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2014 Vol. 40, No. 9

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Space-time coding in asynchronous dual-satellite MIMO systems
Zhao Danfeng, Wang Yang, Liao Xi
2014, 40(9): 1165-1169. doi: 10.13700/j.bh.1001-5965.2013.0602
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The received signals are asynchronous due to the different transmission delays in the dualsatellite multiple-input multiple-output (MIMO) system. Aiming to solve the asynchronism problem, a time reversal full-rate full-diversity space time coding scheme was proposed. The space-time code words were i...
Solution region synthesis theory and method of six-bar linkages with 4-position motion generation
Han Jianyou, Cui Guangzhen, Yang Tong
2014, 40(9): 1170-1175. doi: 10.13700/j.bh.1001-5965.2013.0590
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According to the Stephenson-Ⅱ six-bar linkage with 4-position motion generation, the concept and equation of generalized Burmester curves based on Burmester curve was proposed. The solution region method was given. Firstly, this method required to get solution curves meeting requirements. Then the s...
Rolling element bearing fault diagnosis based on spectral kurtosis and bi-spectrum
Zheng Hong, Zhou Lei, Yang Hao
2014, 40(9): 1176-1182. doi: 10.13700/j.bh.1001-5965.2013.0628
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Aiming to deal with the bearing fault diagnosis problem in the case of strong background noise being contained in the collected vibration signals, a rolling element bearing fault diagnosis method based on spectral kurtosis and bi-spectrum was proposed. Spectral kurtosis was used to indicate the freq...
Navigation method using a single detector based on the observation of X-ray pulsar in different time interval
Yang Bo, Zhang Rui, Sun Hui, Xu Fan
2014, 40(9): 1183-1188. doi: 10.13700/j.bh.1001-5965.2013.0568
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Traditional X-ray pulsar navigation system needs to track more than 3 pulsars at the same time, which will increase the effective load quality of the navigation system. Aiming at the phenomenon that the pulsars cannot be seen all the time by vehicles because of the earth shadow and the detector's vi...
Preparation and atomic oxygen resistance of hybrid polyimide
Zhao Xiaohu, Duan Lingze, Zhao Yizhi
2014, 40(9): 1189-1194. doi: 10.13700/j.bh.1001-5965.2013.0595
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Atomic oxygen (AO), the predominant components and the most active species in low earth orbit atmosphere, can cause the erosion and degradation of spacecraft materials. To improve the AO-resistance of the resin, Tetraethyl orthosilicate (TEOS) was added into the polyimide (PI) matrix, and then the i...
Real-time relative orbit determination for formation flying satellites using adaptive filtering
Qin Xianping, Ren Xia, Yang Yuanx
2014, 40(9): 1195-1199. doi: 10.13700/j.bh.1001-5965.2013.0589
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A method of real-time relative orbit determination for formation flying satellites using adaptive filtering was proposed. Real-time relative orbit of two gravity recovery and climate experiment (GRACE) satellites was computed by using the global positioning system (GPS) data observed from December 9...
Simulation of heating control law of electro-thermal deicing of helicopter rotor blade
Fu Jianping, Zhuang Weiliang, Yang Bo, Chang Shinan
2014, 40(9): 1200-1207. doi: 10.13700/j.bh.1001-5965.2013.0551
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The work mechanism of the electro-thermal anti/deicing system is very complex as it is related to the coupled heat transfer between the electro-thermal and the external heat flux, i.e., the convective heat transfer and phase transition heat transfer, and the data available is extremely limited. In o...
Real-time evaluation method for stability of fault prognostic algorithm
Yu Jinsong, Liu Hao, Zhang Ping, Wan Jiuqing
2014, 40(9): 1208-1212. doi: 10.13700/j.bh.1001-5965.2013.0532
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An evaluation method of fault prognostic algorithm from the perspective of stability was proposed for the existing evaluation metrics for fault prognostic algorithm were subjected to the actual remaining useful life. Based on studying upon the health degradation process of the system under test, acc...
Extraneous torque analysis of pneumatic load simulator
Wei Qiong, Wu Shuai, Jiao Zongxia, Yu Hao
2014, 40(9): 1213-1218. doi: 10.13700/j.bh.1001-5965.2013.0553
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In order to analyze the formation and influence factors of the extraneous torque of pneumatic load simulator, the working principle, structure diagram and experimental platform of the pneumatic load simulator were introduced and the mathematical model of the pneumatic load simulator was deduced. The...
Equilibrium characteristics and stability analysis of helicopter-slung-load coupling system
Cao Long, Cao Yihua, Li Chunhua
2014, 40(9): 1219-1224. doi: 10.13700/j.bh.1001-5965.2013.0561
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A nonlinear dynamical model of the helicopter-slung-load coupling system was presented, based on single mass-point hypothesis. Under this hypothesis, the consideration of the slung-load brought in extra degrees of freedom and constraints, which made the equations of motion increased by 4 orders, and...
Design and analysis on dynamic characteristic of servo mechanism’s load simulation system
Zhang Peng, Fu Yongling, Guo Yanqing, Qi Xiaoye
2014, 40(9): 1225-1230. doi: 10.13700/j.bh.1001-5965.2013.0571
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In view of a load simulating problem of servo mechanism in launch vehicles, a new load simulator device was present, which could simulate the inertia, friction, elastic, servo mechanism mounting rigidity and flexibility characteristics of engine nozzle by the mechanical structures. The complete math...
Identification method for defect-introducing fine-grained software changes
Yuan Zi, Yu Lili, Liu Chao
2014, 40(9): 1231-1238. doi: 10.13700/j.bh.1001-5965.2013.0576
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Software defects were introduced into software system by software changes in the software development process. A new method to identify defect-introducing fine-grained changes was proposed to improve the efficiency of defect finding and reduce the cost of manual inspection. This method was based on ...
Simulation of non-Gaussian random vibration
Xu Fei, Li Chuanri, Jiang Tongmin, Rong Shuanglong
2014, 40(9): 1239-1244. doi: 10.13700/j.bh.1001-5965.2013.0579
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Traditionally, only Gaussian signal can be produced by random vibration controller using power spectral density (PSD). However, actual vibration is usually non-Gaussian, which makes random vibration testing unable to simulate the failure mode that products will experience. Simulation of non-Gaussian...
Improved SST-DES in numerical simulation of mild separation
Wang Xiangyu, Li Dong
2014, 40(9): 1245-1249. doi: 10.13700/j.bh.1001-5965.2013.0587
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In the numerical simulation of mild separation by detached eddy simulation (DES) based on shear stress transport (SST) turbulence model, too large turbulent viscosity may translate from the upstream Reynolds averaged navier stokes (RANS) zone to the downstream large eddy simulation (LES) zone by con...
Flight envelope quantitative division of hypersonic vehicle based on gap metric
He Chaofan, Yang Lingyu, Li Xin, He Niannian
2014, 40(9): 1250-1255. doi: 10.13700/j.bh.1001-5965.2013.0592
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Considering that the existing flight envelope division methods of hypersonic vehicle were too subjective and complicated, a new division method was introduced based on the theory of gap metric. The theory of gap metric was introduced, and the computing method of gap between linear systems was given....
Friction parameter identification and compensation for electro-hydraulic load simulator
Guo Yanqing, Fu Yongling, Zhang Peng, Chen Juan
2014, 40(9): 1256-1262. doi: 10.13700/j.bh.1001-5965.2013.0604
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Due to the interference of friction while controlling the electro-hydraulic load simulator, a new model with the consideration of friction was presented. In this model, the test sample was simplified as retractable rigid rods and LuGre model was used to describe the friction. The friction coefficien...
Simulation of droplet impingement characteristics of spinner based on Eulerian method
Wu Menglong, Chang Shinan, Leng Mengyao, Wang Chao
2014, 40(9): 1263-1267. doi: 10.13700/j.bh.1001-5965.2013.0559
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Based on Eulerian theory, the droplet impingement characteristics of the spinner were simulated. The droplet impingement characteristics of the spinner were achieved by calculating the droplets' flow field with numerical diffusion. The rotate speed impact on the droplet impingement characteristics o...
Task allocation in cooperative air combat based on multi-agent coalition
Diao Xinghua, Fang Yangwang, Xiao Bingsong, Mao Donghui
2014, 40(9): 1268-1275. doi: 10.13700/j.bh.1001-5965.2013.0564
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Multi-agent coalition formation theory was used to analyze the task allocation of multi-aircraft against multi-target in net warfare combat. The process of cooperative air combat task allocating was just the process of coalition formatting. First, the whole striking task to all the targets was separ...
Sliding mode adaptive synchronization for a class of fractional-order chaotic systems with uncertainties
Yu Mingzhe, Zhang Youan
2014, 40(9): 1276-1280. doi: 10.13700/j.bh.1001-5965.2013.0614
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A fractional-order sliding mode adaptive control approach was introduced to synchronize chaos of a class of fractional-order chaotic systems with uncertainties. The effects of model uncertainties and external disturbances were fully taken into account. An appropriate robust fractional sliding mode a...
Trajectory optimization for hypersonic gliding vehicle considering stochastic disturbance
Guo Haifeng, Huang Changqiang, Ding Dali, Xiao Hong
2014, 40(9): 1281-1290. doi: 10.13700/j.bh.1001-5965.2013.0755
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To solve the problem of the reentry trajectory optimization for the hypersonic gliding vehicle with stochastic disturbance, the numerical method of trajectory optimization based on the generalized polynomial chaos was put forward. The sampling space was formed by the sampling of stochastic variable ...
Inverse dynamic attitude control for re-entry vehicle based on output redefinition
Shi Linan, Zhang Ran, Li Zhaoying, Li Huifeng
2014, 40(9): 1291-1298. doi: 10.13700/j.bh.1001-5965.2014.0098
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Internal dynamics occurs in the lateral/directional motion of re-entry vehicle with two body flaps under the condition of high angle of attack. A method of inverse dynamic control based on output redefinition technique was presented. The output-redefinition technique was used to locally stabilize th...
Effect of buckling mode on performance of post-buckled composite stringer-stiffened panels with debond
Xu Rongzhang, Guan Zhidong, Liu Lu, Zhang Nan
2014, 40(9): 1299-1304. doi: 10.13700/j.bh.1001-5965.2013.0605
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Because of the proximity of first and second buckling load, some specific stringer-stiffened panels will exhibit different buckling modes under uniaxial compression load, which causes their post-buckling behavior strikingly different. Test and numerical calculation was conducted to study this phenom...
Landmark fixed high-precision binocular visual navigation method
Zhang Yang, Wang Xinlong
2014, 40(9): 1305-1311. doi: 10.13700/j.bh.1001-5965.2013.0588
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Autonomous navigation is a crucial technology in the field of unmanned aerial vehicle (UAV), intelligent robots and smartcars. To overcome shortages in traditional visual navigation methods, a landmark fixed high-precision binocular visual autonomous navigation method, based on the camera egomotion ...
Bayesian evaluation method for binomial system reliability growth
Yuan Kun, Li Xiaogang
2014, 40(9): 1312-1316. doi: 10.13700/j.bh.1001-5965.2013.0599
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Concerning the multi-stages field information during the process of product development, a Bayes evaluation method based on the new Dirichlet prior distribution was proposed. This method made use of discrete army material system analysis activity (AMSAA) model to describe the dynamic change of relia...
Image retrieval algorithm based on SIFT, K-means and LDA
Wang Yulei, Bi Shusheng, Sun Minglei, Cai Yueri
2014, 40(9): 1317-1322. doi: 10.13700/j.bh.1001-5965.2013.0601
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Image retrieval is a problem in the field of information retrieval. An algorithm was developed for image retrieval based on scale invariant feature transform (SIFT), K-Means and latent dirichlet allocation (LDA). This algorithm was mainly divided into two stages. The preparations obtained the classi...

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