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2016 Vol. 42, No. 8

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Volume 42 Issue82016
2016 Year 42 Volume 8 Issue E-journal
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Experimental research on vibration control of composite plate with piezoelectric networks
LI Lin, SONG Zhiqiang, YIN Shunhua, LI Chao
2016, 42(8): 1557-1565. doi: 10.13700/j.bh.1001-5965.2015.0514
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Abstract:
The paper mainly studies the vibration control of the plate with piezoelectric network. After giving the dynamic equations of the plate with piezoelectric network based on the homogeneous assumption, we resolved the problem that the necessary inductance in the network is too large to be realized in ...
Adaptive terminal sliding mode guidance law with impact angle constraint
YANG Suochang, ZHANG Kuanqiao, CHEN Peng
2016, 42(8): 1566-1574. doi: 10.13700/j.bh.1001-5965.2015.0502
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Abstract:
Aimed at the requirement of zero miss-distance and terminal impact angle constraint for some missiles attacking the targets, an adaptive nonsingular terminal sliding mode control algorithm based on the theories of terminal sliding mode control and finite-time control is proposed first. The algorithm...
Technology for power processing unit used in high power electric propulsion
LI Feng, KANG Qing, XING Jie, LI Yalin
2016, 42(8): 1575-1583. doi: 10.13700/j.bh.1001-5965.2015.0531
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Abstract:
Higher requirements are proposed to propulsion for space technology in new environment. As an advanced propulsion technology, electric propulsion has the virtue of high specific impulse, low launching mass and low cost. High voltage power supply is the key technology for high power and high efficien...
An accurate modeling method for random drift of MEMS gyro
WANG Kedong, WU Yuxia
2016, 42(8): 1584-1592. doi: 10.13700/j.bh.1001-5965.2015.0510
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To compensate random drift in MEMS gyros, an auto-regressive moving average (ARMA) model for measured data drift was developed using time series analysis, and a new estimation method was proposed for moving-average (MA) models. The gyro noise was modeled as an ARMA with the observation noise. After ...
Assessing network security situation quantitatively based on information fusion
WEN Zhicheng, CHEN Zhigang, TANG Jun
2016, 42(8): 1593-1602. doi: 10.13700/j.bh.1001-5965.2015.0561
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Concerning the problem that current network security situation assessment has the characteristics of single information source, limited assessment scope, not easy to build model, high time and space complexity and not high credibility, a new method of network security situation assessment is propose...
Information-theoretic ensemble clustering on web texts
WANG Yang, YUAN Kun, LIU Hongfu, WU Junjie, BAO Xiuguo
2016, 42(8): 1603-1611. doi: 10.13700/j.bh.1001-5965.2015.0507
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Although being extensively studied, text clustering remains a critical challenge in data mining community due to the curse of dimensionality. Various techniques have been proposed to overcome this difficulty, but the negative impact of weakly related or even noisy features is yet the hunting nightma...
Comparative analysis on primary parameters of loitering munitions of different propulsion systems
HAO Feng, CHANG Min, TANG Shuo
2016, 42(8): 1612-1618. doi: 10.13700/j.bh.1001-5965.2015.0490
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As to loitering munitions, the propulsion system significantly influences design missions of flight endurance, cruising velocity, range and the mass of payloads. Based on the constraint of energy balance, the estimation formulation of loitering munitions of three types of propulsion systems is estab...
3D obstacle avoidance method and simulation for unmanned helicopter
MENG Zhijun, PING Xueshou, CHEN Xuzhi
2016, 42(8): 1619-1626. doi: 10.13700/j.bh.1001-5965.2015.0499
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Abstract:
Autonomous obstacle avoidance is an indispensable ability for unmanned helicopter (UH) operating low-altitude flight. A new 3D real-time avoidance method was presented to solve UH obstacle avoidance problem in complicated environment. The vision space of sensor was divided into several unequal radii...
Synthesis and electrochemical performance of lithium-rich cathode material
WEI Xin, ZHANG Shichao, LIU Guanrao, YANG Puheng, MENG Juan, LI Honglei
2016, 42(8): 1627-1631. doi: 10.13700/j.bh.1001-5965.2015.0505
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Abstract:

Lithium-rich cathode material Li1.2Mn0.54Ni0.13Co0.13O2 has been synthesized by sol-gel method followed by a high-temperature calcination process at 800℃ and 900℃ (signed as S8 and S9, respectively). The structure, morphology and electrochemical properties of as-synthesized materials are characteriz...
Combustion performance and range of coal-based Fischer-Tropsch aviation fuel
ZHOU Guanyu, WANG Hongbo, WANG Zhichao, YANG Xiaoyi
2016, 42(8): 1632-1638. doi: 10.13700/j.bh.1001-5965.2015.0527
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Abstract:
Aviation alternative fuels play an important role in energy security and environmental protection. Coal-based Fischer-Tropsch synthetic fuel was chosen to experimentally study its basic combustion performance and evaluate the influence of flight range compared to theretical study. A B737-800 with tw...
Impact of channel curvature on microgravity membrane gas-liquid separation performance
ZHANG Wenwei, KE Peng
2016, 42(8): 1639-1648. doi: 10.13700/j.bh.1001-5965.2015.0533
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The simulation research on the performance of microgravity membrane gas-liquid separation is of great significance for the design and optimization of gas-liquid separation technology. The Eulerian two-fluid model with an interface probability approximation method is introduced for the computability ...
Free-chattering fractional order sliding mode control of integrated electro-hydraulic servo pump
YANG Rongrong, FU Yongling, WANG Yan, WANG Deyi, GUO Jianwen, ZHANG Ling
2016, 42(8): 1649-1658. doi: 10.13700/j.bh.1001-5965.2015.0495
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Abstract:
Thanks to the special structure with the same rotor and housing shared by higher degree integrated servo motor and pump, integrated electro-hydraulic servo pump (IEHSP) has significant advantages in aspects of size, noise, efficiency, etc., and it has good application prospect. To improve IEHSP's sp...
Rendering algorithm with color coherence for dynamic electromagnetic environment
FENG Xiaomeng, WU Lingda, YU Ronghuan
2016, 42(8): 1659-1666. doi: 10.13700/j.bh.1001-5965.2015.0503
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Abstract:
After studying the existing state of the art, we firstly propose an rendering algorithm with color coherence for dynamic electromagnetic environment. The definition of color coherence for rendering is that the same value in different data frames corresponds to the same color and the change of colors...
Method of time-to-go estimation based on predicted crack point
LI Yuan, ZHAO Jiguang, BAI Guoyu, YAN Liang
2016, 42(8): 1667-1674. doi: 10.13700/j.bh.1001-5965.2015.0509
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Abstract:
Aimed at the different characters of the head-pursuit and head-on interception flight trajectory, the time-to-go (TGO) estimation methods are designed. According to the prediction of the crack point for the interceptor and target, the influence of different launch conditions on the precision of TGO ...
Condition prediction of liquid propellant rocket engine based on process neural networks
NIE Yao, CHENG Yuqiang, WU Jianjun
2016, 42(8): 1675-1681. doi: 10.13700/j.bh.1001-5965.2105.0521
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Aimed at the problem of liquid propellant rocket engine condition prediction, a double parallel feedforward discrete process neural network (DPFDPNN) model based on extreme learning (EL) algorithm is proposed. The discrete process neural network (DPNN), which was trained via off-line data, is firstl...
Symplectic weighted discontinuous Galerkin method with minimal phase-lag
ZHU Shuai, ZHOU Gang, LIU Xiaomei, WENG Shilie
2016, 42(8): 1682-1690. doi: 10.13700/j.bh.1001-5965.2015.0523
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Symplectic finite difference method (FDM) can keep the symplectic structure, and finite element method (FEM) can keep the symplectic structure as well as energy conservation for linear Hamiltonian systems. However, symplectic FDM and FEM still have phase errors for the numerical solution, so, the co...
Tube numerical controlled bending quality prediction based on machine learning
GE Yulong, LI Xiaoxing, LANG Lihui, CHENG Pengzhi
2016, 42(8): 1691-1697. doi: 10.13700/j.bh.1001-5965.2015.0493
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Wrinkle and over thinning, as well as inevitable spring-back, may occur along with the tube numerical controlled (NC) bending process, which have strong impacts on forming quality. As the bending processing is a complex non-linear system, it is hard to compute the result theoretically. Besides, fini...
Highly maneuvering hypervelocity-target tracking algorithm based on ST-SRCKF
FANG Jun, DAI Shaowu, XU Wenming, ZOU Jie, Wang Yongting
2016, 42(8): 1698-1708. doi: 10.13700/j.bh.1001-5965.2015.0494
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The movement model of highly maneuvering hypervelocity-target is difficult to construct accurately, and the existence of bad measurements in tracking process may lead to filtering divergence. In order to deal with these problems, a tracking algorithm applicable to highly maneuvering hypervelocity-ta...
Dynamic modeling and simulation analysis of robot driver's mechanical legs
LIU Kunming, XU Guoyan, YU Guizhen
2016, 42(8): 1709-1714. doi: 10.13700/j.bh.1001-5965.2015.0519
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In order to improve the design efficiency of the robot driver, the dynamic analysis and modeling of the robot's mechanical legs are carried out, and furthermore, a collaborative simulation platform of the robot and vehicle is built. The mechanical leg dynamic model is made up of mechanical structure...
Angular momentum management of space station based on pole placement
DANG Qingqing, JIN Lei, XU Shijie
2016, 42(8): 1715-1723. doi: 10.13700/j.bh.1001-5965.2015.0535
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For the problem that gravity-gradient torque and other disturbance torques can cause the accumulation of control momentum gyros (CMG) angular momentum when space station operates in inertial frame. Gravity-gradient torque is used for torque equilibrium attitude. An angular momentum management contro...
Correlation loss caused by GNSS receiver front-end processing for strong signals
PAN Hongchen, KOU Yanhong
2016, 42(8): 1724-1730. doi: 10.13700/j.bh.1001-5965.2015.0518
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In the applications of global navigation satellite system (GNSS) signal quality monitoring and GNSS radio frequency (RF) signal simulator test, the power of the desired GNSS signal usually goes much higher above the noise floor. This paper investigates the correlation power loss of binary phase shif...
Fuzzy time-variant reliability analysis of mechanical structure based on generalized degradation
SUN Xuan, ZHANG Jianguo, WANG Pidong, PENG Wensheng
2016, 42(8): 1731-1738. doi: 10.13700/j.bh.1001-5965.2015.0528
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The character that the specimen number of on-orbit mechanical products in space is small leads to the fuzziness of relative parameters and the dynamic degraded failure criterion. The existing fuzzy reliability model mainly aims at static problems, which cannot describe the time-variant and fuzzy pro...
Simulation test platform of electrostatic damage based on three-dimensional field-and-road coordinated method
ZHANG Xin, BAI Chaoping
2016, 42(8): 1739-1746. doi: 10.13700/j.bh.1001-5965.2015.0529
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The electrostatic discharge has been taken as one of the main reasons for failures of electronic equipments, so electronic products are always tested to examine the antistatic ability in the process of development. However, the test is limited by high cost of expense, poor repeatability and damage o...
Influence of inconsistence of GNSS anti-jamming antenna array on MUSIC algorithm
YU Lihong, QIN Honglei, LI Wutao, LANG Rongling
2016, 42(8): 1747-1754. doi: 10.13700/j.bh.1001-5965.2015.0497
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Suffering from the errors of antenna array elements such as radio frequency (RF) amplifier and analog to digital converter (ADC), global navigation satellite system (GNSS) anti-jamming antenna array has channel inconsistence inevitably. Firstly, the influences of the amplitude and phase inconsistenc...
Radiator threat evaluating method based on rough set and information entropy
FAN Xiangyu, WANG Hongwei, SUO Zhongying, CHEN You, YANG Yuanzhi
2016, 42(8): 1755-1761. doi: 10.13700/j.bh.1001-5965.2015.0663
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In order to meet the need of threat ranking arithmetic of air radar emitter in complex electronic environment, the rough set theory is introduced into radar radiator threat evaluation. A self-contained data processing model for computing threat metric values is established to realize the quantitativ...
Object contour extraction based on image feature analysis
WANG Tian, ZOU Zilong, QIAO Meina
2016, 42(8): 1762-1768. doi: 10.13700/j.bh.1001-5965.2015.0491
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Contour analysis and extraction is the fundamental problem in computer vision, and the research about it plays an important part in complex scene analysis and comprehension. In this paper, an algorithm for analyzing indoor scene images is studied. Based on the image features extracted from the image...
Simulation and analysis of active cancellation stealth based on LFM wave
BIAN Xiaochen, HUANG Peilin, JI Jinzu
2016, 42(8): 1769-1776. doi: 10.13700/j.bh.1001-5965.2015.0492
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Active cancellation stealth technology is gaining increasing attention due to its wide applicability, flexibility and its effect which has nothing to do with the shape of the target. A kind of active cancellation system based on linear frequency modulated (LFM) wave was proposed for its technical re...
Dynamic surface control for quadrotor unmanned air vehicle
FANG Xu, LIU Jinkun
2016, 42(8): 1777-1784. doi: 10.13700/j.bh.1001-5965.2015.0498
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A dynamic surface control method is proposed to control position and attitude of quadrotor unmanned air vehicle (UAV) against its characteristics of underactuation. Considering that velocity and angular velocity are hard to measure, we design a high-gain observer for UAV to estimate velocity and ang...

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