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2016 Vol. 42, No. 10

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Volume 42 Issue102016
2016 Year 42 Volume 10 Issue E-journal
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Application of synthetic aperture focusing technique to defect quantification for immersion ultrasonic testing
ZHOU Zhenggan, ZHOU Jianghua, ZHANG Kuanshuang, MA Liyin, SUN Guangkai
2016, 42(10): 2017-2023. doi: 10.13700/j.bh.1001-5965.2015.0601
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Among the common defect quantification methods for immersion ultrasonic testing, some are high cost while others have relatively large quantitative error. Given the problem, a new 6 dB drop defect quantification method based on frequency domain synthetic aperture focusing technique (FSAFT-DQM) was s...
Power dispatch of actuator of aircraft based on improved particle swarm optimization algorithm
SHI Shan, LIU Depeng, LI Chengmao
2016, 42(10): 2024-2030. doi: 10.13700/j.bh.1001-5965.2015.0708
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In view of the large amount of electric energy waste caused by the small system load of aircraft electromechanical actuator, an electromechanical actuator system is designed. In order to make the system work in the near optimal efficiency, according to the nonlinear relationship between motor effici...
Influence of copper particle pollution on transformer oil kinematic viscosity
CHEN Bin, HAN Chao, LIU Ge
2016, 42(10): 2031-2037. doi: 10.13700/j.bh.1001-5965.2015.0628
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Copper particle pollution in the transformer oil is easy to affect the physical and chemical properties of the oil, and even leads to major accidents. On the basis of ISO4406：1999, 24 groups of samples of different pollution particles containing copper were made up, and the kinematic viscosity (40℃)...
Effect of surface roughness on flow transition and heat transfer of turbine blade
LI Hongyang, ZHENG Yun
2016, 42(10): 2038-2047. doi: 10.13700/j.bh.1001-5965.2015.0659
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For the purpose of researching the effect of surface roughness on flow transition and heat transfer of turbine blade, a roughness modification method for γ-Reθ transition model was proposed through self-developed CFD code. Verification was conducted referring to the experimental data of flat plate a...
Dynamic modeling and key error sources analysis of magnetically suspended sensitive gyroscopes
XIN Chaojun, CAI Yuanwen, REN Yuan, MIAO Cunxiao, ZHANG Liyuan
2016, 42(10): 2048-2058. doi: 10.13700/j.bh.1001-5965.2015.0650
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The mathematical model of a new magnetically suspended sensitive gyroscope (MSSG) with rotor of double spherical envelope surfaces is established based on rotor dynamics, and the key error sources of the gyro in sensing angular rate are analyzed theoretically. First, structural features and sensing ...
Numerical study on nonlinear characteristics of Rayleigh-Taylor instability
KANG Ning, LI Yikai, HE Xu
2016, 42(10): 2059-2068. doi: 10.13700/j.bh.1001-5965.2015.0667
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The research on the nonlinear dynamics of Rayleigh-Taylor (RT) before mainly focused on deducing and measuring the constant penetration velocity of the bubble and had little detailed analysis of the nonlinear dynamic characteristics in the liquid spike region. An accurate numerical simulation of the...
Performance analysis on structural dynamics of EIDI system
LI Guangchao, HE Jiang, LIN Guiping
2016, 42(10): 2069-2074. doi: 10.13700/j.bh.1001-5965.2015.0609
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As an electromechanical de-icing system, electro-impulse de-icing (EIDI) technology has broad application prospect. In the present paper, structural dynamics characteristics of a simplified EIDI system consisting of coil and metal plate were numerically and experimentally studied. A finite element s...
Qualitative analysis of a food chain model with alternative prey
LI Ya, HU Hanyan, LIN Junyi
2016, 42(10): 2075-2081. doi: 10.13700/j.bh.1001-5965.2015.0642
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Studies in ecology show that alternative prey has important effects on predator-prey system in the aspects of system stability, species persistence, etc. For species at the intermediate level of a food chain, they are prey of top predators, while predating the bottom prey at the same time. Therefore...
Multiple maneuvering targets tracking with unknown clutter density using PHD
YUAN Changshun, WANG Jun, ZHANG Yaotian, BI Yanxian, XIANG Hong
2016, 42(10): 2082-2090. doi: 10.13700/j.bh.1001-5965.2015.0623
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The jump Markov system (JMS) based on the random finite set (RFS) is an effective approach for multiple maneuvering targets tracking. However, these approaches assume that the clutter density is known and priori. This is unrealistic for real applications, as it is often previously unknown and its va...
Structure design and performance analysis of a new buffering leg
ZHANG Ziqiang, CHEN Diansheng, CHEN Kewei
2016, 42(10): 2091-2098. doi: 10.13700/j.bh.1001-5965.2015.0626
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The leg structure is an important component to achieve good buffering performance for bionic locust jumping robot, so the structure design and analysis of the leg has important significance. In order to achieve the better landing buffering performance, a new buffering leg is designed based on the ph...
Fault diagnosis of particle filter nonlinear systems based on adaptive threshold
JIANG Dongnian, LI Wei
2016, 42(10): 2099-2106. doi: 10.13700/j.bh.1001-5965.2015.0611
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In view of the problem of actual nonlinear system that the traditional method is difficult to obtain reliable fault diagnosis, this paper uses the particle filter method and applies the logarithm likelihood function as evaluation index to study the nonlinear non-Gaussian system fault detection and f...
Simulation and experiment of event-triggered control for inverted pendulum system
YU Hao, OUYANG Li, HAO Fei
2016, 42(10): 2107-2117. doi: 10.13700/j.bh.1001-5965.2015.0631
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This paper investigates the event-triggered control for single linear inverted pendulum system from theoretical, simulation and experimental points of view to illustrate the feasibility and practicability of event-triggered control. Firstly, the parameter in event condition was designed based on lin...
Research for ground-based astrodynamical experiment for spacecraft relative motion
QI Yu, SUN Jun, SHI Peng, ZHAO Yushan
2016, 42(10): 2118-2129. doi: 10.13700/j.bh.1001-5965.2015.0637
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This paper proposes a method to build the spacecraft relative motion's ground-based astrodynamical experiment and figures out an approach to prove the reliability of ground-based experimental results. First, the spacecraft relative motion's ground-based astrodynamical experiment is carried out with ...
Cooperative path planning with reconnaissance duration time constraints
ZHU Qian, ZHOU Rui
2016, 42(10): 2130-2138. doi: 10.13700/j.bh.1001-5965.2015.0613
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When performing reconnaissance tasks, unmanned aerial vehicles (UAVs) keep reconnoitering the targets during different reconnaissance time for acquiring effective target information. It is assumed that UAVs fly in a straight line, which is suitable for better reconnaissance results during reconnaiss...
Production plan and integrated dispatch optimization of aircraft digital assembly
ZHAO Limin
2016, 42(10): 2139-2145. doi: 10.13700/j.bh.1001-5965.2015.0632
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The aircraft assembly is a long-time complex procedure with multiple steps. In consideration of quality and efficiency demands of aircrafts, it is necessary to reasonably plan the steps and schedule resources, such as devices and workers, in assembly process. Production planning and resource schedul...
Tracking approach based on online multiple instance learning with weight distribution and multiple feature representation
YANG Honghong, QU Shiru, MI Xiuxiu
2016, 42(10): 2146-2154. doi: 10.13700/j.bh.1001-5965.2015.0644
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When most existing tracking algorithms are used, target drift problem is easy to occur under a complex environment such as occlusion, pose and illumination change. This paper proposes an online visual target tracking algorithm based on the framework of multiple instance learning (MIL) tracking. The ...
Formation control-based adaptive update algorithm of HELLO message
HUANG Shaocheng, MA Linhua, RU Le, CAI Zhao, ZHANG Song, HU Xing
2016, 42(10): 2155-2161. doi: 10.13700/j.bh.1001-5965.2015.0645
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In the unmanned aerial vehicles (UAVs) formation ad hoc network, in order to solve the instability of formation control problem and reduce the large control overhead, both of which are caused by unreasonable update cycle of the position information, a formation control-based adaptive update algorith...
Predicting filling mass of nitrogen in fire agent bottle based on Peng-Robinson equation of state with Wong-Sandler mixing rule
CHEN Mengdong, XIE Yongqi, GUO Xiangxiang, YU Jianzu, MA Wei
2016, 42(10): 2162-2168. doi: 10.13700/j.bh.1001-5965.2015.0661
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Nitrogen supplies driving force for the rapid discharge of fire agent in the fire extinguisher of the helicopter. Calculating the filling nitrogen and its mole fraction is one of the key issues to be solved in the design of fire extinguishing system of the engine nacelle in helicopter. Based on Peng...
Effects of debond size on compressional behavior of single-stiffened composite panels
JI Zhaojie, GUAN Zhidong, LI Zengshan, XUE Bin
2016, 42(10): 2169-2179. doi: 10.13700/j.bh.1001-5965.2015.0603
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In order to research the effects of debond size on buckling and post-buckling behavior of single-stiffened composite panel under axial compression, four types of I-section stringer-stiffened composite panels containing different debond defects were investigated by test and numerical simulation. Stra...
Effect of forebody strake control technology on static directional stability
WEN Jing, WANG Yankui, DENG Xueying
2016, 42(10): 2180-2188. doi: 10.13700/j.bh.1001-5965.2015.0746
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When static directional stability of an aircraft is unstable, the typical effectiveness of the vertical tail and rudder to the yawing moment falls off because the vertical tail gradually becomes enveloped in the wake of wing and fuselage. Meanwhile, the forebody remains in the undisturbed flow field...
Joint optimization of maintenance time and carrying spare parts for k-out-of-N system
ZHANG Yongqiang, XU Zongchang, HU Kaikai, HU Chunyang
2016, 42(10): 2189-2197. doi: 10.13700/j.bh.1001-5965.2015.0622
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Maintenance support of repairable warship k-out-of-N system during a task was researched. A method of how to trade off maintenance frequency, carrying spare parts and repair capacity was given. Taking the three parameters as decision variables and combined with the using and maintenance processes of...
Differential planetary gears based underactuated arm for capturing moving target
WANG Qingchuan, QUAN Qiquan, DENG Zongquan, HOU Xuyan
2016, 42(10): 2198-2205. doi: 10.13700/j.bh.1001-5965.2015.0660
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A novel underactuated robotic arm was proposed for moving target capturing, which has the capability of collision energy absorption. The proposed underactuated three-degree-of-freedom robotic arm has base joint, median joint and distal joint, and three joints are driven by two actuators. The base jo...
Dynamic meshing characteristics analysis of spur gears based on LS-DYNA
LIU Yanxue, WANG Jianjun, ZHANG Tao
2016, 42(10): 2206-2213. doi: 10.13700/j.bh.1001-5965.2015.0607
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Based on contact finite element analysis theory and explicit calculation method, the dynamic meshing process of gears could been simulated with high-fidelity by using LS-DYNA software. The precise finite element analysis model of a meshed gear in one experiment is built, its dynamic meshing process ...
Damage identification method for functionally graded Timoshenko beams
DENG Hao, CHENG Wei
2016, 42(10): 2214-2221. doi: 10.13700/j.bh.1001-5965.2015.0618
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To acquire high precision damage identification method for functionally graded materials, based on the state space variable replacement, the transfer matrix of the functionally graded Timoshenko beam along the axial exponential distribution is obtained. By analyzing the influence of crack on the loc...
Mathematical simulation and assessment of airworthiness compliance of climb gradient during takeoff of civil aircraft
MENG Xiangguang, WANG Lixin, LIU Hailiang
2016, 42(10): 2222-2230. doi: 10.13700/j.bh.1001-5965.2015.0617
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The climb gradient along the takeoff path reflects the civil aircraft's ability of flying over the ground obstacles to reach the safe height. According to the requirements of airworthiness regulations for takeoff procedure and climb performance, an airworthiness compliance assessment method of climb...
Solution of output feedback μ controller based on LMI
LI Zhe, GAO Yuanlou, LI Peilin
2016, 42(10): 2231-2237. doi: 10.13700/j.bh.1001-5965.2015.0556
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D-K iteration is the main implementation method of structured singular value (μ), which has problems of strict solution conditions and poor system suitability. Aimed at overcoming limitation shortage of D-K iteration application, the linear matrix inequality (LMI) was proposed to improve D-K iterati...
Phenomenological study of double-beta decay half-lives
XIAO Yang, GENG Lisheng
2016, 42(10): 2238-2242. doi: 10.13700/j.bh.1001-5965.2015.0604
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In order to study the physical interpretation of a phenomenological formula which can well describe the available experimental data and connects double-beta decay half-lives and decay energy, a convincible explanation for the source of the inverse relationship between the logarithm of the double-bet...
Effect of chloride ion and temperature on corrosion of aluminum alloy in coolant
CHEN Xin, TIAN Wenming, LI Songmei, GAO Shulun, LIU Jianhua
2016, 42(10): 2243-2249. doi: 10.13700/j.bh.1001-5965.2015.0627
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The effect of chloride concentration and temperature on the corrosion of aluminum alloy in the stimulated coolant was studied by potentiodynamic polarization and electrochemical impedance spectra. The surface characterization of aluminum alloy after polarization was featured by metallurgical microsc...
Feature extraction of precession targets based on wideband and narrowband micro-Doppler information
ZHAO Shuang, LU Weihong, FENG Cunqian, HE Sisan, LI Jingqing
2016, 42(10): 2250-2257. doi: 10.13700/j.bh.1001-5965.2015.0649
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Micro-motion feature is one of the crucial features used for ballistic target recognition. Aimed at the model of cone-shaped target, a novel algorithm based on hybrid-scheme radar network combining wideband radar with narrowband radar is proposed to extract the micro-motion parameters. First, on the...
Short-frame prior scheduling with weighted round robin transmission strategy in AFDX terminal system
YANG Jingzhong, GE Hongjuan, WU Shuang, XU Yuanyuan
2016, 42(10): 2258-2264. doi: 10.13700/j.bh.1001-5965.2015.0664
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A new scheduling strategy of terminal system virtual link (VL) is put forward, which is based on the short-frame prior scheduling and integrated with weighted round robin (WRR).The new approach ensures the priority of the important short-frame and balances the delay upper bound of other different pr...
Precise measurement of PN code phase by accumulative least square method
ZHANG Bo, GUO Ying, QI Zisen, ZHANG Dongwei, ZHANG Kunfeng
2016, 42(10): 2265-2270. doi: 10.13700/j.bh.1001-5965.2015.0620
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As least square (LS) method, which is applied to precise measurement of PN sequence phase in high-accuracy, is limited in narrow range condition of coarse synchronization, it is difficult to satisfy the needs of practical project. A novel realized structure of accumulative LS method for PN sequence ...

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