesive elements were adopted to simulate the delamination in laminates, quadratic failure criterion was used to predict ...
Variable-sampling-rate observer for speed estimation of servo motors with optical encoders
Zhang Jing, Wu Zhong, Huang Liya
2014, 40(6): 824-828. doi: 10.13700/j.bh.1001-5965.2013.0384
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Incremental encoders are heavily used as speed measurement sensors in servo motor systems. Speed estimation in these applications is frequently affected by system vibrations and quantization errors. To avoid this problem, a variable-sampling-rate observer was proposed. Instead of numerical different...
Self-adaptive Newmark method of variable-mass beam dynamic system
Wang Yunan, Xing Yufeng
2014, 40(6): 829-833. doi: 10.13700/j.bh.1001-5965.2013.0400
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Variable-mass beam was used to model launch vehicle. Firstly the results of a spring-variable-mass ball system were compared with the analytical solutions. Then by using an example of a constant-mass beam, the parameters of the self-adaptive Newmark method were determined. At last the practical proc...
Compression performance of composite stiffened panel after stiffener repair
Zhao Chuang, Nie Hengchang, Guo Xia, Guan Zhidong
2014, 40(6): 834-838. doi: 10.13700/j.bh.1001-5965.2013.0431
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Subjected to compressive load, stiffener injury often causes serious failure of stiffened composite panels. In consideration of stiffener-skin debonding, delamination in web and damage to upper flange, corresponding repair programs were designed and necessary specimens were manufactured. In order to...
Single event charge collection in CMOS device
Dong Gang, Feng Guoqiang, Chen Rui, Han Jianwei
2014, 40(6): 839-843. doi: 10.13700/j.bh.1001-5965.2013.0435
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Three dimensions technology computer aided design (3D TCAD) simulation was used to study single event transient (SET) in an invert with 90 nm bulk complementary metal oxide semiconductor (CMOS) technology. The charge transport and charge collection mechanism were analyzed in both positive channel-me...
Design approach of nonlinear flight control law for fighter at high angle-of-attack based on mission-oriented flying qualities method
Long Jinwei, Pan Wenjun, Wang Lixin, Wang Zhigang
2014, 40(6): 844-848. doi: 10.13700/j.bh.1001-5965.2013.0436
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To solve the problem of maneuver control for fighters at high angle-of-attack (AOA), the model reference dynamic inversion (MRDI) control law was designed, based on the nonlinear dynamic inversion controllers utilizing angular rates as commands, ideal reference models representing the desired flying...
Experiment on surface integrity of side milling titanium TB6
Zhou Zitong, Chen Zhitong, Xiong Xiyao, Xu Yiping
2014, 40(6): 849-854. doi: 10.13700/j.bh.1001-5965.2013.0394
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The surface integrity (surface topography, surface roughness, work hardening) of TB6 after side milling was studied based on the minimum data set. The results show that it's the feed engagement (fz) that influences the surface topography most and high fz may cause scale on the milled surface. fz is ...
Improved battery state-of-charge estimation based on Kalman filter
Xu Ying, Shen Ying
2014, 40(6): 855-860. doi: 10.13700/j.bh.1001-5965.2013.0414
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Set in the research in the battery management system of electric vehicle, the state of charge, as well as the main factors to their nonlinear dynamic relationship, was illustrated and a second-order RC equivalent cell model was established based on the key technology of battery state of charge estim...

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