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2014 Vol. 40, No. 8

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Enhancement of electromechanical coupling for piezoelectric system and suppression of multimode vibration
Li Lin, Liu Xue
2014, 40(8): 1011-1016. doi: 10.13700/j.bh.1001-5965.2013.0502
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Enhancing the electromechanical coupling of a piezoelectric system is an effective way to suppress the vibration of the system by the piezoelectric shunt technique. A method was proposed which can increase the multiple-mode electromechanical coupling for a piezoelectric system. From the research of ...
Classification of inverse problem of solid launch vehicle flight dynamics
Li Shipeng, Liang Xinxin, Rong Jingjing, Zhang Yan
2014, 40(8): 1017-1021. doi: 10.13700/j.bh.1001-5965.2013.0516
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To decrease the analytical difficulty and the solving complexity of the inverse problems in the development of the solid launch vehicle flight dynamics, the classification of inverse problems was investigated. By studying the characteristics of the solutions the inverse problems were divided into th...
Material spectral emissivity measurement optimized by multi-spectral temperature measured
Yang Yongjun, Wang Zhongyu, Zhang Shukun, Zhang Xuecong
2014, 40(8): 1022-1026. doi: 10.13700/j.bh.1001-5965.2013.0504
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The sample surface temperature is difficult to measure in the infrared spectral emissivity measurement of high-temperature material. Optimized temperature measurement method was proposed by multi-spectral method using the spectral radiation energy data measured by spectrometer. The effect of emissiv...
Reliability analysis modeling of manufacturing systems based on process quality data
He Yihai, Shen Zhen, Yin Chao
2014, 40(8): 1027-1032. doi: 10.13700/j.bh.1001-5965.2013.0546
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Aiming at the limitation of traditional reliability analysis of manufacturing systems neither considered product quality, nor implemented accurately comprehensive modeling, a reliability analysis modeling of manufacturing systems based on process quality data was presented. Firstly, the concept of r...
Differential correction technique to the rotation error in autonomous navigation constellation
Meng Fanzhi, Shi Pengliang, Ou Gang
2014, 40(8): 1033-1037. doi: 10.13700/j.bh.1001-5965.2013.0544
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The rotation of the autonomous navigation constellation is unobservable while using inter-satellite measurements only. Once the rotation occurs, errors will be introduced to the positioning results of ground users. The positioning error model of ground users was established to solve this problem. Ac...
Head pose estimation framework based on feature point detection
Qiao Tizhou, Dai Shuling
2014, 40(8): 1038-1043. doi: 10.13700/j.bh.1001-5965.2013.0530
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In order to improve the precision of head pose estimation with random regression forest, an analysis framework based on feature point recognition was proposed for head pose estimation. In view of invalid votes disturbance, this framework recognized head position point and direction point to avoid ac...
Topological space construction of flight risk probabilities during wake encountering
Xue Yuan, Xu Haojun, Li Qiang, Hou Shifang, Liu Shijie
2014, 40(8): 1044-1054. doi: 10.13700/j.bh.1001-5965.2013.0533
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Under the background of increasing wake vortex problems, wake risk probability topology was built using complex human-machine-environment theory and multivariate extreme value theory. First, three-dimensional wake extreme parameters required for assessing the risk were extracted based on Monte Carlo...
Windage measurements for rotating disc with protrusions
Zhang Da, Luo Xiang, Xu Guoqiang, Tian Shuqing
2014, 40(8): 1055-1059. doi: 10.13700/j.bh.1001-5965.2013.0536
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A new test rig was performed to investigate the windage torque of the rotating disc with protrusions or roughness on the rotor surface. The new measurement method was verified accurately with the comparison between the free disc data and the correction in open literatures. Six configurations of prot...
Design of a controller for morphing aircraft based on backstepping/RHO
Chen Wei, Lu Jingchao, Wang Xiaoguang, Zhang Weiguo
2014, 40(8): 1060-1065. doi: 10.13700/j.bh.1001-5965.2013.0510
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In order to ensure the flight stability of morphing aircraft in the morphing process, a parallel retrofit controller was proposed. The nominal controller was designed by the backstepping technique, which was used to provide the basic flight stability as well as the tracking performance. The nonlinea...
Situational awareness model based on attention allocation
Liu Shuang, Wanyan Xiaoru, Zhuang Damin, Lü Shichen
2014, 40(8): 1066-1072. doi: 10.13700/j.bh.1001-5965.2013.0512
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To predict the changes of situation awareness for the pilot, a new quantitative situation awareness model and solving method, which considered the influence of information importance on situation awareness, the characteristics of human cognition and the Bayesian conditional probability theory, was p...
Single event upset mitigation testing of SRAM-based FPGAs
Jiang Yuguang, Han Jianwei, Zhu Xiang, Cai Minghui
2014, 40(8): 1073-1077. doi: 10.13700/j.bh.1001-5965.2013.0514
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Pulsed laser and heavy ions irradiation experiment was applied to study the effectiveness of the mitigation techniques of triple modular redundancy(TMR) and dynamic scrubbing for the Virtex-Ⅱ XC2V1000. When both dynamic scrubbing and TMR methods were used, the design of data encryption standard (DES...
3-D back projection and matching for ship recognition from SAR images
Gu Dandan, Xu Xiaojian
2014, 40(8): 1078-1084. doi: 10.13700/j.bh.1001-5965.2013.0539
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A new technique for ship recognition from synthetic aperture radar (SAR) images was proposed. First, a method of projecting SAR image back to the three-dimensional (3-D) target space was developed to obtain the 3-D distribution of the observed target scatterers, namely the 3-D back projection scatte...
Assessment of shock capturing methods for numerical simulations of compressible turbulence with shock waves
Qu Feng, Yan Chao, Yu Jian, Chen Jiayang
2014, 40(8): 1085-1089. doi: 10.13700/j.bh.1001-5965.2013.0556
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The direct numerical simulation (DNS) and large eddy simulation (LES) of turbulent flows raise challenges to the numerical schemes, especially when they are combined with shock waves. The two demands of the schemes seem to be contrary: the simulation of small turbulence scales requires non-dissipati...
Hybrid time synchronization algorithm for avionics clouds
Li Zheng, Li Qiao, Zhao Luxi, Xiong Huagang
2014, 40(8): 1090-1094. doi: 10.13700/j.bh.1001-5965.2014.0038
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To meet the time synchronization requirement in avionics clouds, corresponding models were built including network model, clock model and delay model. Two synchronization operation procedures were provided for nodes in different network environments. The receiving and processing delay of the time sy...
Orbit determination and analysis for Chang’E-2 asteroid exploration
Cao Jianfeng, Hu Songjie, Liu Lei, Liu Yong, Huang Yong, Li Peijia
2014, 40(8): 1095-1101. doi: 10.13700/j.bh.1001-5965.2013.0472
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Chang'E-2(CE-2) performed China's first asteroid exploration from April 15th, and took 243 days to fly-by with the asteroid Toutatis on December 13rd, 2012. Because of no navigation camera onboard, the navigation for CE-2 is dependent on the ground-based unified S-band (USB) and very long baseline i...
Group targets tracking algorithm based on strong tracking filter and improved weighted method
Li Zhenxing, Liu Jinmang, Bai Dongying, Guo Xiangke
2014, 40(8): 1102-1108. doi: 10.13700/j.bh.1001-5965.2013.0650
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To improve the estimation performance of the existing interactive multiple models tracking algorithm for group targets, an improved group tracking algorithm was proposed. Firstly, by using the adaptive algorithm of model transition probability, the optimization of real-time matching for tracking mod...
Convergence of fuzzy reliability models and an improved cut-set distribution
Zhang Meng, Lu Shan
2014, 40(8): 1109-1115. doi: 10.13700/j.bh.1001-5965.2014.0026
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The basic fuzzy reliability model of mechanical structures based on cut-set method has been applied to various engineering problems, and some specific models have been formed, such as stress-strength interference model, fatigue life model and avoid-resonance model. A convergence theorem of the model...
Improvement and application for group fuzzy analytic hierarchy process
Li Liang, Gong Guanghong, Chen Jinlei, Liu Qiongjun
2014, 40(8): 1116-1120. doi: 10.13700/j.bh.1001-5965.2013.0469
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In order to solve the consistency question of the paired comparison matrix which is constructed based on expert subjective opinion in analytic hierarchy process (AHP), an improved group fuzzy analytic hierarchy process (IGFAHP) was proposed. The AHP was extended to the field of group decision and fu...
Multi-resolution modeling of terrain based on wavelet analysis
Wang Jiangyun, Zeng Qiong, Wang Huixia
2014, 40(8): 1121-1126. doi: 10.13700/j.bh.1001-5965.2013.0473
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Through wavelet analysis of signal, multi-resolution modeling of digital elevation model (DEM) for the purpose of improving operational efficiency and storage efficiency was studied. According to the characteristics of DEM, on the base of Mallat's multi-resolution analysis (MRA) algorithm, a method ...
Design of a novel folding wing mechanism
Bao Xiaoxiang, Zhang Yunfei, Yang Xiaoshu
2014, 40(8): 1127-1133. doi: 10.13700/j.bh.1001-5965.2013.0462
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In order to reduce the spanwise size of some aircraft (such as shipboard aircraft, unmanned aerial vehicle, flying car and so on) for saving the storage and transportation space, a novel folding wing mechanism was designed. It consists of three components (an inboard wing, a middle wing and an outbo...
Novel method for predicting SPE flux levels based on GM(1,1) model and grey interval predictions
Wang Zhongyu, Li Qiang, Yan Hu, Wang Qian
2014, 40(8): 1134-1142. doi: 10.13700/j.bh.1001-5965.2013.0540
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Solar proton event (SPE) is the main source interfering with solar-terrestrial space, large proton event could affect the reliability of on-orbit space station experimental facilities, and sometimes it even threatens the safe operation of space station. An SPE predicting method which is based on GM(...
Gradual lightweight method of three dimensional prototypes for digital technical support
Bai Jinpeng, Liu Hu, Wu Zhe, Wang Zhenwei, Xue Jing
2014, 40(8): 1143-1148. doi: 10.13700/j.bh.1001-5965.2013.0509
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Intuitionistic three dimensional (3D) models can improve the efficiency and accuracy of civil airliner's distant maintenance support, but due to the fact that models' data size generated in computer aided design systems is usually quite huge, it is a sever challenge to make a lightweight 3D digital ...
Extracting process of stratospheric airship envelop fabric fiber
Meng Junhui, Zhang Yanbo, Lü Mingyun
2014, 40(8): 1149-1153. doi: 10.13700/j.bh.1001-5965.2013.0538
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Either altitude change or temperature fluctuation will cause expanding difference between the internal and external pressure on envelop of the stratospheric airship. Yarn extraction in the load-carrying ply, a microscopic process of envelop tearing, is crucial for measuring the overall pressure-proo...
Inter-stage imbalance analysis of two-stage low hysteresis brush seal
Wen Long, Wang Zhili, Ding Lei, Liu Jian, Hu Guangyang, Chen Conghui
2014, 40(8): 1154-1159. doi: 10.13700/j.bh.1001-5965.2013.0523
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The flow field of a two-stage low hysteresis brush seal with certain structure was computed with porous medium model. The relationship between seal installation angles, front and back plate gap clearance height of the second stage and partial pressure ratio were also analyzed. Based on cantilever be...
Post-evaluation index system for aero-engine R & D capacity building projects
Xu Chunrong, Ren Wenjing, Zhou Hong
2014, 40(8): 1160-1164. doi: 10.13700/j.bh.1001-5965.2013.0626
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According to the specific characteristics of R & D capacity building projects for aero-engines, and based on a two-stage process, a specific project evaluation index system was proposed for the post-evaluation of the aero-engine R & D capacity building projects. Firstly, a primary evaluation...

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